Ultrasonic is an open-source (GPL-3.0-only) Android app by ultrasonic. The APK we host is 5.4 MB, it needs Android 8.0 or newer, and it declares 12 permissions.
The file on this page is Ultrasonic 4.9.0, 5.37 MB, and it installs on Android 8.0 and newer.
We compared the signing certificate of this build with the certificate recorded the first time org.moire.ultrasonic entered the site, and published both the file's SHA-256 and the certificate's fingerprint above so you can check the download yourself. That comparison says the file was not repackaged by someone else; it is not a review of what the app does.
The manifest declares 12 permissions, none of which cover contacts, location, SMS, the camera or the microphone.
Its licence is GPL-3.0-only. We took this build from F-Droid, and the source for this exact version is linked below.
We do not show a star rating or an install count for this page: we have no measured figure for either, and a number we cannot source is worth less than an empty field.
- Version
- 4.9.0
- Size
- 5.37 MB
- Requires Android
- API 26
- Package
- org.moire.ultrasonic
- Signature checked on
- Sep 18, 2026
- Where this file came from
- F-Droid
- Licence
- GPL-3.0-only
- Source code
- Source for this version
File SHA-256: b06e4958e3f6040228e06e270729b2363358d1e2ba8348ad07a7ebc6a0f85daa
Signing certificate (SHA-256): 9e2946660ea036ca4352d9f60e77368138c862aa5637270a58f5f32836aa3bdc
We check that this file carries the same signing certificate as earlier releases of the same package. That shows the APK was not repackaged by someone else — it is not a security review of the app.
Declared permissions
- BLUETOOTH_CONNECT
- INTERNET
- ACCESS_NETWORK_STATE
- POST_NOTIFICATIONS
- WAKE_LOCK
- MODIFY_AUDIO_SETTINGS
- BLUETOOTH
- FOREGROUND_SERVICE
- FOREGROUND_SERVICE_MEDIA_PLAYBACK
- FOREGROUND_SERVICE_DATA_SYNC
- org.moire.ultrasonic.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
- REORDER_TASKS
Screenshots
