Nice. If you havent seen it, I use 531 calculator religiously and it has a ton of programs on it, and very customizable https://blackironbeast.com/5/3/1/calculator?

Might inspire you as you continue to develop your app

I use stronk (531 BBB) ! Its a damn small world!

I exported most of my data from "Strong" into Stronk, was easy. Thanks !

The interface showed lbs, but my values were all kg, still works.