I love the dark mode color combination with black and orange, including the option for quickly adding top coins, now you are only missing Candy collection from Coingecko
Widget bar is very cool and I like that you can click on coin to see what happened in past and all time high, maybe only some small size corrections should happen in future (slimmer option).
I will test your app in next few days and see if I notice any bugs and problems.

You put a lot of effort in creating this app and you deserve to have some rest.
Happy Holidays!