Interval Timer | Cerov4.0.1
Released September 14, 2026Major
iOS
What changed
- New featureAdaptive HR extends recovery based on target heart rate and provides effort alerts
- New featureTimer Music allows setting default or interval-specific songs
- PlatformSupport for Live Activities and updated Dynamic Island layouts
- PlatformAdded Home Screen widgets, Siri integration, and Shortcuts support
- UXGym Display mode for large screens and TV mirroring
- SocialShare and import timers via file or QR code
- New featureWorkout history tracking and automatic iCloud backups
- PlatformNew lap stopwatch on iPhone; Countdown and Stopwatch apps for Apple Watch
- UXVisual redesign including a new app icon
- PerformanceImprovements to timer reliability, background alerts, and heart-rate connectivity
Original release notes
Your timer can do a lot more now: • Adaptive HR can extend recovery until you reach your target heart rate and guide hard efforts with low and high alerts. • Timer Music lets you choose a default song or set different music for individual intervals. • Live Activities and updated Dynamic Island layouts keep compatible sessions visible and within reach. • Home Screen widgets, Siri and Shortcuts make saved timers quicker to start and control. • Gym Display gives you a clearer view on a large screen or mirrored TV. • Share and import timers with a file or QR code, review completed sessions in workout history, and protect your setup with automatic iCloud backups. • A configurable lap stopwatch is now available on iPhone. Countdown and Stopwatch have also arrived on Apple Watch. • The refreshed design includes a new app icon and improvements to timer reliability, background alerts and heart-rate connections. A useful update for HIIT, Tabata, circuit training and HYROX preparation.