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Echo

Time travelling audio recorder for Android.
New in version 2.0.0

  • Bumped the minimum Android SDK level to 30 (Android 11)

  • Fixed a crash when disabling & re-enabling listening on recent devices

  • Fixed the lag issue that prevented the app from showing current recording time after opening the app

  • Removed obsolete links & references to Google Play

Continuously record audio for retrieval at a later time.

Unless saved, recordings are deleted on a rolling basis.


  • record harassment and bullying (even when you didn't anticipated them)

  • save important pieces of information (phone numbers / passwords / instructions)

  • record cute/funny moments

  • prove that someone said (or didn't say) something



Limitations

The app employs a range of tricks to reduce battery usage but it's still draining quite a bit.
You'll have to check your device to see how it affects your battery.

Battery drain is comparable to having constant audio playback.
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 2.0.0 (15) suggested Added on Jun 11, 2025

    This version requires Android 11 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "microphone"
      Allows the app to make use of foreground services with the type "microphone"
    • android.permission.MANAGE_EXTERNAL_STORAGE
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • eu.mrogalski.saidit.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.7 MiB PGP Signature | Build Log

  • Version 1.3.39 (14) - Added on Oct 04, 2021

    This version requires Android 4.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 1.5 MiB PGP Signature | Build Log

  • Version 1.3.38 (13) - Added on Oct 31, 2014

    This version requires Android 4.0 or newer.

    It is built by F-Droid and guaranteed to correspond to this source tarball.

    Permissions
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.

    Download APK 1.5 MiB PGP Signature | Build Log

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