Simple, effective.
Four default exercise modes and a custom setup area, stop watch with lap timer, rep counter with a single whole-screen tap count, it absolutely helps improve my workouts.

This interval timer offers a straightforward and efficient way to manage your workouts. It supports multiple named sets, unlimited intervals, and provides audio and vibration cues. Ideal for various interval training protocols, it simplifies setup and tracking.
1.1.2
September 18, 2025
The classic Strengthiness Interval Timer back! Built with the latest tools and a few tweaks to ensure the app looks the same across different OS versions. Stay tuned for something completely new coming soon!
MoreStrengthiness Interval Timer is a highly user-friendly interval timer designed for various training protocols like HIIT, Tabata, and CrossFit. It focuses on simplicity and functionality over complex graphics.
This timer is perfect for all forms of timed High Intensity Interval Training, including the Tabata protocol, CrossFit WODs, Sprint 8, and Viking Warrior Conditioning, or any other interval training.
Yes, Strengthiness Interval Timer allows for unlimited intervals and multiple named sets. You can create as many different set lists as you need to suit your specific training routine.
It provides loud beeps and vibration alerts (on supported devices) to signal countdowns, interval completions, and the end of the timer. Different beep patterns are used to differentiate these stages.
Yes, it includes a handy set counter that can be used for sets that are not timed. This helps you keep track of completed sets, especially during recovery periods.
Strengthiness Interval Timer is available for a one-time purchase of $0.99.
Strengthiness Interval Timer is available on the App Store for iOS devices. It is rated for ages 4 and up.
The latest version is 1.1.2, and the app was last updated on September 18, 2025. This indicates a recent update, suggesting ongoing support and development.