C2K โ Couch to 5K & 10K App
C2K is a free, open-source running trainer for Android that guides you from the couch to running 5K or 10K โ with no Google services, no tracking, and no ads.Features:
โข Couch to 5K (C25K) โ 9-week program, 3 runs per week
โข Couch to 10K (C210K) โ 14-week program
โข Audible voice prompts โ "Start running", "Walk for 90 seconds", countdown warnings
โข Background workout timer โ continues with screen off
โข GPS tracking (optional) โ records distance and pace; works without GPS too
โข Progress tracking โ remembers which weeks and days you've completed
โข Works offline โ no internet permission required
โข No Google Play Services required โ compatible with GrapheneOS and de-Googled devices
Permissions:
โข FOREGROUND_SERVICE โ keeps the workout timer running with screen off
โข WAKE_LOCK โ prevents the CPU sleeping mid-workout
โข ACCESS_FINE_LOCATION โ optional GPS for distance/pace tracking (you can skip this)
โข POST_NOTIFICATIONS โ workout notification with pause/stop controls
C2K is free software released under the GNU General Public License v3.
