Reverse Music Player is an app by Olive Media in the Music & Audio category, listed since at least October 2013. It includes native code only for x86 32-bit, ARM (legacy), ARM 32-bit and MIPS, so it won't run on 64-bit-only phones such as recent Pixels.
It asks for 5 permissions, 2 of them sensitive: record audio and modify shared storage.
What's new in v1.0.3
Faster launch.
Privacy policy added.
Fix for low rate mp3.
Description
From the listing uploaded by “apps”.
Reverse and listen to your track easily with Reverse Music Player.
If you like the effect of your modifications then save it to file on your device.
Features:
★ Play reverse music / sound in audio formats: wav/mp3/ogg/flac.
★ Change Tempo of your reverse track in range 4x slower to 4x faster.
★ Set Pitch Octaves Change between -1 and +1.
★ Save / Export reverse & modified track to: wav/ogg/flac.
★ Tempo & Pitch may be changed in any moment.
★ 2 modes of changing Tempo & Pitch - slider (fast) / pad (accurate).
Usage:
To play reverse music just click "SELECT" button and choose track from music library or by browsing your device.
Supported formats: wav/mp3/ogg/flac.
If you select .wav file, then music may be instantly played. For other audio formats sound must be prepared for optimize and enable reverse playing (It usually takes few seconds for normal-length track on new & fast devices). It does NOT change your original files.
App requires temporary space for uncompressed tracks on your device. For normal 3 minutes long track is about 20MB, for longer more, for shorter less. Usually you don't have to worry about this.
If you want to have more fun you can change tempo or pitch of your audio.
"Relative Tempo" describes how fast music will be played, 1.00 is original/non-changed tempo, 0.5 is 2x slower, 2.0 is 2x faster. Range is: 0.25 .. 4.0 .
"Pitch Octaves Change" describes how pitch will be changed with diffrence represented as -1.00 .. +1.00 octaves, 0.00 is original/non-changed pitch.
These values may be adjusted by slider or by clicking button near them and setting accurate value.
You may also save your reverse music into file.
Supported formats for export / saving: wav/ogg/flac.
For OGG format encoding may be long task.
Please note that most of operations are cpu-intensive and for good results you need a performat device. Usage of multiple features at once (like tempo change + reverse play) increase hardware requirements.
More technical info:
Supported stream format: 8/16 bit encoding, 1/2 channels, 8000 / 11025 / 16000 / 22050 / 44100 / 48000 Hz sample rate. Used sample rate has to be supported by device, 8 bit encoding is extended to 16 bit encoding so device has to support 16 bit.
OGG encoder supports only sample rate 44100 Hz.
Permissions:
✓ App uses permissions for writing on SD card to enable exporting tracks.
✓ Other permissions like "Internet" are used by advertising services.
Ads:
May be easily ignored if you don't want to support this app.
They appear on exit or in side-menu when user demands to show them.
Please consider rating app if you find it useful, it really helps, thank you.
If you like this app you may also enjoy "Music Speed Changer":
https://play.google.com/store/apps/details?id=com.hipxel.audio.music.speed.changer
or "Text To Speech":
https://play.google.com/store/apps/details?id=com.hipxel.text.to.speech.save.us
Security & authenticity
Security rating: Trusted
Signing certificate
Certificate issued to “Janusz Jankowski”Not the developer's name (“Olive Media”). Names in certificates can't be verified, so this alone proves nothing.
Uploaded by “apps”Platinum tier · 3,423,810 followers · uploading since 2010
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (5)
Reverse Music Player requests 5 permissions, 2 of them sensitive.
Can I install this APK over the version I already have?
Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.
Is the Reverse Music Player APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is fac69b49a8b5e247c0b77355af08015b.