Workout Interval Timer

A timer for your workout No frills. Just timing.

Uain lets you build complex interval protocols with nested sets, repeating groups, and configurable rest. Includes pre-built templates for Tabata, HIIT, EMOM, hangboard training, and more. Entirely offline. No account required.

Everything you need, nothing you don't

A focused set of tools for structured workout timing.

Protocol Builder

Build custom timing sequences with nested sets, repeating groups, and configurable rest periods. Supports unlimited nesting depth for complex climbing and training protocols.

Template Library

Ready-to-use templates for Tabata, HIIT, EMOM, Interval, Pyramid, and hangboard 7/3 protocols. Start your workout in seconds.

Precise Timer

Date-based accuracy that remains resilient to backgrounding and interruptions. Countdown, count-up, and open-ended segments keep you on track.

Lock Screen Widget

Keep your timer visible from the lock screen and Dynamic Island with a Live Activity. Check your segment, time remaining, and rest timer without unlocking your phone.

Ready to structure your workout?

Free. No account needed. No data collected. Just a timer that does what you ask.