Mathematical Puzzles and Problems for All Ages is an Android application that offers a collection of over 2000 mathematical puzzles and problems of varying levels of difficulty. Developed by Dmitriy Ogaltsev, this app is an excellent tool for anyone looking to enhance their mathematical skills, whether for fun or to prepare for exams like the EGE.

The app covers a wide range of topics from basic arithmetic to advanced mathematical concepts, and it is suitable for anyone from 2nd grade to 11th grade. The app offers three variants for 2nd grade and 13 variants for other grades. Users can also customize the timer settings in the app's settings.

The app's interface is user-friendly, and the puzzles are engaging and challenging. Users can share their progress with friends and family and even submit feedback and suggestions to the developer. Overall, Mathematical Puzzles and Problems for All Ages is an excellent app for anyone looking to improve their mathematical abilities.