package icon

C2K — Couch to 5K & 10K

Free, open-source C25K/C210K running trainer. No Google, no tracking.
C2K is a free, open-source running trainer for Android that guides you from the couch to running 5K or 10K — with no Google services, no tracking, and no ads.

Features:
• Couch to 5K (C25K) — 9-week program, 3 runs per week
• Couch to 10K (C210K) — 14-week program
• Audible voice prompts — "Start running", "Walk for 90 seconds", countdown warnings
• Background workout timer — continues with screen off
• GPS tracking (optional) — records distance and pace; works without GPS too
• Progress tracking — remembers which weeks and days you've completed
• Works offline — no internet permission required
• No Google Play Services required — compatible with GrapheneOS and de-Googled devices

Permissions:
• FOREGROUND_SERVICE — keeps the workout timer running with screen off
• WAKE_LOCK — prevents the CPU sleeping mid-workout
• ACCESS_FINE_LOCATION — optional GPS for distance/pace tracking (you can skip this)
• POST_NOTIFICATIONS — workout notification with pause/stop controls

C2K is free software released under the GNU General Public License v3.
  • 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.

Download F-Droid
  • Version 1.0.3 (4) suggested Added on Jun 03, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "location"
      Allows the app to make use of foreground services with the type "location"
    • show notifications
      Allows the app to show notifications
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • com.hackerapps.c2k.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 1.7 MiB PGP Signature | Build Log

Find Apps