Like it!
I was looking for something like that, a simple and neat app to write down my surf sessions without the need of an apple watch.
Not enough ratings yet to assess TDiary.
TDiary - Training Diary appears legitimate, with a few gaps. AppsHunter Legitimacy Score for TDiary is 73/100.
Based on 73 of 100 points across 7 verification signals from App Store and developer data.