Forxiv Burst Timer

Forxiv Burst Timer is a straightforward HIIT interval timer built for people who want to stay focused during training without fussing with complicated setups.

You define the number of rounds, the duration of each work phase, and the length of rest periods. Once you start, Forxiv guides you through every interval with clear on-screen cues and vibration feedback so you always know where you are in your session — even when you're not looking at the screen.

Everything is stored locally on your device. No account, no sync, no internet connection required. Just open the app and train.

Key features:
- Customizable rounds, work duration, and rest duration
- Visual phase indicator showing current interval state
- Vibration alerts at each phase transition
- Multiple color themes including light and dark options
- Clean, readable display designed for use during exercise
- Fully offline, no registration required

Whether you're doing bodyweight circuits, kettlebell intervals, or any other timed training format, Forxiv keeps the clock so you can keep moving.