How to log exercise data of a different date?

[DebChanda]

I want to add exercises done during the previous month, currently the android app/self-hosted instance only allows adding workout of current date.
Is this already a feature which I'm somehow overlooking?

[DuarteSantos8]

Hi, good question!

Right now there's no way to log a workout on a past date manually — the logger always writes to today. That's a fair gap, I've noted it as a feature request.

What you can do today is import a history file: Settings → Import from another app. It reads CSV exports from FitNotes (Android + iOS), Strong and Hevy, plus body weight from an Apple Health XML export. Exercise names are matched against the library, and anything it doesn't recognise is added as one of your own exercises, so nothing in the file gets dropped.

The nice part: you don't actually need one of those apps. The parser reads the columns from the header row, so you can just write the CSV yourself. The FitNotes layout is the simplest:

Date, Exercise, Category, Weight, Weight Unit, Reps
2026-07-14, Bench Press, Chest, 80, kg, 8
2026-07-14, Bench Press, Chest, 80, kg, 7
2026-07-14, Barbell Row, Back, 70, kg, 10
2026-07-16, Squat, Legs, 100, kg, 5

One row per set. Rows sharing a date become one workout. Dates can be 2026-07-14, 14/07/2026 or 14 Jul 2026. Weight Unit can be kg or lbs and gets converted to your profile unit. RPE/RIR and notes columns are read too if you add them.

Before anything is written you get a summary sheet (workouts, sets, exercises matched, exercises created) so you can check it looks right, and the import is merged into your existing history rather than replacing it.

⚠️ Don't confuse this with Import backup — that one takes the app's own JSON export and overwrites everything. For adding past sessions you want Import from another app.

Hope this helps! :)

[DebChanda]

Thanks for the clarification. The suggested work around is sufficient for now.
Let's hope that the feature gets implemented soon.

[GAS85]

I imported all data, then exported backup and edit time stamps and imported it back so that now I can see duration of my trainings in "Recent workouts". However "Activity" section showed nothing, only not imported workouts are shown. I saw there are few additional fields there and magic _tc. So what am I missing here?

My fault - I imported with a wrong date. All good.