Interval Timer ⚡ HIIT Timer

What It Does

Interval Timer is a streamlined interval training app designed for high-intensity interval training (HIIT), circuit workouts, Tabata, strength training, and any fitness routine that requires timed work and rest periods. The app provides an intuitive drag-to-set interface that lets you quickly customize workout intervals, rest periods, and rounds without complicated menus or settings.

Who It's For

This app is perfect for athletes, fitness enthusiasts, personal trainers, and anyone following structured workout programs. Whether you're doing 10-second on/off intervals for injury recovery, standard HIIT sessions, or complex circuit training routines, Interval Timer adapts to your needs. It's particularly valuable for users who get lost in reps and rounds or need audio cues to stay focused during intense workouts.

Key Features & Capabilities

• Simple Setup: Drag-to-set custom intervals for workout time, rest periods, and number of rounds
• Audio Guidance: Choose between voice or beep notifications for every interval, including halfway markers even for short intervals
• Background Operation: Continues working when you leave the app, so you can follow online workouts or use other apps while listening to audio cues
• Music Integration: Doesn't interfere with your music apps—keep your workout playlist running
• Exercise Naming: Name individual exercises to keep track of what comes next in your routine
• Automatic Tracking: Detailed history and statistics pages record every workout automatically
• Workout Repetition: Easily repeat previous workouts from your history without resetting timers
• Flexible Warmup Options: Configurable warmup periods to prepare for your workout

Typical Workflows

Users typically create a custom workout by setting their work interval (e.g., 30 seconds), rest period (e.g., 15 seconds), and number of rounds. They can name specific exercises for complex circuits, tap to start, and let the app guide them through the entire session with audio cues. The app runs in the background, allowing users to watch tutorial videos or check form guides while still hearing timing notifications. After completion, workouts are automatically logged to track progress over time.

What Differentiates It

Interval Timer stands out for its exceptional simplicity and elegant design, earning a 4.8-star rating from over 87,000 users. Unlike cluttered fitness apps, it focuses exclusively on what matters: accurate timing and unobtrusive guidance. The halfway notification feature—even for intervals as short as 10 seconds—is particularly praised by users. The app's ability to run in the background while maintaining audio cues makes it uniquely versatile for following online workouts or multitasking during training sessions.