Chain HIIT, Tabata, EMOM and circuit intervals — each with its own work and rest — into one routine that auto-advances. Loud, clear audio cues mean you never stop mid-rep to tap your phone.
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Fixed 20/10 timers are fine until your workout isn't 20/10. ChainFlow lets every interval be a different length, so one app builds a proper circuit: 40s push-ups, 60s rest, 30s burpees, 90s plank — chained and looping automatically.
Add each exercise with its own setup, work and rest. Toggle loop to repeat the whole chain.
Distinct beeps signal work and rest. A Live Activity shows the current interval on your lock screen.
Save leg day, HIIT and warm-up as separate chains and launch any of them in a tap.
| Format | Pattern | Best for |
|---|---|---|
| Tabata | 20s work / 10s rest × 8 | Fat-burn finishers |
| HIIT circuit | 40s work / 20s rest × 6 moves | Full-body conditioning |
| EMOM | Every minute on the minute × 10 | Strength + cardio |
| Boxing rounds | 3m round / 1m rest × 5 | Bag & sparring work |
Yes. Chain intervals of any length, each with its own work and rest, then loop the whole thing. HIIT, Tabata, EMOM, circuits and mixed routines are all just chains.
Yes. Audio cues play on every transition even when locked or in your pocket, and the current interval shows on your lock screen.
Definitely — variable interval lengths handle WODs and timed rounds with rest, not just fixed cycles.
Free to download and use. A one-time $4.99 Pro unlock adds unlimited saved routines and cloud sync.
Free on the App Store. Chain your circuit and press play.
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