Every free VPN is paid for in one of three ways: by selling what it learns about you, by using the free tier to sell you a paid one, or by showing you ads. NetCloak is paid for by ads, specifically rewarded video ads you watch to extend a timed session. What follows is what that means in practice, what the ad company can and cannot see, and what it costs you in minutes, speed and choice.
The three ways, and what each means for you
- Selling data or traffic. The VPN logs what you do, or rents out your connection as an exit for other people's traffic, and sells the result. You pay with the very thing you installed a VPN to protect. This is the model the warnings about free VPNs are really about.
- Upselling a paid tier. The free version is deliberately limited, by data cap, by speed, by server choice, so that the paid version looks better. Honest, and common, and it means the free tier is designed to disappoint you eventually.
- Ads. An advertising network pays the operator to show you ads, and the service is the same for everyone. You pay in attention. What the ad network learns about you depends entirely on what the app hands it, which is the part worth reading closely.
What the warnings get right, and what they leave out
The pages that rank for "are free VPNs safe" say, roughly, that ads mean data sharing. Proton's piece lists targeting you with ads first among the ways free VPNs make money; Norton's cites a study of free Android VPN apps as the reason to be careful. They are right that an ad-funded app hands something to an ad company. They leave out what, and that is the whole difference.
NetCloak uses Google AdMob. When an ad is requested, AdMob receives the device's advertising ID, which Android lets you reset or delete at any time, along with the ordinary facts any app request carries, such as the device model and your public address at that moment. What AdMob does not receive is anything from inside the VPN tunnel. The ad library runs beside the tunnel, not in it; it has no view of the sites you visit through NetCloak, and neither do we, because the traffic is encrypted end to end between your phone and the server. An ad company that gets your advertising ID is an ordinary ad-funded app. An ad company that gets your browsing would be the first model above wearing the third's clothes, and it is not what happens here.
Time, not data: why the unit matters
Most free VPNs meter data: two gigabytes a month, ten, whatever the tier allows. You cannot see a data cap coming. A page loads, a video buffers, and somewhere a counter you never look at runs out. NetCloak meters time instead. You pick a mode before you connect, and the app shows a clock:
Standard speed for the longest stretch.
Twice the speed. The default.
Four times the speed for a quick job.
A clock is honest in a way a cap is not. You know what forty minutes is. You can plan around it, and when it runs low the app warns you at fifteen percent and again at five. Watching a rewarded video adds another block of your mode's length, up to a ceiling of three hours remaining, and if the ceiling means an extension adds less than a full block, or nothing, the app says so instead of playing the ad and shrugging. How often an ad is required is a setting we control remotely, and it can be zero; there have been stretches where no ad was required at all.
What it costs you
- Minutes. A rewarded video is short, but it is your attention, and you will watch one every time you extend.
- One server. Ads pay for one server, in New York. If you are far from it, your traffic travels far. There is no region picker because there is nothing to pick.
- Speed on the longest mode. Marathon buys eighty minutes by running at the base speed. Sprint runs at four times that and lasts twenty. That is the trade, stated on the tile before you choose it.
What it does not cost you
- An account. There is none. No email, no password, nothing to leak.
- Your browsing. Not logged, not readable, not sold.
- A surprise. The clock is on the screen the whole time.
What Google Play requires of a VPN, in plain words
Google's policy for VPN apps requires an app that uses Android's VpnService to say so in its listing, to encrypt traffic from the device to the tunnel endpoint, and never to make money by redirecting or manipulating other apps' traffic. NetCloak does the first two and does not do the third. The ads are ads on a screen, not something done to your traffic.
Can I trust a free VPN?
Trust the one that tells you what it keeps, for how long, and who else is paid, and then check that the app matches the words. Distrust any free VPN, this one included, that answers with adjectives instead.
Is there a 100% free VPN?
Yes, in the sense that NetCloak never asks for money and has no paid tier. It is paid for by ads, and the limit is a clock you can see, not a cap you cannot.
What we keep
We do not log the sites you visit, your DNS queries, or anything else inside the tunnel. We cannot read it. We keep a small record while a session is running, deleted when the session ends. Operational logs that include your IP address are kept for no more than two days, then deleted. A VPN is not invisibility: it changes where your traffic joins the public internet, not what you do once it gets there.
The field-by-field version is on the transparency page, and the session mechanics, including every reason a session can end early, are on how it works.