IntenSync logo IntenSyncInterval timer app by Equilibelle

Free interval timer app for iPhone and Android

Interval Timer App for HIIT, Tabata, Circuits, and Workout Rounds

IntenSync helps you build work, rest, reset, and cooldown blocks for structured training. Use it as a HIIT timer, Tabata timer, circuit timer, boxing round timer, EMOM timer, or focused conditioning timer with clear cues and useful progress tracking.

HIIT timer Tabata timer Circuit timer Boxing rounds EMOM workouts Wearable support

Built for real interval training

IntenSync is designed around the timer moments that matter during effort, recovery, and repeatable workout structure.

Flexible timer blocks

  • Workout intervals for effort blocks.
  • Rest intervals for short recovery.
  • Reset recovery between rounds.
  • Cooldown at the end of a session.

Clear training cues

Voice prompts, beeps, and haptics help you stay focused without checking the screen every few seconds.

Progress beyond a stopwatch

Track session completion, intensity trends, adherence, and workout history so the timer supports your larger training plan.

Common interval timer workflows

Use one app for simple timers, repeatable templates, and structured training plans.

HIIT

High-intensity intervals

Set work and rest periods for sprint intervals, bodyweight training, conditioning circuits, and mixed modal sessions.

Tabata

Short repeatable rounds

Create fast 20/10-style rounds or adjust the ratio for your coach, class format, or personal training plan.

Circuits

Exercise flow and recovery

Organize exercise sequences, repeat rounds, add reset time, and keep transitions predictable during class or solo workouts.

Interval timer questions

Short answers for people comparing interval timer apps before downloading.

Is IntenSync free?

Yes. Core interval timer features are available for free. Premium unlocks advanced coaching, analytics depth, community limits, and planning tools.

Does it work for Tabata and HIIT?

Yes. IntenSync supports short repeat intervals, longer work/rest sessions, multi-round circuits, reset blocks, and cooldowns.

Can I use it without an account?

Core timer use works without signing in. An account enables synced progress, community, and premium-eligible flows.

Where are the app links?

Use the App Store and Google Play buttons above, or search for IntenSync by Equilibelle in your app store.