# Interval Timer: Workout, HIIT

> Material Design Interval Timer for Fitness, HIIT, Stretching, Workouts

Canonical page: [https://chrome-stats.com/d/com.mdev.intervaltimer](https://chrome-stats.com/d/com.mdev.intervaltimer)

## Overview

- **ID:** `com.mdev.intervaltimer`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** MDev Mobile Apps
- **Category:** HEALTH\_AND\_FITNESS
- **Downloads:** 370,700
- **Rating:** 4.83 / 5 (3,713 ratings)
- **Version:** 3.7.3
- **Last updated:** 2026-09-03
- **First published:** 2020-11-10
- **Publisher country:** DE
- **Size:** 36 MB
- **Data as of:** 2026-09-15
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.mdev.intervaltimer)
- **Website:** [https://www.instagram.com/mdev.apps/](https://www.instagram.com/mdev.apps/)
- **Privacy policy:** [https://docs.google.com/document/d/e/2PACX-1vSHPaS8phTd13LphQV2wgBDWcxhE2onJB4xoafFcT\_WCiGCCeQr0Tae1-C4kx6d6aInbxx2ONcdjsIh/pub](https://docs.google.com/document/d/e/2PACX-1vSHPaS8phTd13LphQV2wgBDWcxhE2onJB4xoafFcT_WCiGCCeQr0Tae1-C4kx6d6aInbxx2ONcdjsIh/pub)

## Description

Interval Timer: Workout, HIIT is a Material Design interval timer built for HIIT, Tabata, cardio, strength circuits, yoga, stretching and meditation. Choose Simple mode for quick setups or Advanced mode to build custom interval sequences, then save presets to start any workout instantly. Key features include text-to-speech cues so you always know the next exercise, notification & lock-screen controls, and built-in statistics to set weekly goals and track progress.

The extension pairs with a Wear OS companion app so you can control timers on your wrist, record heart rate during sessions, review heart-rate zones and calories, and transfer saved timers to train without a phone. Privacy-friendly and offline-first: no registration, no ads, no internet required and all data stored locally. Note: some Android devices (e.g., Huawei, Xiaomi, Samsung, OnePlus) require disabling aggressive battery optimization for reliable background timing. A phone-status permission is optional to pause timers on incoming calls.

## Rankings

- #116,972 — Overall
- #24 — timer

## Permissions and access

### Permissions

- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_PHONE_STATE`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.mdev.intervaltimer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users praise Interval Timer for its ad-free, simple interface and strong customization, including presets and rich audio prompts. The main downsides are the cost of premium features, reliability issues reported by some users (timing glitches, background beeps, unexpected resets), and limited wearables/lock-screen support. Overall, the core timer works well for many, especially free users, but value hinges on willingness to pay for extra features.

### Pros

- Ad-free experience with no ads or mandatory videos
- Simple, clean interface and easy-to-use timer controls
- Highly customizable timers with Simple and Advanced modes, plus the ability to save interval presets
- Rich audible feedback: beeps, countdown, and text-to-speech (voice prompts)
- Free version is functional and reliable, with optional paid upgrades for extra features

### Cons

- Premium features are costly (subscription and paid options for saving programs and custom sounds)
- Reliability concerns: reports of glitches, timing errors, and unexpected behavior
- Some features or hardware integrations (watch/lock-screen) are limited or unsupported

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- [Interval Timer](https://chrome-stats.com/d/timerapp.timer_app) — 9,910 users, 4.40 / 5
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- [HIIT Timer - Interval Timer](https://chrome-stats.com/d/com.admasapps.hiittimer) — 1,611 users, 4.14 / 5
- [Workout Interval Timer: HIIT](https://chrome-stats.com/d/com.alexokhmat.intervaltimer) — 344 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.mdev.intervaltimer)