A simple audio toy that lets you record and playback audio forward or reversed.
About this app
A very simple audio toy that lets you record audio, and play it back forward, or reversed.
I built this app out of spite after using another audio reversing app that had very intrusive ads. It consists of a single Godot UI scene, with a few buttons and a couple of AudioStreamPlayer nodes.
Licensed under GPL-3.0-only, by Echo.
What's New in v1.3
Imported from the F-Droid repository index.
Version history
Jun 10, 2026 · 48.8 MB · Android API 24–35 · code 3
Imported from the F-Droid repository index.
SHA-256 c89f697766784dda1af3d8c2bd83faade0f4343c41f7ad56e5cf91d83aca2bcc
Nov 14, 2025 · 48.8 MB · Android API 24–35 · code 2
Imported from the F-Droid repository index.
SHA-256 e59c9b730a03d469315b6649c4e3e91e4bc180bbab77c0450d11f8f7b7c8dce6
Will it run on your device?
92%
- Runs on a broad range of modern Android versions.
- Multiple CPU architectures are covered.
- 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 me.proton.echophenomena.recordplayreverse 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, 1.2 is the last build before it. Android will not install an older version code over a newer one, so you must uninstall Record Play Reverse 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 Record Play Reverse, and a listing is removed when the evidence for it stops holding up.
Get Record Play Reverse
Every source we list for me.proton.echophenomena.recordplayreverse 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
c89f697766784dda1af3d8c2bd83faade0f4343c41f7ad56e5cf91d83aca2bcc
Signing certificate
5b1fbbe4a5c0ee373020116de5d9f69effc92ae396802a5fa85b9ff0adf85864
Permissions Required
What each permission lets Record Play Reverse do. A highlighted one is worth a second look — not necessarily wrong, just worth asking whether this app needs it.
Previous Versions
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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