# Burst – Interval Timer — Random beeps and fitness tests

> Random beeps and fitness tests (iPhone/iPad app by Sebastian Orlowski.)

- Source: https://appshunter.io/ios/app/burst-interval-timer/id6760428892 (this page in markdown: same URL + `.md`)
- Developer: [Sebastian Orlowski](https://appshunter.io/developer/1884410907)
- Category: Health & Fitness, Sports
- Price: Free
- Age rating: 4+
- Requires: iOS 16.2 · 40 MB
- Languages: American English
- Released: 2026-03-20
- Data updated: 2026-09-14
- User reviews in markdown: https://appshunter.io/ios/app/burst-interval-timer/id6760428892/reviews.md

## What is Burst?

Burst is an interval timer and a field-test logbook. Free, no account, in 10 languages.

EVERY INTERVAL FORMAT
Work/rest intervals, pyramids, distance sessions, Tabata, HIIT, boxing rounds, circuits. Set durations on a wheel, name the exercises of each round, add a warm-up, and see the total time before you start.

RANDOM BEEPS
Random-cue mode drops unpredictable signals into each work phase, at three intensities. Train reaction: strike on the beep, sprint on the beep, change direction on the beep. A feature you will not find in a standard interval timer.

FIELD TESTS, WITH THE MATH
Léger 20 m shuttle run (beep test), 30-15 Intermittent Fitness Test, Gacon 45/15, Yo-Yo IR1 and IR2, Cooper and half-Cooper, 2 km, T-Test, repeated sprints, BOLT, FTP. Burst runs the exact protocol, then computes your aerobic speed and estimated VO₂max and places you on a benchmark by sex and age.

ONE PHONE FOR THE WHOLE TEAM
In team mode you enter up to 40 names before the test. During the run, tap the name of whoever stops: each athlete gets their own level and aerobic speed, and the ranking goes into the history. Built for PE classes, clubs and strength coaches.

YOUR SESSIONS WITHIN REACH
90 ready-made sessions, sorted by sport and by energy system (VO₂max, threshold, anaerobic, recovery), search, filters, and favorites to bring back your own intervals in one tap.

PROGRESS
The history keeps every session, every test result and how it felt. Your aerobic speed and training paces update with each test.

SIMPLE
One screen per task, digits you can read from three meters, clean sounds, a timer that keeps running with the screen locked. Works offline.

Burst is free and supported by ads. No account, no session data sent anywhere: everything stays on your phone.


## Version history (last 5 releases)

### 1.0.11 — 2026-09-12

A single banner, anchored above the tab bar, and fewer ads loaded for nothing. In a workout's settings, work and rest now carry their phase colour.

### 1.0.9 — 2026-09-07

Wording fixes in several languages. Lighter app.

### 1.0.8 — 2026-09-05

Burst now speaks 10 languages: English, French, Spanish, Portuguese, German, Italian, Chinese, Japanese, Hindi, Indonesian.
Redesigned interface: raised keys, bigger digits, one style from end to end.
Team mode for up to 40 people, with name search during the test.
Clearer end-of-test summary, results and level in one place.
Library search with the session count.
Bug fixes.

### 44 — 2026-08-21

A full redesign of how you build, browse and track your sessions.
• Library: more workouts visible at a glance, filters always in reach, and the search bar folds away when you don't need it
• Favorites: workouts saved from the library are instantly recognizable, with their energy system and duration
• Progress: your level is now spelled out, measured and untested abilities are separated, and your training paces are explained
• Creator: warm-up moved to the top; in Pyramid mode, rest now matches your work time by default; saving a favorite confirms itself and can be undone

### 42 — 2026-05-23

Bug fixes.

## Related topics

[sebastian cooper](https://appshunter.io/ios/topics/sebastian-cooper)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-14.*