Gript can alert you the moment your rest is over, so you are not staring at a countdown between sets.
Turn timer sounds on or off
- During a workout, tap the gear button to open Workout Settings.
- Under Timer, toggle Sound When Timer Ends.

When the app is in the background
If you switch apps or lock your phone mid-rest, Gript sends a "Rest complete" notification when the timer ends. Make sure notifications are allowed: Profile → Push Notifications.