Haha, no problem for the kind words and noticing the bug, also interesting to know what was at fault. (Literally just checked to see if what you said was true and yes you were right but it the app also updated afterwards with the bug fixed so honestly, really cool that that happened.)

I think it is really important to say these kind words and especially and only when they are true. Most people only give feedback in a negative way which is also necessary but can really demotivate creators.

If I had one more feedback thing I could give it would be that the design maybe looks a bit older (in a it uses a design philosophy of idk 5 years ago). I really like it personally though so if you do change things please make it user choice. But I think most people are looking for the really abstract modern design. I can’t fully see what it is but I think it is the lightish blue background and the black seperate elements. Maybe make the background more black and merge the elements and seperate them with a single white line. I still like it but if you apply for a big company and you want to use this for your portfolio, I would think that that would make your app design more attractive. I am not a designer or IT person in any means, my father has a web design company and I just have a great interest in it all, so please take what I say with a grain of salt.

Also, lets say I want full API acces. How would you go about a paid version? A one time payment is be impossible due to the ongoing cost and a subscription seems unlikely. You were probably not planning to do it because of those reasons but I was curious.