ChainFlow- Interval HITT Timer

Build workout routines where every interval is different — perfect for HIIT, circuit training, stretching & mobility. Custom sequences, clear audio cues, zero clutter.

ChainFlow is the interval timer for routines where every interval is different.

Most timers only do rigid work/rest Tabata. ChainFlow lets you chain together as many intervals as you want — each with its own setup, work, and alert time — so you can build the exact routine you do: HIIT circuits, boxing rounds, mobility flows, stretching sequences, physical therapy, even focus/study blocks.

WHY PEOPLE LOVE IT • Build custom sequences — no two intervals have to match • iOS-style scroll pickers — set any time in seconds • Clear audio cues — soft beeps for transitions, distinct alarm on finish • Runs the whole chain hands-free — glance-free, screen-off friendly • Clean dark interface — no clutter, no accounts required to start • Saves your routines — pick up right where you left off

PERFECT FOR • HIIT & Tabata training • Circuit training & CrossFit-style WODs • Boxing / MMA rounds with varying times • Stretching, mobility & yoga flows • Physical therapy & rehab intervals • Focus / study / Pomodoro blocks

Free to use. Upgrade to Pro for unlimited routines and cloud sync across devices.