Policy
Nothing leaves
your device.
Last updated · 2026-05-03
Nerfify is built around a simple promise: nothing leaves your device.
Data we collect
None. Nerfify does not collect, store, transmit, or sell any personal or device data.
There are no analytics, no crash reporters, no advertising IDs, no user accounts, and no telemetry. There is no Nerfify server — there is nothing for your device to talk to.
How the VPN permission is used
Android requires apps that intercept network traffic to use the
system VPN service (BIND_VPN_SERVICE). Nerfify uses
this permission only to run a local DNS filter on
your own device. Specifically:
- Nerfify acts as the DNS resolver for your device while it is running.
-
For most domains, it forwards your queries to a public resolver
(Cloudflare's
1.1.1.1and Google's8.8.8.8) exactly as your phone would normally. - For a small list of Spotify video-CDN domains, it returns "no such address," which causes the Spotify app to fall back to audio-only playback.
- DNS queries are processed on your device. Nerfify does not log them, store them, or send them anywhere other than the public resolver they would have gone to anyway.
Nerfify does not route the rest of your traffic through any server. It is not a privacy VPN, a proxy, or a tunnel to a third party. It is a local filter that happens to use Android's VPN plumbing.
Permissions Nerfify requests
| Permission | Why |
|---|---|
| BIND_VPN_SERVICE | Required by Android to run the local DNS filter described above. |
| INTERNET | Forward non-blocked DNS queries to public resolvers. |
| FOREGROUND_SERVICE / FOREGROUND_SERVICE_SPECIAL_USE | Keep the filter running while you listen to Spotify. |
| POST_NOTIFICATIONS | Show the persistent "Music-only mode is on" notification while the filter is active. |
Children
Nerfify is not directed at children and does not knowingly process any data from anyone. Since no data is collected, there is nothing children-specific to disclose.
Changes
If this policy ever changes, the new version will be published at the same URL with an updated date at the top.
Contact
Questions: open an issue at codeberg.org/whirlwin/nerfify-site/issues.
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