Compare the app, not just the brand
A VPN comparison becomes misleading when a tick beside a brand is treated as a promise about every device. The relevant question is narrower: does this feature work in the version of the app you will install, on your operating system, under the plan you are considering?
Make a feature table with one column per device and one row per essential requirement. Include the operating-system version where relevant. Put a link to the provider's setup instructions beside each confirmed feature. If support documentation only describes Windows, do not copy that answer into the iPhone column.
Kill switch: what happens when the tunnel fails
A kill switch is intended to stop traffic from falling back to an ordinary connection after the VPN connection is interrupted. ExpressVPN's explanation distinguishes that blocking behavior from reconnection. Reconnection restores the tunnel; blocking addresses what may happen before restoration.
When evaluating a provider, find out whether the feature is enabled by default, whether manual disconnection behaves differently, and whether an always-on mode exists. These are questions to answer from that app's documentation. Do not assume that a switch with the same name behaves identically across different services.
During a normal trial, note what happens after waking the laptop or switching networks. If the behavior is unclear, ask support to explain it rather than treating a connected icon as a complete security test.
Split tunneling: choose what uses the VPN
Split tunneling provides a way to route selected traffic differently. For example, Surfshark describes its Bypasser as excluding selected apps or websites from the tunnel. This can be useful when one service needs your ordinary connection while other traffic uses the VPN.
The tradeoff is explicit: excluded traffic does not receive the tunnel's protection. Surfshark's Bypasser instructions illustrate a real platform difference: the iOS instructions describe website exclusions, while the Windows instructions include applications and websites. Verify the controls you need rather than treating “split tunneling” as one identical feature. Keep exceptions small and remove them when they are no longer necessary.
Protocol: the connection method
A protocol defines how the VPN connection is established and carries traffic. WireGuard is a cross-platform protocol designed around a compact implementation and modern cryptography. A provider's use of it is a specification, not proof of that provider's overall privacy practices or speed on your network.
Start with the app's recommended connection mode unless you have a clear reason to change it. If troubleshooting requires a different mode, record the setting and compare the same task again. Avoid buying a subscription because one protocol name appears fashionable while ignoring compatibility with your actual devices.
Location coverage: check the place you need
A long country list is less useful than confirmation of the particular region you will use. Distinguish an advertised location from a performance result: coverage says that a connection is offered, while a useful performance comparison requires an actual route and workload.
Our suggested comparison has three entries: your everyday location, a second location you would use regularly, and a fallback. Ask the provider to clarify whether a location is virtual or physically hosted there if that distinction matters to your decision. Do not infer it from the country flag in an app.
Device allowances and optional extras
Count simultaneous connections separately from available apps. Surfshark advertises unlimited simultaneous connections, while Mullvad's pricing page specifies an account allowance. Neither statement answers whether the exact app and feature combination you need is available on your television, router or phone.
Keep optional extras in a separate part of your comparison. A password manager, filtering feature or other bundled service may be useful, but assign it value only if you intend to use it. Compare like-for-like VPN tiers first, then decide whether the bundle replaces another purchase.
A simple scoring method
Label each requirement essential, useful or irrelevant. Reject candidates that cannot satisfy an essential requirement, rather than letting a large collection of optional ticks cancel out the omission. Among the remaining candidates, compare usability and the full subscription cost.
This approach makes the decision easy to revisit. If your devices or priorities change, update the requirement rather than repeating the entire search. Our buying checklist turns the feature comparison into an evaluation you can complete before a long subscription.
