Backtalk

Message yourself to stay organized.

New in version 0.4.1

- Search Enhancement: Implemented debouncing and improved cursor handling in search field.
- Clipboard & Markdown: Added clipboard actions and Markdown escaping support in the input bar.
- UI Improvements: Enhanced Statistics UI with a new best streak metric and refined Settings icons.
- Stability: Fixed crashes on Onboarding screen and improved microphone permission handling for audio recording.
- Performance: Offloaded backup operations to IO dispatcher for better responsiveness.

A chat-based note-taking tool for messaging yourself.

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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 0.4.1 (41) suggested Added on Jul 28, 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 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.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- 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 5.2 MiB PGP Signature | Build Log

New in version 0.4.0

- Image Compression: New processing pipeline with quality settings.
- Backup Retention: Automated cleanup of old backups.
- Media Picker: Added folder-based filtering and MVVM refactor.
- Status Feedback: Migrated to GlobalStatusHost for app-wide feedback.
- Input Experience: ViewModel-driven logic for better state management.
- UI Overhaul: Redesigned Settings items and improved IME handling.
- Build: Upgraded to AGP 9.3.0, Gradle 9.6.1, and Kotlin 2.4.10.

Version 0.4.0 (40) - Added on Jul 20, 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 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.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- 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 5.1 MiB PGP Signature | Build Log

New in version 0.3.8

- AMOLED Mode: New dark theme option for OLED screens to save battery.
- Status Banners: New global loading and error indicators.
- Message Interactions: Long-press context menu and onboarding swipe hints.
- Rich Content: Support for lists and checkboxes in messages.
- UI Refinement: Redesigned floating input bar and image attachment grid.
- Stability: Improved data wipe operations and message list auto-scrolling.
- Platform: Optimized for Android 15.

Version 0.3.8 (38) - Added on Jul 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 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.
- ask to ignore battery optimizations
  
  Allows an app to ask for permission to ignore battery optimizations for that app.
- 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 5.2 MiB PGP Signature | Build Log

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