ChainFlow vs OnTrack Interval Timer

A custom interval timer for routines where every interval can be different. Most workout timers are built around repeating the same work and rest periods. ChainFlow lets you build the exact sequence you need, with individual timing for every step. Create HIIT workouts, circuit training sessions, stretching and mobility routines, boxing rounds, exercise sequences, drawing practice, focus sessions, and more. BUILD ANY ROUTINE Add as many intervals as you need. Give each one its own name and timing, then drag them into the exact order you want. START FAST WITH TEMPLATES Begin with ready-made HIIT, Tabata, Boxing, Morning Mobility, Pomodoro, and Gesture Drawing templates—or start completely from scratch. Every template becomes a normal ChainFlow routine you can fully edit. HANDS-FREE TIMING Hit Start and focus on what you're doing instead of watching the clock. ChainFlow automatically moves through your sequence and gives you clear audio cues at each transition. • Works while your phone is locked or ChainFlow is in the background • Live Activities and Dynamic Island support • See your current interval and what comes next • Pause, skip forward, or return to the previous interval • Optional 3-2-1 countdown before starting • Works alongside music, podcasts, and other audio • Optional audio ducking during cues BUILD ONCE. USE IT AGAIN. Save your favorite routines, duplicate individual intervals or entire chains, reorder them anytime, and quickly adjust a routine for your next session. ChainFlow works especially well when your routine doesn't fit a rigid repeating timer: • Custom interval workouts • Circuit training • HIIT and Tabata • Stretching and mobility • Boxing and round training • Exercise and strength training • Yoga and meditation sequences • Gesture and figure drawing practice • Pomodoro and focus sessions Whether you're training, stretching, drawing, studying, or building a routine of your own, ChainFlow keeps the timing out of your head so you can stay in the flow.

Train Smarter. Run Faster. OnTrack is the ultimate track interval training timer designed specifically for runners who want to hit every pace checkpoint with precision. ▸ PACE-BASED INTERVALS Set your target pace and distance for each phase. OnTrack automatically calculates the exact time you should hit at every 100m, 200m, 400m checkpoint. ▸ AUDIO ALERTS Get notified at phase changes, set completions, and distance checkpoints. Never miss a split again - focus on running while OnTrack guides you. ▸ FLEXIBLE WORKOUT BUILDER Create complex interval structures with: • STEP blocks for simple intervals • REPEAT blocks for sets (e.g., 5 x 1000m) • Warm-up and cool-down phases • Custom rest periods ▸ PACE CHECKPOINT TABLE Before you start, see exactly what time you should hit at every distance marker. Perfect for track workouts where precision matters. ▸ WORKS OFFLINE No internet required. Your workouts are stored locally and ready whenever you are. --- EXAMPLE WORKOUT: - Warm-up: 10 min easy - Main Set: 5 x 1000m @ 4:00/km pace (Rest: 2 min) - Cool-down: 5 min easy OnTrack will tell you: • 1000m target time: 4:00 • 100m checkpoint: 0:24 • 200m checkpoint: 0:48 • 400m checkpoint: 1:36 ...and so on! --- Whether you're training for a 5K, marathon, or just want to improve your speed, OnTrack gives you the precision timing you need. Download now and take control of your interval training.