# Mental Math: Focus Trainer — Brain Train & Speed Math Daily > Daily mental math exercises to improve focus, speed, and mental clarity. (iPhone/iPad app by Denys Kotenko.) - Source: https://appshunter.io/ios/app/mental-math-focus-trainer/id6757860865 (this page in markdown: same URL + `.md`) - Developer: [Denys Kotenko](https://appshunter.io/developer/1869320256) - Category: Education, Health & Fitness - Price: Free with in-app purchases - Rating: 3.50/5 from 4 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.0 · 11 MB - Languages: American English, French (France), German (Germany), Hindi, Russian, European Spanish, Thai, Turkish, Ukrainian, Vietnamese - Released: 2026-01-29 - Data updated: 2026-09-08 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/mental-math-focus-trainer/id6757860865/reviews.md ## What is Mental Math? Train your brain. Sharpen focus. Improve mental speed. Modern life constantly fights for your attention. Notifications, multitasking, and digital noise make it harder to stay mentally sharp. Mental Math: Focus Trainer helps you rebuild focus using short daily mental math training sessions designed to improve concentration, processing speed, and mental clarity. This isn’t about becoming a math expert. It’s about using simple mental math exercises to activate your brain and enter a focused, high-performance state. Just 5 minutes of brain training can reset your attention and prepare you for deep work. HOW IT WORKS Think of it as a quick brain workout. A short session of mental math practice clears mental fog, activates focus, and strengthens your ability to concentrate. Use it: • before a deep work session • before studying • before an important meeting • as a daily brain training habit CORE FEATURES Performance Test (100 Questions) • measure mental speed and accuracy • track completion time • track accuracy • see questions per minute • get an overall performance score Mental Math Training Practice core arithmetic operations with multiple difficulty levels: • addition • subtraction • multiplication • division Choose the difficulty that matches your skill and gradually increase the challenge Custom Exercises Create your own mental math training: • choose operations (+ − × ÷) • choose difficulty levels • choose number of questions Progress Tracking • track mental speed • track accuracy • see progress across different difficulty levels • improve consistency over time Minimalist Design • no distractions • no noisy gamification • clean dark-mode interface WHY TRAIN MENTAL MATH? • improve concentration • boost mental processing speed • prepare your brain for deep work • build a daily focus ritual Reclaim your focus. Train your brain. One number at a time. Terms of Service: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://denyskt-hub.github.io/mental-math ## Key features - Performance testing - Mental math training (add, subtract, multiply, divide) - Customizable exercises - Progress tracking - Minimalist design - Focus improvement ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Pro Monthly: Focus & Mental Math | $3.99 | per month | | Pro Yearly: Focus & Mental Math | $17.99 | per year | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/mental-math-focus-trainer/id6757860865/reviews.md ### 1/5 — Very bad *2026-08-19* Says you are wrong when you are right. And it’s boring **Developer response:** Thank you for writing. We would like to understand what happened, and you are the one person who can tell us. We are finishing an update to how answers are entered, and there is still time to get your case into it. Could you write to us at denys.kotenko@icloud.com and tell us which question it was and exactly what you typed, and where you saw it - on the screen straight after the session, or on the map of your facts? Even from memory, that would point us at the right place. If the app is still on your phone there is more we can work with: open the exercise, tap Progress, then All Data under More, and the list shows every question with the answer that was recorded against it. A screenshot of that tells us in one picture what we would otherwise be guessing at. Thank you for taking the trouble to say it. ## Frequently asked questions about Mental Math ### What is Mental Math: Focus Trainer? 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. ### How does Mental Math: Focus Trainer work? 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. ### What kind of math exercises are included? 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. ### Can I create my own training sessions? Yes, you can create custom exercises by choosing the operations (+, -, ×, ÷), difficulty levels, and the number of questions you want to practice. ### Does Mental Math: Focus Trainer track my progress? 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. ### What makes the design of Mental Math: Focus Trainer unique? 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. ### What are the subscription options for Mental Math: Focus Trainer? 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. ### Is Mental Math: Focus Trainer suitable for all ages? 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. ## Version history (last 5 releases) ### 1.18.2 — 2026-08-29 The Mastery Map showed you which facts you get wrong. Now it shows how they are done. • A fact card names the trick its fact is answered by, and opens the article that teaches it. • It also shows what you actually answered when you got the fact wrong. • Reading about an exercise now sits with the exercise, in its history. • Entering an answer has been reworked, with a keypad laid out the way a calculator is. • Answers can be sent by hand instead of automatically, and the field can show the answer's length. Both in Settings. • Polish and bug fixes. Keep training! ### 1.18.1 — 2026-08-28 The Mastery Map showed you which facts you get wrong. Now it shows how they are done. • A fact card names the trick its fact is answered by, and opens the article that teaches it. • It also shows what you actually answered when you got the fact wrong. • Reading about an exercise now sits with the exercise, in its history. • Entering an answer has been reworked, with a keypad laid out the way a calculator is. • Answers can be sent by hand instead of automatically, and the field can show the answer's length. Both in Settings. • Polish and bug fixes. Keep training! ### 1.18.0 — 2026-08-25 The Mastery Map showed you which facts you get wrong. Now it shows how they are done. • A fact card names the trick its fact is answered by, and opens the article that teaches it. • It also shows what you actually answered when you got the fact wrong. • Reading about an exercise now sits with the exercise, in its history. • Entering an answer has been reworked, with a keypad laid out the way a calculator is. • Answers can be sent by hand instead of automatically, and the field can show the answer's length. Both in Settings. • Polish and bug fixes. Keep training! ### 1.17.0 — 2026-08-16 This update adds the Mastery Map — a picture of what you actually know. • Every fact an exercise can ask, on one board: red where you make mistakes, green where you answer fast and without them, grey where the fact has not come up yet. The map fills in from the answers you have already given. • Open it from the Summary card or from any exercise's history; tap a cell to see how often you were right and how fast. • Learning Mode can now start on the cells you pick. • Facts fade over time, so the map keeps showing what is worth going over again. • Polish and bug fixes. Keep training! ### 1.16.0 — 2026-08-04 This update rebuilds Squares around the trick that solves them — and makes Pro say plainly what it costs. • Squares levels now follow the technique instead of the size of the number: Easy is the table you simply recall, while Medium, Hard and Expert share one round-number trick and differ only in the anchor. • An Easy session covers the whole table — fifteen questions, fifteen bases. • Every Pro benefit is named: Learning Mode, Hard and Expert, Custom Exercises — each with a line saying what it does. • Clearer pricing: what each plan costs and when you're charged. • Polish and bug fixes. Keep training! ## More apps by Denys Kotenko - [DigitAll: Math Puzzle](https://appshunter.io/ios/app/digitall-math-puzzle/id6762447286) - [Docsly: Smart Document Vault](https://appshunter.io/ios/app/docsly-smart-document-vault/id6762974333) - [Ready2Run: HRV Sleep Recovery](https://appshunter.io/ios/app/ready2run-hrv-sleep-recovery/id6789868911) All apps by Denys Kotenko: https://appshunter.io/developer/1869320256 ## Related topics [mindcalc arithmetic trainer](https://appshunter.io/ios/topics/mindcalc-arithmetic-trainer) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-08.*