Quickonor by Tetonor

Add and multiply numbers proposed or to be guessed.
Use your deduction skills and show strategy to solve a 6 or 8 boxes grid by finding the right operations.
A free challenge is offered daily, with the possibility of publishing your score.
Different subscriptions allow you to adjust the difficulty to your liking.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/