Build any interval
Set warm-up, work, rest, cool-down, and rounds. Give individual rounds their own names and durations when the session calls for it.
Phase — Interval Timer
Every interval workout, one timer.
Build HIIT, Tabata, EMOM, circuits, runs, and whatever comes next. Spoken cues keep you moving; flexible setup keeps the workout yours.
- No ads
- No subscription required
- No account
- Workouts run offline
30+
ready-made workouts
Voice cues stay with you
30+curated workouts
14completed workouts to try
1×one-time unlock
0accounts or ads
One timer, many ways to move
Simple at the surface. Flexible underneath.
Start quickly with a preset or shape every round yourself. Phase stays out of the way once the workout begins.
Keep your eyes off the screen
Spoken countdown and phase cues continue while the phone is locked, face-down, or in your pocket.
Start from something good
Browse ready-made HIIT, circuits, runs, stretching sessions, and guided Journeys. Use them as-is or make them yours.
Own your progress
Favorites, history, statistics, and backups stay under your control—without an account or workout-syncing server.
Inside Phase
From “ready” to the final interval.
A calm training hub before the workout. A bold, glanceable timer when every second matters.
Built around ownership
Your training should belong to you.
Phase stores your workout history, favorites, progress, and preferences on your phone. Export a backup whenever you want. No account required.
Read the privacy policy →Local-first data
Portable backups
No advertising profile
Try it, then buy it once
Pay once. No pressure clock.
Try 14 completed workouts at your own pace. If Phase earns a place in your training, Phase Unlock removes the workout limit with one purchase and no recurring charge.