This policy covers the Wave Android app distributed on Google Play. The separate website privacy policy covers wavemp4.com in your browser.

The one-sentence version

Wave converts the videos you pick into MP4 entirely on your device, collects no personal information, shows no ads, runs no analytics, and does not have the Android internet permission - so it cannot upload your files or send data anywhere.

What the app collects

Nothing. Wave has no account system, no sign-in, and no telemetry. Specifically, the app does not collect or transmit:

  • The videos you convert, or the files it produces. Reading, converting, and saving all happen on your device. No part of a source file or a converted output leaves the phone through Wave.
  • File names, durations, formats, or other media metadata. These are read locally by the converter and stay on the device.
  • Personal or device identifiers. No advertising ID, no analytics ID, no crash-reporting SDK, no location, no contacts, no accounts.
  • Usage or diagnostics data. Wave integrates no analytics or crash-reporting service (no Firebase, no Crashlytics, no third-party SDK of that kind).

The app has no internet access

Wave does not declare the Android INTERNET permission. Without it, the app is technically incapable of opening a network connection to upload your files or report data. Conversion uses only Android's built-in, on-device media stack (MediaExtractor, MediaMuxer, and MediaCodec via Media3 Transformer). There is no server on our side that could receive your files, because the app never contacts one.

Permissions the app requests, and why

  • Notifications (POST_NOTIFICATIONS) - to show conversion progress and let you know when a conversion finishes or fails. You can decline; the app still works.
  • Foreground service, media processing (FOREGROUND_SERVICE, FOREGROUND_SERVICE_MEDIA_PROCESSING) - to keep a long conversion running reliably when the app is in the background. This is on-device processing only.
  • File selection via the system picker (Storage Access Framework) - Wave opens the videos you explicitly choose through Android's own document picker. It requests no broad storage permission: no MANAGE_EXTERNAL_STORAGE and no all-files media access. The app only ever sees the specific files you pick, and saves converted output to your gallery (the Movies/wavemp4/ folder) through the system MediaStore.
  • Network state (ACCESS_NETWORK_STATE) - added by Google Play's in-app-update component (below) to check whether a connection is available before offering an app update. It does not grant the app the ability to transfer your data, and Wave itself does not use it to send anything.

Google Play in-app updates

Wave uses Google Play's in-app-update component so it can offer you a newer version when one is published. That check is performed by the Google Play Store app already on your device, not by Wave reaching out over its own network access, and any update is downloaded and installed by the Play Store. Google's handling of that interaction is governed by Google's privacy policy. Wave receives no personal data from this process. On builds installed outside Google Play (for example a direct APK), this feature is simply inactive.

Data sharing and sale

Because the app collects no personal data, there is nothing to share, sell, or use for advertising or profiling. Wave contains no advertising SDK and no third-party trackers.

Data retention and deletion

Wave stores no personal data on any server, so there is nothing on our side to retain or delete. On your device, the app keeps only its own settings and a local list of your recent conversions; uninstalling the app removes all of that. Converted videos you saved to your gallery are ordinary files and remain until you delete them yourself.

Children

Wave is not directed at children under 13 and does not knowingly collect personal information from anyone, including children.

Changes to this policy

If a future version of the app adds anything that could affect your privacy (for example analytics or crash reporting), we will update this page and change the "Last updated" date before that version ships.

Contact

Privacy questions about the Wave Android app: technorology@gmail.com.