If you love solving puzzles and riddles, then you will love the Mystery Club Calculator app. This app provides you with a challenge every time you use it.
To solve the mystery, you will need to use the clues provided to you within the app. These clues will help you calculate the answer to the puzzle.

https://gamermystery.com/
There are a variety of different puzzles to solve, so you will never get bored. And, if you get stuck on a particular puzzle, you can always ask for help from the community of other users.