Circuit Trainer is an advanced, yet simple to use timer for both Interval Training.For HIIT you can set your intervals for a short period, for Circuit Training you can set your rest intervals to zero and keep going !Features include:- Add your own timer and workouts, add countdown, number of sets and rest duration.- Add different workout duration for different sets, which is useful for Circuit training. E.g dumbbell curl first set 12 seconds, second set 8 seconds and third set 6 seconds.- Voice assistance to tell you when to start, name of the workout, when to rest, half time etc. - Bell will ring at the start of every exercise.- You can pause, forward and rewind your routines.- Copy workouts from one timer and paste into other Timers.- Statistics page will show your workout history, the month you did the maximum/minimum workout, body mass index graph, weight variations graph and other info.Export to Excel: You can email yourself or friends an excel version of your workout history and statistics for analysis.Backup/Restore: Don't lose your data! You can back up your entire workouts and history and restore when needed. You can even back up from one device and restore your data to a different device.Share your workout details with your friends.Circuit training is a series of exercises performed back to back with no rest. It can be done using moderate to heavy weights and build some great muscles. You can maximize your time with a more efficient workout in a short time frame. You can set the rest intervals to zero in this app for Circuit training.With HIIT you can do high intensity work divided by rest. Both HIIT and Circuit training can maximize muscle burn and calorie burn. This app can also be used for Tabata, Gibala and other interval training.