Burn21Support
Frequently asked questions
Do I need an account?
No. Burn21 works without an account. Your progress is stored on your device.
Do I need any equipment?
No. Every exercise uses only your body weight. A mat is nice to have for floor exercises.
How do I change the difficulty?
Open a day or workout and choose Easy, Normal or Hard above the exercise list. Your choice is remembered.
Can I skip ahead in the challenge?
Days unlock in order so the plan can build up safely. You can do the standalone workouts at any time.
How are calories calculated?
We use the standard MET formula with the body weight you set in Settings. The result is an estimate.
How do I change the language?
The app uses your device language. You can pick another language in Settings → Language.
How do I reset my progress?
Settings → Reset progress. This deletes completed days and statistics on your device.
Why do I see ads?
Ads keep Burn21 free. An ad is shown when a workout starts. In the EEA and UK you can change your ad choices in Settings → Ad privacy settings.
I feel pain during an exercise.
Stop immediately. Burn21 is not medical advice; please talk to a doctor before continuing.