… to the current weight in the main view, then goes to the percentage view.

Error checking alone is good, but warning the user or logging certain events is suited better to improve code stability and user experience.

Especially the date should be editable.

Relates to issue #3.

There seems to be a bug in the methods oneRM() and/or rm() of Wathen, Mayhew, OConner, Epley and McGlothin.

happens at least on iPhone XS and XR

Create a view with a nice diagram showing the progress of a specific lift.

Replace the hastily drafted app icon with a more beautiful one ;-)

If the user wants to add a lift but no exercise is present in Core Data, send him to Settings/Exercise to add an exercise.

• export user's data to JSON file
• import user's data from JSON file

Deleting an exercise also deletes all associated lifts. So it's a good idea to warn users that they'reabout to delete all lifts that reference that exercise – but only if there actually is a lift that refers to that exercise.

The master view should display exercise, date of lift, 1RM and reps+weight, as already implemented in the log's table view. The detail view should show rating and notes as well.