Support

Simple 531 is a free, local iPhone workout logger. It requires iOS 17 or later and does not require an account or internet connection.

Protect your history

Open More > Export your data > Save complete backup. Store the JSON file somewhere you control. CSV is intended for spreadsheet analysis and cannot restore the app.

Correct an entry

Open Progress, choose a lift, select the workout, then choose Edit logged workout. Logging bodyweight again for the same date updates that date.

Move to the next wave

Log and finish one workout for each main lift. The Program screen enables advancement after all four are complete. FSL and accessories are optional.

Restore a backup

Open More > Export your data > Restore from backup. The app validates the file and asks for confirmation before replacing current local data.

Contact

For help, bug reports or feature requests, email Martin Januska. Include your iPhone model, iOS version, app version and steps to reproduce the issue. Do not include private workout notes unless needed.