THE ULTIMATE INTERVAL TIMER.

Beast Mode On is a free interval timer app designed for HIIT, Tabata, strength training, boxing, yoga, running, EMOM, and any custom interval workout. Unlike other timer apps that limit you to basic countdown timers, Beast Mode On lets you build any workout from scratch — add exercises, rest periods, and repeat rounds in any combination. It features a hands-free background timer with lock screen notifications, voice assist, calorie tracking, and full workout history. Available on both iOS and Android with a 14-day free trial of all pro features.

Creating a custom interval workout in Beast Mode On takes seconds. Tap the + button on the home screen to open the workout builder. Add Exercise intervals (like burpees, squats, or any movement), Rest periods and rest timer intervals between sets, and Repeat rounds to loop your circuit. You can name each exercise, set custom durations, and build complex circuit training workouts and multi-circuit sessions with different exercises in each round. Your workout time updates automatically as you build. Hit Start and the big, bold countdown timer takes over — you just follow along.

Yes — Beast Mode On is built for hands-free training. Once you start a workout, the interval timer and workout timer runs in the background with full control from your lock screen. You can see your current exercise, the countdown timer, and what exercise is up next, all from your notification bar. It works seamlessly alongside Spotify, Apple Music, podcasts, or any audio app. Lock your phone, put it in your pocket, and just train.

Beast Mode On is the most versatile interval timer and exercise timer available. It supports Tabata training (20/10 intervals), HIIT circuits, strength training with sets and rest, boxing round timers, yoga flow sequences, EMOM (Every Minute on the Minute) workouts, 10K run intervals with warm-up and cool-down, sprint interval training, cardio circuits, and any custom interval workout you can imagine. If it has a work phase and a rest phase, Beast Mode On can time it. Use it as a workout timer, exercise timer, rest timer, or circuit training timer for any fitness routine.

Beast Mode On starts with a 14-day free trial where you get full access to every feature — unlimited workouts, the workout builder, background timer, voice assist, and workout history. After your trial, you can continue with the free tier or unlock lifetime pro access for a one-time payment of $4.99. No subscription. No recurring charges. No hidden fees. Most competing interval timer and exercise timer apps charge $3-10 per month — Beast Mode On is a one-time purchase forever.

Tabata is a specific type of HIIT (High-Intensity Interval Training). Classic Tabata follows a strict 20 seconds of work, 10 seconds of rest, repeated for 8 rounds (4 minutes total). HIIT is broader and can include any combination of high-intensity exercise intervals and rest periods — like 40 seconds on, 20 seconds off, or circuits with different exercises. Beast Mode On supports both: use the Classic Tabata preset for the traditional protocol, or build your own custom HIIT circuit with any exercises, durations, and rounds you want.