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Backtalk

Message yourself to stay organized.
New in version 0.3.2
- Dedicated Changelog screen to track app updates.
- New "Lock on screen off" setting and customizable lock timeouts.
- Biometric verification for sensitive actions (exports, security settings).
- App usage heatmap and activity streaks in Statistics.
- Multi-image selection, caption support, and SVG support.
- Staggered image grid and immersive mode for media preview.
- Journaling reminders with customizable notifications.
- "Send with Enter" preference and keyboard search action.
- Per-app lang
A chat-based note-taking tool for messaging yourself.
  • app screenshot
  • app screenshot
  • 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.

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  • Version 0.3.2 (32) suggested Added on Jun 05, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 6.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • read video files from shared storage
      Allows the app to read video files from your shared storage.
    • read user selected image and video files from shared storage
      Allows the app to read image and video files that you select from 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.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • off.kys.backtalk.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 5.0 MiB PGP Signature | Build Log

    • New in version 0.2.5
    - Support for attaching images from gallery or capturing directly via a new full-screen camera with flash and lens switching.
    - Ability to pin important messages with a dedicated pinning bar for quick navigation.
    - New management screen for creating and tracking message-based reminders.
    - Support for clickable hashtags and filtering messages by tags.
    - Enhanced statistics screen with media counts and dynamic pie chart slices.
    - Added expressive scale animations to the send button and smooth tran
  • Version 0.2.5 (25) - Added on May 24, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 6.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • show notifications
      Allows the app to show notifications
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read image files from shared storage
      Allows the app to read image files from 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.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • off.kys.backtalk.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 4.8 MiB PGP Signature | Build Log

    • New in version 0.1.8
    This update evolves your workspace into a high-performance, chat-style note ecosystem, launching faster via the Android Splash Screen API. New features include **expressive voice messaging** with real-time waveforms and **Thread Views** for organized thought-tracking. Capture ideas effectively using rich text Markdown, SmartText @mentions, and a **statistics dashboard** with animated charts to visualize productivity.

    Management is seamless with a modular settings menu, parallax onboarding, and
  • Version 0.1.8 (18) - Added on May 13, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 6.0 or newer.

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

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • 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.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • off.kys.backtalk.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 3.4 MiB PGP Signature | Build Log

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