Build it once. Then just move.

HiInterval is a native interval timer for workouts that need more than one repeating beep. Build exact phases, side switches, recoveries, and rounds once. During training, the screen tells you only what matters now.

See what it can do How access will work

HiInterval Train screen with a selected upper-body interval workout

HiInterval workout screen showing a teal work phase

Early access

Everything is unlocked while HiInterval is being tested.

There are no workout limits and no purchase prompts in the early-access App Store build. Use it hard, find the rough edges, and tell us what should be better before paid access is introduced.

Built for actual training

The timer should disappear into the workout.

Exact plans

Warm-up, work, recovery, round recovery, cool-down, exercise-specific timing, and deterministic left/right phases live in reusable plans.

Glanceable cues

Work, recovery, switch, and round recovery use distinct full-screen colors. Spoken, tonal, haptic, and final-countdown cues keep your eyes off the phone.

Useful history

Sessions, total training time, streaks, workout details, plan reuse, and CSV export stay available without an account or cloud service.

Plan once

Reusable workouts, not disposable timers.

Pick a plan, edit every phase, and come back to exactly the same structure next time.

HiInterval plans library showing reusable interval workouts

Recover

Color does the explaining.

One glance tells you whether to work, recover, switch sides, or breathe before the next round.

HiInterval workout screen showing a violet recovery phase

Round recovery

Long breaks look different too.

Round-level transitions are visually distinct, so there is less mental bookkeeping mid-session.

HiInterval workout screen showing an orange round recovery phase

History

Keep the data you actually care about.

Completed sessions, duration and streaks are saved locally and can be exported as CSV.

HiInterval history screen with session count, training duration and completed workouts

Simple access model

Free enough to stay useful. Cheap enough to unlock.

The future access model is designed so occasional use remains free. The current App Store version is unlimited and free; the limits and purchases below begin only when monetization is introduced.

Free start

At least 30 days + 10 completed workouts

€0

free until both milestones are complete

All workout features
Take as long as you need for 10 workouts
No ads
No account required

Free ongoing

Three workouts every calendar month

€0

for occasional training

3 completed workouts / month
Plans and history stay available
No forced account

Unlimited

Remove the workout limit

€1 / year

or €5 once for lifetime access

Unlimited completed workouts
Annual or lifetime option
Local App Store equivalents may vary

Nothing is charged during early access. The future prices shown here are the planned model. Any paid access will be offered through Apple's in-app purchase system.

Private by default

No account. No analytics. No ad profile.

Workout plans, settings, usage and history are stored on your device. Weekly reminders are local notifications. The app does not need a backend to run your workout.

Read the privacy policy