This app was mentioned in 6 comments, with an average of 1.83 upvotes
It's Brilliant, my recent discovery.
As I have tried many logical apps, this one is so far the best one with a vast community of experts who will explain the solutions in a very straight way. There are also three levels of tasks so that you can find something for yourself.
Oh, and the app doesn't limit just to logical exercises, but math, physics or even machine learning.
Unfortunately, to get the full access, you will need to buy a premium account, but it is totally worth it!
You can get it on:
Brilliant is what you're looking for. Fantastic app