Sure thing!
Hmm first of all, tab layout with only 2 pages seems quite empty… if it would be possible i would get rid of tab layout and make it an attached page. Would work exact same way but cleaner and more sfos-way. Tab layout is something you should only use if you reaaaaaaaaaally need it and in case of 2 pages, i don’t think u need it.
Then, i go to add market data and i see oversized font (return it to normal please) and i click on entry to add it. Nothing happens. I click couple more times. Still nothing happens. Then “oh! maybe i need to hold?” and on hold i can add it. Using onHold instead of onClick is quite bad idea because you are adding unnecessary complexity. make it onclick and it will be way simpler, faster and more user friendly.
About page… using textedit and labels like that… it doesn’t look good man. You can use same section names as you had in add market data to separate sections, or look into piepmatz/any of my app’s about page.
Settings, this NOTE text i would make it in the highlight background color, which is dimmer theme color. Hope you know which one i mean.
Add stock page, This code thingy on the right should be aligned to right (have same space as on the left.
But overall, except for tab layout it’s pretty well done! I haven’t got any bad looking apps here yet/