Chronos Interval
Voice Timer & Garmin Connect
Only for iPhone
Free
iPhone
Chronos is the interval timer built for serious athletes. Design any workout protocol in seconds — HIIT, Tabata, EMOM, AMRAP, circuit training, or custom intervals — then let voice coaching guide you through every round without touching your phone.
VOICE-GUIDED WORKOUTS
Hear interval names, time cues, and round counts spoken aloud so you can stay focused on your reps, not your screen.
GARMIN SYNC
Start a Chronos protocol from your Garmin watch and get full workout data synced back automatically. No phone required mid-session.
BUILT-IN PROTOCOLS
Jump straight in with expert-designed Tabata, AMRAP, and strength circuits — or use the voice input to describe your workout in plain English and get a ready-to-run protocol instantly.
TRACK YOUR PROGRESS
Every session is saved. Review your history, replay favorite workouts, and watch your consistency build over time.
WORKS EVERYWHERE
Your protocols and history sync across all your devices so your training goes wherever you do.
Built by athletes, for athletes. Download Chronos and train smarter.
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The developer, Bo Li, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Contact Info
- Identifiers
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- Bo Li
- Size
- 48.3 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Contests
Contains
Health or Wellness Topics
- Copyright
- © 2026 Twelve Studios