Reference tones source for musical instruments tuning
About this app
This simple application is intended first of all for those musicians who like to tune their instruments relying mainly on ears rather than using various modern tuners with visual indication, or for all who needs a reference musical tone for any reason. It produces an audible reference tone by demand just like a classic tuning fork, and, being installed on a smartphone, is always ready to use.
Licensed under MIT, by Igor B. Poretsky.
What's New in v1.0.3
Imported from the F-Droid repository index.
- * Prepared for publication on F-Droid
Version history
Dec 9, 2024 · 0.9 MB · Android API 23–35 · code 103
Imported from the F-Droid repository index.
- * Prepared for publication on F-Droid
SHA-256 eab8139a064dbb8cffd373ced03893fbe32a23f624cde64ccad13e29de244daf
Will it run on your device?
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.
Installation Guide
Open Settings on your Android device
Go to Security → Unknown sources (or Install unknown apps)
Enable "Allow from this source" for your browser or file manager
Open the downloaded APK file from your Downloads folder
Tap "Install" and wait for installation to complete
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 io.github.poretsky.tuningfork 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
No earlier build is on record for Tuning fork, so there is nothing to roll back to yet. When a second version is published, this section will explain how to move between them safely.
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 Tuning fork, and a listing is removed when the evidence for it stops holding up.
Get Tuning fork
Every source we list for io.github.poretsky.tuningfork is legality-reviewed. Pirated or cracked builds are never offered.
Other sources
F-Droid listing
officialF-Droid builds this app from source and signs it. This is its official listing, with older builds and full release notes.
Source code
verified publisherThe 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
Security Verification
We record provenance; we do not run malware scans. Verify the hash yourself before installing.
SHA-256 Hash
eab8139a064dbb8cffd373ced03893fbe32a23f624cde64ccad13e29de244daf
Signing certificate
83d77155123e62ceb41fcd896c79b180b7a2e25db2cb2990e234192e78127490
Permissions Required
What each permission lets Tuning fork do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
No earlier build is on record — this is the first release we have listed.
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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