Table of Contents
Apple built iPhones with user privacy in mind, but that doesn't mean your iPhone is immune to threats. Robust security features baked in mean that you're protected against attacks that try to hitch a ride on incoming data or through malicious apps. But these protections won’t secure the outgoing information you put on the internet. A VPN helps fill these gaps by making it harder for outside entities to monitor your mobile connection. I evaluate VPNs and test them extensively so that I can tell you which ones are best for almost any platform, including the iPhone. Currently, Proton VPN is our Editors' Choice winner thanks to its free and reliable service, but it isn't the only service I recommend. Read on for all of the best iPhone VPNs I have tested, followed by the factors you should consider when choosing one for yourself.
Our Top Tested Picks
Proton VPN
Bottom Line
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
Proton VPN provides unmatched privacy, value, and features—with the industry's best free plan and an exceptional premium experience—making it the top VPN service we recommend.
Pros
- Best free plan we've seen
- Industry-leading privacy standards
- Global server network
- Slick, accessible client
- Numerous additional privacy tools
- Ample customer support options
Cons
- High latency scores in testing
NordVPN
Bottom Line
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
NordVPN offers a comprehensive suite of privacy and security features that extend far beyond traditional VPN protection, including advanced encryption, threat detection, and more.
Pros
- Support for multi-hop, split tunneling, and Tor connections
- Excellent speed results
- Global server coverage
- Wealth of available features and add-ons
- Built-in antivirus tools
Cons
- Expensive, and annual pricing could be clearer
- Antivirus component could be better
ExpressVPN
Bottom Line
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
ExpressVPN's dedication to privacy is impressive, as is its far-flung fleet of servers, though its price is steep for those who don't need worldwide access.
Pros
- Large, diverse, widely distributed fleet of servers
- Fast speed test results
- Strong privacy and security practices
- Support for post-quantum encryption protocols
Cons
- Expensive monthly and annual plans
- No multi-hop connections
- Ad blocking is spotty
- Ownership with a sketchy past
Surfshark VPN
Bottom Line
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
Surfshark is a top-tier VPN with unlimited device connections, compelling server performance, and a rock-solid privacy policy.
Pros
- Excellent server coverage and performance
- Impressive suite of security features
- Well-defined privacy policy
- Quarterly transparency reports
- Affordable long-term plans
Cons
- High monthly cost
- Average server network size
Windscribe VPN
Bottom Line
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
From its deep set of features to its class-leading transparency, Windscribe offers an excellent, refreshingly clear-cut VPN experience.
Pros
- Industry-leading company transparency and communication
- Large number of payment options
- Best free plan of any VPN we've tested
- Anonymous signup allowed
- Unlimited number of simultaneous connections and devices
- Helpful AI support bot
Cons
- Short refund window
Hide.me VPN
Bottom Line
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
Hide.me VPN offers truly unlimited free trials, great performance, and tons of security options to protect your data. Even better, its pricing plans are simple, easy to understand, and affordable.
Pros
- Ten simultaneous connections
- Reliable Netflix access
- Privacy-first policies
- Affordable
- Full-featured free plan
Cons
- Average server numbers
Our experts have tested this product and selected it for this story. Its inclusion and description here solely reflect findings from our independent review. The company has paid for highlighted placement on this page.
ProtonVPN
The Best VPN Deals This Week*
- Surfshark VPN — $1.99 Per Month + 3 Months Free (87% Off 2 Years Starter Plan)
- NordVPN — $3.89 Per Month + $20 Amazon Gift Card (74% Off 2 Years Plus Plan)
- McAfee — Total Protection Essential for $3.33 Per Month, Includes Anti-Virus and VPN
- ExpressVPN — $2.44 Per Month + 4 Months Free (81% Off 2 Years Basic Plan)
- RELATED:
- Best VPNs
- Fastest VPNs
- Best Free VPNs
- Best Mac VPNs
EDITORS' NOTE
February 22, 2026: With this update, our lineup of recommended iPhone VPNs remains unchanged. The existing picks have been vetted for currency and availability.
- Best free plan we've seen
- Industry-leading privacy standards
- Global server network
- Slick, accessible client
- Numerous additional privacy tools
- Ample customer support options
- High latency scores in testing
ProtonVPN is our top choice for iOS. Its sleek iOS app retains most of the same features as the desktop version, with the exception of split tunneling. Additionally, the VPN and a suite of tools, including ProtonMail and ProtonPass, can be used for free with the same account. We appreciate Proton’s stance that price should never be a hurdle to privacy.
Features and capabilities: Proton provides access to a global server network that works seamlessly with iOS. The premium plans offer a wide range of excellent features, including a configurable kill switch, multi-hop connections, and support for up to 10 simultaneous connections. The free version is one of the best on the market, with five server options and unlimited bandwidth.
Privacy and security: Proton’s robust privacy standards carry forward to the iOS version of the app. The people behind the company take privacy seriously, with an unyielding commitment to transparency and accountability that is rare in the VPN space. All apps are open-source, so you never have to question if a hidden vulnerability could compromise your data. Annual audits and frequent transparency reports demonstrate that Proton consistently maintains its standards year after year.
Speed and performance: Proton’s premium servers rank in the middle of the pack in terms of performance, with a 20.11% decrease in download speeds, a 43.21% decrease in upload speeds, and a 351.26% increase in latency.
Streaming: Proton makes it easy to take your favorite shows and movies on the go. We tested Proton with Netflix in multiple regions and found that it worked flawlessly, granting us access to every catalog we tested.
User experience and ease of use: All of Proton’s apps are streamlined and easy to use, catering to both beginners and experienced users. Features are easily accessible and clearly labeled on both desktop and mobile interfaces. It’s simple to tell when you’re connected to a server, and you can access advanced options with just a couple of clicks.
Budget-conscious users: Proton’s free version is robust and packs in many features that competing free options lack. It’s an excellent tool for securing your privacy on a budget. If you can deal with the limitations, Proton’s free version is more than viable as your main VPN.
Privacy advocates: Proton’s unwavering commitment to transparency and privacy makes it one of the best options for the privacy-conscious. With open-source apps and regular audits, you can monitor precisely how the company responds to threats to user data.
- Large, diverse, widely distributed fleet of servers
- Fast speed test results
- Strong privacy and security practices
- Support for post-quantum encryption protocols
- Expensive monthly and annual plans
- No multi-hop connections
- Ad blocking is spotty
- Ownership with a sketchy past
ExpressVPN's iOS app is thoughtfully designed from top to bottom. The company has servers in 105 countries, strong speed test results, and has developed its own Lightway protocol. Express also leads the pack with its future-forward approach, incorporating post-quantum encryption that aims to prevent advanced hacking methods before they become viable. The downsides? You can't use the VPN for free, and a subscription costs a bit more than average.
Features and capabilities: ExpressVPN's iOS app retains most of the features from its desktop counterpart, aside from split tunneling. iOS users can also use the IKEv2 protocol, which is not available on Android. An ExpressVPN subscription also gives you access to Express VPN Keys, the company's password manager, and Threat Manager, a malware and tracker blocker. The service has partnered with holiday.com and provides subscribers with an eSIM ranging from 1 to 5GB, depending on the subscription length.
Privacy and security: ExpressVPN does not keep logs of customer browsing activity or connections, and the privacy policy states that the company does not sell customer data. ExpressVPN undergoes periodic independent security audits and publishes a thorough transparency report on its website, which lists customer data requests from law enforcement, along with any gag orders or national security letters. ExpressVPN also operates a bug bounty program, which provides security researchers with the opportunity to stress-test the company's systems and report vulnerabilities in exchange for a financial reward.
Speed and performance: ExpressVPN's latency and speed tests yielded results that exceeded the median. It reduced our download and upload speeds by 18.55% and 7.45%, respectively. Latency increased by 95.62%. Speeds were reliable enough for on-the-go streaming without interruptions.
Streaming: During the latest round of testing, we were able to access five regional Netflix catalogs without any restrictions. Global content is at your fingertips, with 100 servers to choose from in diverse locations, including countries with strict internet policies, such as Turkey and Vietnam.
User experience and ease of use: ExpressVPN's iOS app was our preferred way to use the VPN, thanks to its seamless and beginner-friendly design. It's always clear when you're connected to the service, so you never have to worry about accidentally leaking your location. We didn't experience any issues installing the app or connecting to servers.
Newbies: If you first heard of VPNs or, specifically, ExpressVPN via an ad read by your favorite YouTuber, you're not alone. That's probably why ExpressVPN made the app incredibly easy to navigate. People unfamiliar with VPNs will appreciate the simplicity of this app. Connecting for the first time is as simple as downloading the app, pressing the big connection button, and minimizing the window. That's it!
Location spoofers: ExpressVPN has a lot of server locations around the world, making it an excellent pick for anyone who wants to spoof their location for any reason. For example, you could use the VPN at home in Canada to route your web traffic through a London-based server. It will obfuscate your true location and give you access to region-locked content on video streaming platforms like Netflix.
- Excellent server coverage and performance
- Impressive suite of security features
- Well-defined privacy policy
- Quarterly transparency reports
- Affordable long-term plans
- High monthly cost
- Average server network size
Surfshark delivers a quality experience across all major operating systems, including iOS. The iOS app even supports split tunneling, which is often difficult for VPN to implement on the platform. While it has a high up-front monthly cost, you gain access to a wealth of handy security tools and features that help justify the lofty price.
Features and capabilities: Surfshark's network boasts adequate global coverage, with a presence in 100 countries. Advanced connection options, such as multi-hop and post-quantum encryption, make it easy to tailor your security preferences. Beyond a standard VPN, Surfshark aims to be a one-app solution for all things privacy. You can configure an antivirus, ad blocker, and additional identity protection tools all in a single hub.
Privacy and security: Privacy policies can be confusing and dense. Surfshark takes a more comprehensive approach and offers an in-depth yet digestible policy that explains how the company handles data. The service has verified these claims with frequent third-party audits and quarterly transparency reports.
Speed and performance: Surfshark's performance was impressive. We only saw a 3.25% decrease in download speeds, a 6.07% decrease in upload speeds, and an increase in latency of 83.92%.
Streaming: Netflix access was no problem for Surfshark. It accessed every regional catalog we tested without running into blocks.
User experience and ease of use: In terms of features, the user experience is consistent across applications; however, we found that the iOS version of the app was somewhat cluttered. It was still easy to use compared with the competition; however, the Android version offered a more streamlined experience.
Media streamers: Surfshark is a solid choice for those looking to watch their favorite shows from anywhere without compromising on security. The VPN was one of the fastest we have tested, and it easily unblocked regional Netflix catalogs. We did not experience stuttering or slow load times even when connected to distant locations.
Users who want a one-app solution: The biggest selling point for Surfshark is its ecosystem of privacy tools. It's a good choice for those who don't want to manage a handful of subscriptions.
Best Transparency Policy
Windscribe VPN
- Industry-leading company transparency and communication
- Large number of payment options
- Best free plan of any VPN we've tested
- Anonymous signup allowed
- Unlimited number of simultaneous connections and devices
- Helpful AI support bot
- Short refund window
Windscribe VPN boasts a stellar iOS app that is fully featured and even easier to use than its desktop counterpart. The iOS app lacks split tunneling and the VPN's firewall feature, but all other premium tools and options are available to mobile users. Windscribe also offers its service to anyone, with only the small caveat of a bandwidth restriction of up to 10GB with an email address at signup or 2GB if you choose to remain anonymous with no email account.
Features and capabilities: The full app provides unlimited simultaneous device connections, access to a large physical server network, an ad & tracker blocker called Robert, and numerous advanced configurations. With pay-per-location plans starting at just $3, Windscribe is an easy pick if you want leading-class privacy at a low price.
Privacy and security: Windscribe’s often flippant marketing and brand identity may lead one to believe it doesn’t take security seriously. That is not the case. Windscribe is one of the leading VPNs in terms of privacy, transparency, and user data protection. It doesn’t keep logs. You can pay anonymously and sign up without disclosing your personal information. Beyond airtight privacy measures, the VPN has undergone multiple audits by PacketLabs and has faced real-world challenges that have validated its privacy claims.
Speed and performance: A VPN will almost always impact your base internet speeds to some extent. We found that Windscribe had a minimal impact, resulting in a 10.66% decrease in download speeds, a 13.20% decrease in upload speeds, and a 67.01% increase in latency. These results place it among the fastest VPNs that we have tested.
Streaming: Windscribe provided open access to Netflix in the US, UK, Canada, Japan, and Australia. We didn’t encounter any issues when testing, and all streams were smooth with no noticeable buffering or stuttering. Windscribe has a network of physical servers with coverage in 69 countries and 134 cities worldwide.
User experience and ease of use: Desktop users receive a compact, streamlined window with all key features easily accessible. The mobile app is just as good, featuring a clean design that clearly indicates when you’re connected to the VPN’s network. All apps feature a comprehensive server list and advanced features, accessible through a handy drop-down menu.
Transparency seekers: Windscribe is the clear choice if you want a service that doesn’t compromise on privacy and security. Monthly transparency reports keep you informed about every inquiry the VPN has received.
Configuration enthusiasts: Not only is the base subscription affordable at just $9 per month, but you can also configure plans with select locations starting at a mere $3 per month. You won’t see that level of configuration offered anywhere else. As one of our highest-rated VPNs, you’re getting an excellent service at a price that undercuts the vast majority of the competition.
Best for Bargain Hunters
Hide.me VPN
- Ten simultaneous connections
- Reliable Netflix access
- Privacy-first policies
- Affordable
- Full-featured free plan
- Average server numbers
Hide.me is an affordable and feature-packed VPN service available on all platforms, including iOS. Its privacy-first policies and competitive price make it a compelling pick for those who value privacy but still want an affordable VPN.
Features and capabilities: Hide.me's iOS app is available directly from the App Store, and setup was easy. You get a feature-rich VPN with a kill switch, a vast server list, and configurable ad blockers. However, a couple of options are missing on iOS, including split tunneling and the SSTP protocol.
Privacy and security: Hide.me only requires your email address to make an account. With a wide range of secure and anonymous payment options, limiting what data the service has access to is simple. According to the privacy policy, the company collects your email and stores it in an encrypted form in a secure facility. Hide.me doesn't store any customer payment information or data, including your IP address, physical address, or other personal details. Additionally, the service utilizes physical servers instead of virtual machines, providing the company with better control over how user data is handled.
Speed and performance: In our most recent tests, we were impressed with Hide.me’s performance. Download speeds decreased by 5.93%, upload speeds decreased by 22.72%, and latency increased by 92.11%. These results outperform the average impact across all VPNs we tested.
Streaming: The app's website claims it works well with popular streaming services like Netflix. During testing, we accessed Netflix while connected to servers in Australia, Canada, Japan, the UK, and the US with no issues or limitations.
User experience and ease of use: Hide.me's interface can be somewhat disorganized on Windows, so we were pleased to see that the iOS version is much more streamlined. While you lose out on some of the desktop configuration options, you get a more user-friendly interface on mobile.
Budget-conscious customers: If you're on a budget, the features included in the free Hide.me client are on par with some of the paid options we've reviewed. The SmartGuard feature is particularly interesting: It is an all-in-one ad blocker, malware blocker, parental control app, and website filter.
Frequent travelers: Hide.me has servers in 57 countries, making it a suitable option for individuals who frequently travel and want to connect to a nearby, fast server. The auto-connect feature also helps mitigate the risks of connecting to public Wi-Fi in airports or hotels.
Love All Things Apple?
By clicking Sign Me Up, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy.
Thanks for signing up!
Your subscription has been confirmed. Keep an eye on your inbox!
The Best VPNs for iPhones in 2026 Compare Specs
Windscribe VPN
Hide.me VPN
Windscribe VPN
Hide.me VPN
Do You Need an iPhone VPN?
Regardless of device, advertisers can track your online habits. This data is valuable. Companies, advertisers, and even unscrupulous VPNs sell it to each other. Aggregators and data brokers take your data and use it to target users like yourself with advertisements. It’s not just a few bad apples plundering user data. It is common for companies to engage in data manipulation until they are slapped with an injunction or fine that prohibits such practices. Even then, most do not stop entirely.
Even your internet service provider (ISP) can aggregate and sell anonymized information about online activity. Social media has been built on customer data. Every algorithm you engage with uses your preferences and choices to target you. These powerful companies do not want their house of cards to come crumbling down and will fight until the end to maintain their ability to collect your information. So, it is up to you to take measures to safeguard your personal data.
You can limit some of this information exchange on the iPhone through the Ask App Not to Track feature. Just keep in mind that the feature must be manually enabled for each app you install on your device. This feature won’t stop all information from being collected either. Apps can still collect “first-party data,” including in-app purchases, account details, and app interactions.
For example, TikTok can’t use your phone's Identifier for Advertisers (IDFA) number to track your behavior. However, it can still see what you're doing on its own app. TikTok can then transmit that activity back to home base for use in third-party advertisement targeting. If you'd like to take back some of that privacy, a VPN can help.
How to Use iPhone VPNs for Encryption and Location Spoofing
When your VPN is active, all your network traffic—whether from browsers, apps, or iOS itself—gets encrypted before leaving your phone. This encrypted data is transmitted to a server owned by the VPN provider, where it's decrypted and forwarded.
Without a VPN, your IP address and location can be revealed to anyone spying on your connection or aggregating data from users in your area. Encryption makes that data unreadable on its way to the VPN’s server. After that, the decrypted data is linked to the VPN’s server, thus removing your connection to it entirely.
Since VPNs route your data to a different location, you can spoof your location and tunnel past local internet restrictions. Journalists and political activists working against repressive regimes have long relied on VPNs to communicate safely with the outside world. Please note that in some countries, using a VPN can be considered a violation of local laws. For example, Russia and China have banned most VPNs.
Spoofing your location can also circumvent regional streaming restrictions. Online streaming services often provide content in one region but not another. A VPN can provide you with access to shows that are not typically available to you. However, location spoofing may violate the platform's terms of service. Platforms like Netflix have been blocking VPNs left and right, and it's unclear whether this back-and-forth content war will ever end. This conflict means that what your VPN can access may change overnight. Even the best VPNs need time to adapt to the new blocking technologies that streaming services implement.
What an iPhone VPN Can't Do
Even when paired with an iPhone, a VPN doesn't make you invincible to online threats. I highly recommend enabling multi-factor authentication wherever possible, creating unique logins with a password manager, and creating passkeys.
Aside from apps, take the time to read the privacy policies for the services you use and adjust your privacy preferences in your mobile browser. Removing permissions does work, and that means there will be less data for apps and sites to pull from.
Consider a VPN with multi-hop connection support, such as Proton VPN. Multi-hop connections repeat that initial routing step through multiple VPN servers, making it even harder to track back to you.
A VPN won’t prevent all snooping, especially on apps that require your personal information. Form data, account information, and other manually entered details will still be trackable in an app. It’s best to use a burner email and fake details when possible. Most apps don’t actually need your real name, phone number, address, or email. You’ll just end up with spam promotional emails and texts. If it's not critical to the service's operation, then it's best to keep those details private.
Does Using a VPN Slow Your iPhone's Internet Connection?
A VPN almost always increases your internet connection latency, which can slow down your uploads and downloads. To understand the impact a VPN may have on your internet connection, I compare the results from a series of Ookla speed tests with and without the VPN active. (Note: Ookla is owned by Ziff Davis, PCMag.com's parent company. For more, see the ethics policy in our Editorial Mission Statement.)
Network speeds vary significantly depending on the time of day, network conditions, and your location, so I consider my results a snapshot for comparison rather than a definitive judgment of a service's performance. The latest data is in the chart below:
I rely on a Windows desktop and a wired connection for testing because I've found it more reliable than testing on individual mobile devices. Additionally, not all VPN providers utilize the same protocol across all platforms, which can affect performance.
Can You Trust Your iPhone VPN Service?
Trust is best lent to a VPN service, rather than being handed over entirely. VPNs change. I have seen once-great services fail to deliver over the years, and have seen once-dubious providers correct their course. I can't verify all the encryption claims providers make. Instead, I give special attention to the privacy practices of VPN companies, not just the technology they provide. I read the privacy policies during testing and then discuss company practices with VPN service representatives.
As part of my research, I also determine the company's location and the legal framework under which it operates. Some countries lack data-retention laws, making it easier for them to adhere to their no-logs policy. Knowing what personal information a VPN collects and under what circumstances a VPN provider will hand it over to law enforcement is critical. The best options won’t collect any data that could be handed over in the event of a search. If it is kept long enough to hand over to law enforcement, it is at risk of a data breach. I look for services that have clear privacy policies that outline what the service does, what information it collects, and how the company protects your data.
I also like to see policy backed up by some verifiable effort. VPN providers can demonstrate their commitment to privacy and security by undergoing third-party privacy audits to verify their claims. These audits, although imperfect, do provide some peace of mind.
Which Free VPN Is Best for Your iPhone?
Although it's possible to get a free or cheap VPN, even the best no-cost services have some limitations, such as bandwidth caps. However, data caps will likely be the least of your worries with a free service. Payment is often handled using your personal data, which is precisely what a VPN is supposed to prevent. If you must use a free service, it is best to use a free trial version of a premium, reputable VPN instead.
Proton VPN provides the only free service without data restrictions, making it the only truly free VPN on my list. However, the free tier limits your server locations to 5 random countries, and you can use the free VPN service on only 1 device at a time.