Interval timer for iOS & Android

No distractions.
Just intervals.

Build the workout you actually train with, put your phone down, and let clear audio cues keep every round moving.

App Store
No account No ads Local workout data
FourEver running a work interval on iPhone Built by an athlete

Everything you need

Your workout, down to the second.

Quick enough for a four-minute Tabata. Flexible enough for multi-set circuits, boxing rounds, sprints, and your own training structure.

01

Build every phase

Set warm-up, work, recovery, set breaks, cool-down, rounds, and sets. Start from a template or make the session entirely yours.

02

Train without watching

Whistles, gongs, and spoken cues keep you on pace while the screen is locked and your music continues to play.

03

Always in view

Live Activities on iOS Lock Screen and Dynamic Island, plus active Foreground Notification controls on Android keep your session accessible.

04

Start in seconds

Save your timers once, inspect the full sequence, then launch any routine straight from your library.

05

See the work add up

Review sessions by day, week, or month and follow your trained time, completed rounds, and workout streaks.

06

Local & private

Your timers, preferences, and workout history stay on your device. Zero account requirement, zero ads, and zero fluff.

Inside FourEver

Clear when the workout gets hard.

Strong phase colours, at-a-glance progress, and focused controls make the timer easy to read without pulling you out of the session.

FourEver custom timer editor showing workout phases
Every interval, covered.
FourEver saved timer library
Save once, start fast.
FourEver Live Activity showing workout progress
Your workout stays in view.
FourEver workout history with monthly chart and streak
Progress you can see
FourEver timer shown in light and dark appearance
Light and dark modes
FourEver Android rest interval timer
Every interval, covered.
FourEver Android custom timer editor
Save once, start fast.
FourEver Android workout history
Your workout stays in view.
FourEver Android settings and feedback controls
Progress you can see
FourEver Android device color personalization
Light and dark modes
Android Beta Testing

Become a FourEver Beta Tester on Google Play

Be among the first to test FourEver for Android before official release. Follow these 3 simple steps:

1 Join Google Group

Join our Google Testers Group to grant your Google account testing permissions.

1. Join Testers Group ↗
2 Accept Beta Access

Opt-in to the beta program on Google Play to become an official tester.

2. Accept Beta Access ↗
3 Download App

Download and install FourEver directly on your Android device from the Play Store.

3. Download on Google Play ↗

More Apps & Utilities

Other Open-Source Projects

Tools built with the same focus on performance, utility, and user control.

🖱️

Fix4Mac

Open-Source macOS Utility

Independent scroll direction and mouse acceleration control for macOS. Switch instantly between standard pointer acceleration for work and raw 1:1 linear tracking for gaming, while reversing physical mouse wheel scrolling without affecting Trackpad gestures.

  • ⚡ 1-Click Acceleration Toggle: Switch instantly between standard macOS pointer acceleration (Work) and raw 1:1 linear tracking (Gaming).
  • 🔄 Independent Mouse Wheel Reverse: Reverse your physical mouse wheel without affecting Trackpad Natural Scrolling.
  • 💻 Menu Bar Utility: Stays quietly in your menu bar with zero extra window clutter.
Download for macOS (.dmg) View on GitHub