C2K — Couch to 5K & 10K 1.2.23
Offline C25K & C210K trainer with voice coaching. No ads, no tracking.
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2.31 MB · app-release.apk
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About C2K — Couch to 5K & 10K
C2K is an offline running trainer that guides you from the couch to running 5K, 10K, and beyond. Follow a clear plan, hear hands-free coaching, and keep your progress private — with no ads and no tracking.
Programs:
• Pre-C25K — 3-week gentle starter for absolute beginners
• Couch to 5K (C25K) — 9-week program, 3 runs per week
• Bridge to 10K (B210K) — 6-week bridge for C25K graduates
• Couch to 10K (C210K) — 14-week program, continues from C25K
• One Hour Runner — 13-week progression from 30 to 60 minutes continuous running
• 5K Improver — 8-week speed and stamina program for runners who can already complete 5K
Features:
• Audible voice prompts — "Start running", "Walk for 90 seconds", countdown warnings
• Customizable coaching — adjust voice speed/volume, countdown warning timing, and mid-interval cues
• Test voice playback before a workout, with Android text-to-speech diagnostics
• Vibration cues as an alternative or addition to voice
• Tones mode — short chimes instead of a voice for interval changes and countdowns
• Adjustable vibration strength and language selection
• Background workout timer — continues with screen off
• GPS tracking (optional) — records distance and pace; works without GPS too
• Treadmill mode — indoor runs without GPS
• Skip the warm-up or cool-down — in Settings, or with one tap during a workout
• Workout history — session log with total distance, time, best pace, longest run, and calorie estimates
• Progress tracking — remembers which weeks and days you've completed, with the option to reset
• In-app running guide — FAQ covering pacing, gear, and terminology
• Available in 8 languages — English, German, Spanish, French, Galician, Portuguese (Brazil), Russian, Turkish
• Works offline — no internet permission required
• No proprietary services required — compatible with GrapheneOS and privacy-focused 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
• VIBRATE — optional vibration cues during workouts
C2K is free software released under the GNU General Public License v3.
License: GPL-3.0-only
Programs:
• Pre-C25K — 3-week gentle starter for absolute beginners
• Couch to 5K (C25K) — 9-week program, 3 runs per week
• Bridge to 10K (B210K) — 6-week bridge for C25K graduates
• Couch to 10K (C210K) — 14-week program, continues from C25K
• One Hour Runner — 13-week progression from 30 to 60 minutes continuous running
• 5K Improver — 8-week speed and stamina program for runners who can already complete 5K
Features:
• Audible voice prompts — "Start running", "Walk for 90 seconds", countdown warnings
• Customizable coaching — adjust voice speed/volume, countdown warning timing, and mid-interval cues
• Test voice playback before a workout, with Android text-to-speech diagnostics
• Vibration cues as an alternative or addition to voice
• Tones mode — short chimes instead of a voice for interval changes and countdowns
• Adjustable vibration strength and language selection
• Background workout timer — continues with screen off
• GPS tracking (optional) — records distance and pace; works without GPS too
• Treadmill mode — indoor runs without GPS
• Skip the warm-up or cool-down — in Settings, or with one tap during a workout
• Workout history — session log with total distance, time, best pace, longest run, and calorie estimates
• Progress tracking — remembers which weeks and days you've completed, with the option to reset
• In-app running guide — FAQ covering pacing, gear, and terminology
• Available in 8 languages — English, German, Spanish, French, Galician, Portuguese (Brazil), Russian, Turkish
• Works offline — no internet permission required
• No proprietary services required — compatible with GrapheneOS and privacy-focused 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
• VIBRATE — optional vibration cues during workouts
C2K is free software released under the GNU General Public License v3.
License: GPL-3.0-only
| Release info | Update on Oct 30, 2026 |
|---|---|
| Release notes | What's new o Interval changes can also buzz your smartwatch. Settings -> Also notify smartwatch. Thanks to @west1nat0r (#46). o Stop the same workout early twice and C2K suggests repeating the week before. o Location is only requested for workouts that use GPS. o Fixed the start of voice cues being cut off while other audio, such as FM radio, was playing. Thanks to @Jep-z11 for reporting it (#50). o Run, walk and completed-day colors are easier to read. o Pace and longest run in History now show their units. SHA-256 0e46f8b1ddd3b2860f64869d413336664318340e9b7142c386d1556ae9a67e2c |
| Listing data | F-Droid |
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