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Gymmer SRF app is for users who want to track or time their resting duration in between workout sets or workout exercises. There are 3 buttons to configure your desired time duration. Sometimes workout sets only require 1 minute of resting and exercise requires more than a minute.This App also helps to add metrics to activity rings in your Apple watch. So that, when you do a workout, instead of using Apple's workout app, you can use this app to add the metrics in the Workout app hassle-free.This app is for users who are losing track of their duration of resting and the total duration of the workout