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Intervals Pro: HIIT Timer

by Intervals, LLC

Build interval workouts with spoken prompts, time or distance goals and workout history.

iOSApple WatchFree with paid upgrades
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What it does

Build interval workouts with spoken prompts, time or distance goals and workout history. A subscription unlocks multiple timers and all features.

Pricing: is Intervals Pro: HIIT Timer free?

US App Store download: Free (USD), checked 2026-09-23. Includes free functionality with optional paid features or plans. Feature availability depends on the tier.

Screenshots

Developer-provided iOS screenshots.

Intervals Pro custom workout feature overview
Intervals Pro custom workout feature overview
Intervals Pro standalone Apple Watch interval workout
Intervals Pro standalone Apple Watch interval workout
Intervals Pro completed workout summary and route
Intervals Pro completed workout summary and route
Intervals Pro timer template selector
Intervals Pro timer template selector

Features

Custom interval workouts

Create named, colored intervals with individual durations, alerts, voice prompts, and countdowns.

Developer’s App Store feature description (iOS)

Time and distance intervals

Build intervals that count down or up by time or distance.

Developer’s App Store feature description (iOS)

Standalone Apple Watch workouts

Run workouts on Apple Watch without the phone and receive voice, sound, and haptic guidance.

Developer’s App Store feature description (iOS)

Health and route tracking

Store workout history in Apple Health with heart rate, calories, distance, pace, and routes.

Developer’s App Store feature description (iOS)

Free timer and subscription

The free download includes one timer; multiple timers and the complete feature set require a subscription.

Developer’s App Store feature description (iOS)

Sources & verification

Last verified: 23 September 2026. Features not listed here may be unverified.

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