Last updated: 1 November 2026
This app records your voice, plays it backwards, and can write the result out as a file or a video. There is no account, no sign-in, and no server of ours that holds anything you record.
Every take is written to this app's private storage on your device. Nothing is uploaded, and no part of a recording is sent to us or to anyone else.
in airplane mode.
the app you choose and does not keep a copy outside its own storage.
not travel with a backup.
On the device only: whether the daily reminder is on, the time you chose for it, and the last playback speed and pitch you used. The app never asks for your name, email, phone number or location.
The app asks for microphone access when you tap record, not when you open the app. Audio is captured only while a recording is running and is written straight to the app's private storage.
The app shows ads from Google AdMob. AdMob may use an advertising identifier to limit repeats and to measure ads. Where the law requires it, a consent form appears on first launch (Google's User Messaging Platform), and you can reopen it from Settings → Privacy choices.
We do not give AdMob your recordings, and ad SDKs have no access to them.
The app sends Google Firebase Analytics a small number of event names — for example that a recording was reversed, or that an ad was shown. No audio, no waveform, no file name, no duration and no count of your takes is sent. Firebase also collects standard device and app information such as app version, country and a random app instance identifier.
If you turn on the daily line reminder, the notification is built on your phone from a list of sentences shipped inside the app. The app also subscribes to a public topic so we can send occasional app news; no device token or identifier of yours is stored by us.
This app is not directed at children under 13. If you believe a child has used it, there is nothing for us to delete on our side — everything is on the phone, and uninstalling removes it.
| What | How |
|---|---|
| Delete one take | Open Library, tap the bin on that row |
| Delete everything | Uninstall the app, or Android Settings → Apps → Sing Backwards → Storage → Clear data |
| Turn off the reminder | Settings → Daily line reminder |
| Change ad consent | Settings → Privacy choices (shown where the law requires it) |
| Reset the advertising ID | Android Settings → Google → Ads |
If this policy changes, the date at the top changes with it.
Questions about this policy: the developer email on this app's Google Play listing.