reTONE
In development · coming soonFree · Android 4.0+

Your old phone.
Now a music player.

In development · coming soonFree · Android 4.0+ · No ads
NEWSThe website is live. The app is still in development.

A music player for old Android phones.

Turn a retired phone into a dedicated player, from the moment it powers on.Home screen and lock screen, all built around music.No root, no mods, and no tracking.

Install. Allow. Listen.

1Copy the APK

Download it on your computer and copy it over USB. On Android 10 and later, the phone's browser works too.

2Allow the install

Let Android install apps from unknown sources, then tap Install.

3Add music and play

Copy your files into the Music folder and they show up in the library.

Read the full guide ›

Old phones
still have it.

Six real phones drawn to scale, showing actual reTONE screens (player, lock screen, library)

Old phones sell for next to nothing at secondhand stores.Today’s apps won’t run, but the hardware is still a joy.Instead of chasing the latest phones, reTONE gives them one job: music.

Small phones make
better music players.

Many older phones fit in one hand, which is just right for music.Add screens drawn in black and amber, found only in reTONE.It does nothing while idle, so even old phones stay quick.

Now playing
Now playingSwipe to skip
Library
LibraryAlbums, artists, tracks, playlists
Lock screen
Lock screenFull-screen artwork
Device & audio
Device & audioSoC, DAC, output paths

Only what a music player needs.

Runs as your home screen

Power on and you land on the player, not the usual home screen. It also works as a regular app.

Music, and nothing else

Silent DAP mode mutes notifications, ringtones and alarms. Turn it off and your volume levels are restored.

Artwork on the lock screen

Wake the screen to see the album art and controls. Your PIN still protects the phone.

The phone's own sound settings

Open the manufacturer's sound settings straight from the Sound tab.

An old phone.
No compromise on sound.

Tracks Android would resample, and tracks the phone can’t even read: reTONE handles both itself, with care.The bottom of the player screen shows the signal path, exactly as it is.

FLAC 24/96 → USB AUDIO • 96 kHz DIRECT

An Xperia P connected to an OPPO HA-2. The screen shows the reTONE readout USB AUDIO • 96 kHz DIRECT. 3D illustration
Resampled once

Only when needed, done carefully before Android

Plays what the phone can’t

Hi-res FLAC, DSD, AIFF, ALAC

Straight to a USB DAC

Bypasses Android, at rates the DAC supports

DIRECT means direct

Never shown on a path known to resample

More on how reTONE handles sound ›

Specs

The player screen

Compatibility

  • Android 4.0 and later
  • ARM (armeabi-v7a, arm64-v8a)
  • No root or custom ROM needed

Formats

  • Anything the phone plays (MP3, AAC and more)
  • FLAC, WAV, AIFF, ALAC, hi-res included
  • DSD: DSF, DFF (uncompressed), DSD64 to DSD256

Output

  • Headphones, speaker, Bluetooth
  • Direct output to USB DACs (USB Audio Class 2)
  • Native DSD on supported DACs

Resampling

  • Kaiser-window FIR filter, polyphase
  • Flat to 20 kHz (design value)
  • At most one conversion

Screens

  • Works as a home screen (optional)
  • Full-screen artwork lock screen
  • Device & audio information

Network and pricing

  • No network access by default (Network features off)
  • Collects no data about you
  • Free, no ads
  • Every release signed with the same key
See release plansFull specs ›

No mods. Fully reversible.

reTONE needs no root or custom ROM and bundles no manufacturer software. Undo its settings, uninstall it, and your phone is exactly as it was.

Guide ›FAQ ›

Made for the love of it.

reTONE is made by Iida Piano Co., Ltd., out of a love for old phones and audio. Everyone gets every feature. Support is optional.

Devlog ›About reTONE ›Contribute ›