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Thank you for letting us know. We found what caused this and fixed it in a recent update. If anything still looks wrong, please write to denys.kotenko@icloud.com and we will look into it right away.

Enhance concentration and mental speed with daily mental math exercises. This app offers a minimalist approach to brain training, helping you prepare for deep work, studying, or important meetings. Track your progress and customize sessions to improve focus and cognitive clarity.
1.20.0
September 19, 2026
Measured against your own pace. • A session now ends on what you did: right answers, pace and time. • Performance Feedback, in Profile under During a Session, is now a choice of three: Off, Minimal and Balanced. Balanced compares the session with your usual pace in this exercise and level. • On iPad, screens sit in one centred column. • Polish and bug fixes. Keep training!
MoreUnlock Expert levels, custom exercises & analytics
Thank you for letting us know. We found what caused this and fixed it in a recent update. If anything still looks wrong, please write to denys.kotenko@icloud.com and we will look into it right away.
Mental Math: Focus Trainer is an app designed to improve your focus and mental speed through short, daily mental math exercises. It aims to clear mental fog and activate your brain for better concentration.
The app provides quick brain workouts using mental math practice. These sessions are designed to strengthen your ability to concentrate and prepare you for tasks requiring deep focus.
Mental Math: Focus Trainer includes practice with core arithmetic operations: addition, subtraction, multiplication, and division. You can choose difficulty levels that match your skill and gradually increase the challenge.
Yes, you can create custom exercises by choosing the operations (+, -, ×, ÷), difficulty levels, and the number of questions you want to practice.
The app offers progress tracking for your mental speed and accuracy. You can see your improvement across different difficulty levels and work on building consistency over time.
It features a minimalist design with no distractions or noisy gamification, offering a clean dark-mode interface. This approach is intended to help users avoid distractions and focus on the training.
Mental Math: Focus Trainer offers a Pro Monthly subscription for $3.99 and a Pro Yearly subscription for $17.99. The yearly plan includes a 7-day free trial.
The app has an age rating of 4+, making it suitable for a wide range of users. Its focus on basic arithmetic and cognitive skills can benefit both younger and older individuals.