I didn't read all comments, just searched for "delete" and "remove" without success. My question is, if I can delete a record. I find that quite important, since I just created one called "bla" with nonsense, and then internally panicked slightly. If I try it tomorrow, I will just recycle my record for something useful, so a workaround exists. But I still think, deletion is somewhat crucial.

Apart from that, some other things I stumbled over: - The icon is hard to see on my background, because it contains (too thin) black lines and transparent pixels. Give me some contrast!

- The "House" for "Snap to now" feels unintuitive, but that is subjective. How about a text label, so you don't need an icon?

- That "Calendar" icon for "Select Timerange" as well.

- "Step forward" is one day forward. How about naming it.. more like what it is. A step is a generic thing that might be differently perceived, a day isn't (so much).

- "Start Record" and "New Record" are pretty similar features. I do understand the difference, but I would enjoy more, if those two were simplified into just one in an intelligent way.

- That burger menu is, pardon me, somewhat of a problem. There is so much information. I can see "Install App" in the installed App. "Export" happens there but also on the main screen. Which features belong where? Im missing a hierarchy here.

- Your hint text in the "Manage tags" dialog is too long. Please build it in a way, where I do have to read less words. More like 5 or so (currently there are around 50).

- Is that a refresh button next to the burger menu (left side)? I can click an empty button. Wait, what?

- I really do like that infinite scroll and stuff. Looks cool. On the other hand it is quite easy to get lost. Maybe some snapping on day-level (rather than hour-level) might help.

- Please don't require headings over button groups at all (and then even mix that with my initials!)