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Ultrasonic

F-Droid

Open source

A music streaming client for Subsonic servers

Version
4.9.0
Size
5.4 MB
Updated
Mar 11, 2026
Get from Download APK (v4.9.0)
Signing certificate on record

About this app

Ultrasonic is a Subsonic (and compatible servers) client to Android. You can use Ultrasonic to connect with your server and listen music.

Main features: * Small size & fast * Material You theme with dark and light variants * Multiple server support * Download tracks for offline playback * Bookmarks * Playlists on server * Shuffled playback * Jukebox mode * And much more!!

Note: Ultrasonic uses semantic release versions. Releases with a zero in the last digit introduce new features or significant changes, all other releases focus on fixing bugs.

The source code is available with GPL license in GitLab: https://gitlab.com/ultrasonic/ultrasonic If you have any issue, please post in: https://gitlab.com/ultrasonic/ultrasonic/issues Play store icon designed by: http://www.flaticon.com/authors/sebastien-gabriel

Licensed under GPL-3.0-only.

OfficialSignature VerifiedOpen Source

What's New in v4.9.0

Imported from the F-Droid repository index.

  • ### Fixes
  • - Can now download albums that end with a period (#1314)
  • - Retain playlist view when rotating screen (#1326)
  • - Now remembers last song played when playback is resumed outside of the main app (bluetooth, android auto, etc.) (#1303)
  • - Handles cover art fetch failure to prevent occasional persistent missing cover art (#1327)
  • ### Features

Version history

v4.9.0Latest
Signature continuous

Mar 11, 2026 · 5.4 MB · Android API 2636 · code 131

Imported from the F-Droid repository index.

  • ### Fixes
  • - Can now download albums that end with a period (#1314)
  • - Retain playlist view when rotating screen (#1326)
  • - Now remembers last song played when playback is resumed outside of the main app (bluetooth, android auto, etc.) (#1303)
  • - Handles cover art fetch failure to prevent occasional persistent missing cover art (#1327)
  • ### Features
BLUETOOTH_CONNECTINTERNETACCESS_NETWORK_STATEPOST_NOTIFICATIONSWAKE_LOCKMODIFY_AUDIO_SETTINGSBLUETOOTHFOREGROUND_SERVICEFOREGROUND_SERVICE_MEDIA_PLAYBACKFOREGROUND_SERVICE_DATA_SYNCorg.moire.ultrasonic.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSIONREORDER_TASKS

SHA-256 b06e4958e3f6040228e06e270729b2363358d1e2ba8348ad07a7ebc6a0f85daa

v4.8.0
Signature continuous

Dec 6, 2023 · 5.6 MB · Android API 2133 · code 130

Imported from the F-Droid repository index.

  • ### Features
  • - Improved display of rating stars
  • - Completely modernize all older code parts
  • - Updates for Android 14
  • - Update dependencies
BLUETOOTH_CONNECTINTERNETACCESS_NETWORK_STATEPOST_NOTIFICATIONSWAKE_LOCKMODIFY_AUDIO_SETTINGSBLUETOOTHFOREGROUND_SERVICEorg.moire.ultrasonic.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

SHA-256 98d069ec0cd386de0b0967807162f0a7ae4fc462600291625fc0ab10d0dfacfb

v4.7.1
Signature continuous

Sep 1, 2023 · 5.5 MB · Android API 2133 · code 129

Imported from the F-Droid repository index.

  • ### Fixes
  • - Fix a bug in 4.7.0 that repeat mode was activated by default.
  • ### Features
  • - Added custom buttons for shuffling the current queue and setting repeat mode (Android Auto)
  • - Properly handling nested directory structures (Android Auto)
  • - Add a toast when adding tracks to the playlist
BLUETOOTH_CONNECTINTERNETACCESS_NETWORK_STATEPOST_NOTIFICATIONSWAKE_LOCKMODIFY_AUDIO_SETTINGSBLUETOOTHFOREGROUND_SERVICEorg.moire.ultrasonic.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

SHA-256 766a5d2d268041838a22229fd7d2b4901f93d69d4a3b1c8191c4acfe180f358a

Will it run on your device?

CompatibilityLikely to run

78%

  • Runs on a broad range of modern Android versions.
  • ABI coverage is focused on newer 64-bit devices.
  • Aligned with the latest Android target SDK expectations.
What changed in this release
Size delta
-0.2 MB
Added permissions
FOREGROUND_SERVICE_MEDIA_PLAYBACK, FOREGROUND_SERVICE_DATA_SYNC, REORDER_TASKS
Removed permissions
None

Installation Guide

1

Open Settings on your Android device

2

Go to Security → Unknown sources (or Install unknown apps)

3

Enable "Allow from this source" for your browser or file manager

4

Open the downloaded APK file from your Downloads folder

5

Tap "Install" and wait for installation to complete

6

Launch the app from your home screen

Make sure to re-enable Unknown Sources restrictions after installation for security.

How to install this safely

How to verify the file you downloaded

Before you install anything, confirm the file is the one described here. On a computer, run shasum -a 256 your-download.apk (macOS or Linux) or certutil -hashfile your-download.apk SHA256 (Windows), then compare the output character-for-character with the SHA-256 on this page. If a single character differs, the file is not the build we recorded — delete it.

What the signing certificate proves

Every Android app is signed with a private key that only its developer holds. The fingerprint on this page is a hash of the matching public certificate, and it proves continuity rather than identity: it tells you a build came from whoever signed the earlier ones. Android enforces this at install time — if a package claiming to be org.moire.ultrasonic is signed with a different key, the system will refuse to install it over your existing copy. A fingerprint that changes between releases is worth pausing on, because a repackaged app that has been modified by someone else cannot keep the original signature.

How to roll back to an earlier version

If the current release misbehaves, 4.8.0 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Ultrasonic first — which clears its local data unless you have a backup. Reinstall the older APK only if its signing fingerprint matches the build you already trust, and check the API range: an older release may target an Android version your device has moved past.

Why we list sources instead of hosting everything

The official store channel is almost always the right choice: it updates automatically and carries the publisher's own distribution guarantees. A direct APK is useful when a device has no store access, when a rollout has not reached your region, or when you need a specific version — and only when the publisher has authorized that copy. APKBrowse does not list pirated, cracked, or unauthorized rebuilds of Ultrasonic, and a listing is removed when the evidence for it stops holding up.

Get Ultrasonic

Every source we list for org.moire.ultrasonic is legality-reviewed. Pirated or cracked builds are never offered.

Other sources

F-Droid listing

official

F-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.

Source code

verified publisher

The upstream repository this build is compiled from.

We check legality and signature continuity, but device behaviour still varies. Install at your own discretion.

App Information

Developer
F-Droid
Category
Social
Android
8.0+
Architectures
Version
4.9.0 (code 131)
Size
5.4 MB
Updated
Mar 11, 2026
Package name
org.moire.ultrasonic

Security Verification

File integrity
SHA-256 recorded
Signing certificate
Fingerprint on record
Official source
Download APK (v4.9.0)

We record provenance; we do not run malware scans. Verify the hash yourself before installing.

SHA-256 Hash

b06e4958e3f6040228e06e270729b2363358d1e2ba8348ad07a7ebc6a0f85daa

Signing certificate

9e2946660ea036ca4352d9f60e77368138c862aa5637270a58f5f32836aa3bdc

Permissions Required

What each permission lets Ultrasonic do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.

BLUETOOTH_CONNECTConnect to Bluetooth devices.
INTERNETSend and receive data over the internet.
ACCESS_NETWORK_STATECheck whether the device is online and on what kind of connection.
POST_NOTIFICATIONSShow notifications.
WAKE_LOCKKeep the device awake, e.g. to finish a download or play media.
MODIFY_AUDIO_SETTINGSChange volume and audio routing.
BLUETOOTHConnect to paired Bluetooth devices.
FOREGROUND_SERVICEKeep running in the background with a visible notification.
FOREGROUND_SERVICE_MEDIA_PLAYBACKKeep playing audio or video in the background.
FOREGROUND_SERVICE_DATA_SYNCRun a background service to sync data.
org.moire.ultrasonic.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
REORDER_TASKS

Previous Versions

Signature verified

The signing certificate fingerprint for this release is on record, so a build that does not match it did not come from this publisher.

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