Custom interval timer for running, HIIT, hangboard workouts, circuits, and more. Build simple intervals or complex workouts with repeatable sets and nested sections.
Cost / License
- Freemium
- Proprietary
Platforms
- Android




ProtoFit: Workout & HIIT Timer is described as 'ProtoFit: Workout & HIIT timer is a workout timer and tracker app. With its custom exercise parameters, it is the most versatile workout timer suitable for any workout type, including tabata, HIIT, interval training and more' and is an app in the sport & health category. There are more than 10 alternatives to ProtoFit: Workout & HIIT Timer for a variety of platforms, including Android, iPhone, iPad, F-Droid and Android Tablet apps. The best ProtoFit: Workout & HIIT Timer alternative is OpenHIIT, which is both free and Open Source. Other great apps like ProtoFit: Workout & HIIT Timer are TimeR Machine, Workout Time!, Custom Workouts and Interval Timer (PFA).
Custom interval timer for running, HIIT, hangboard workouts, circuits, and more. Build simple intervals or complex workouts with repeatable sets and nested sections.




Exercise timer is a simple utility to conduct interval training. It is built for the GNOME desktop using libadwaita and Relm4.


The first rule of Zombieland; cardio.
HIIT, high intensity interval timer, is a no frills timer for interval training routines, or anything you may need an interval timer for really. You may specify a number of seconds for each active period, a number of seconds for each rest pe.



An interval timer designed for HIIT workouts. Set your active and rest time, and hit go. Simple and easy-to-use.




Converts spontaneous unplanned running sessions of different paces (known as "fartleks") into tracked interval segments providing valuable insights through rich visualisations of workout metrics.








Web timer for kettlebell and steel mace complexes, auto-advancing through custom exercise sequences with audio cues, AI-generated multi-week workouts, EMOM mode, and analytics tracking session volume, progression, and personal records for athletes.




Free online interval timer for HIIT, Tabata, EMOM, AMRAP workouts. Customizable work/rest periods, rounds, cycles, and sounds. Works on any device.

The Norwegian 4x4 App is the perfect companion for anyone looking to implement the 4x4 training protocol into their routine.




LOOK NO FURTHER, you have just found the most advanced interval training timer on the App Store. Seconds has been downloaded over 4 million times, and has over 8000 5-star reviews. Other interval timers don't even come close when it comes to quality, features and ease of use.



