# Abaco - Flash Mental Math — Fast & Easy Mental Math Drill > Flash mental math training app for improving calculation skills with customizable modes. (iPhone/iPad app by Jiwon Park.) - Source: https://appshunter.io/ios/app/abaco-flash-mental-math/id6753171585 (this page in markdown: same URL + `.md`) - Developer: [Jiwon Park](https://appshunter.io/developer/1842841535) - Category: Education, Entertainment - Price: $2.99 - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 13.0 · 42 MB - Languages: Australian English, Arabic, Burmese, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France) and 25 more - Released: 2025-10-08 - Data updated: 2026-08-30 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/abaco-flash-mental-math/id6753171585/reviews.md ## What is Abaco? Abacus Flash Mental Math Training The best flash mental math app to improve your calculation skills anytime, anywhere! Start practicing immediately with default settings or customize everything to your preference. Ideal for mental math competition prep, brain training, and improving math skills. A proven app experienced by over 20,000 users! Key Features: Two Practice Modes • Addition/Subtraction Mode: Step-by-step addition and subtraction practice • Multiplication/Division Mode: Systematic multiplication and division mental training Designed for Abacus Mental Math • Built-in difficulty adjustment algorithm prevents problems from becoming too easy • Subtraction problems are designed so answers never go negative • Division problems always result in whole numbers • Optimized for flash training, similar to abacus competition programs Convenient Customization • Addition/Subtraction Mode: 1-8 digits, 2-200 problems • Multiplication/Division Mode: 1-8 digits × 1-8 digits • Speed control (0.1s-30s) • Custom theme color support • Presets: save and load your favorite settings instantly Multi-language Support • 40+ languages: English, Korean, Japanese, Chinese, Spanish, German, French, and more • Intuitive interface for all languages Recommended for: • Teachers running abacus/mental math schools • Students learning abacus/mental math • Adults seeking brain training • All ages wanting to improve math skills • Those wanting to develop concentration and calculation abilities Experience amazing improvement in mental math skills with just a few minutes of practice daily! ## Key features - Addition/Subtraction practice - Multiplication/Division practice - Adjustable difficulty - Customizable problem settings - Speed control - Multi-language support ## Frequently asked questions about Abaco ### What is Abaco? Abaco is a flash mental math training app designed to improve calculation skills. It offers various practice modes and customization options for users of all ages. ### What math operations does Abaco support? Abaco supports practice in addition, subtraction, multiplication, and division. Subtraction problems are designed to avoid negative answers, and division problems always result in whole numbers. ### Can I customize the practice in Abaco? Yes, Abaco offers extensive customization. You can adjust the number of digits (1-8), the number of problems (2-200), and the speed of presentation (0.1s-30s). ### What is the price of Abaco? Abaco is a paid app, priced at $2.99. It does not have in-app purchases or advertisements. ### Does Abaco have ads? No, Abaco is ad-free. Users can enjoy an uninterrupted experience focused on mental math training. ### What devices is Abaco available on? Abaco is available on Mac, iPhone, iPad, and iPod. It is designed for a seamless experience across Apple devices. ### How often is Abaco updated? The latest version of Abaco is 5.0.16, last updated on June 2, 2026. This indicates regular updates to improve functionality and user experience. ### Is Abaco suitable for young children? Yes, Abaco has an age rating of 4+, making it suitable for young children learning basic math skills, as well as older students and adults. ## Version history (last 5 releases) ### 5.0.16 — 2026-06-02 - Updated answer font options with predictable numeric fonts. - Removed the System font option; older selections now safely use Gamja Flower. ### 5.0.15 — 2026-05-07 - Updated answer font options with predictable numeric fonts. - Removed the System font option; older selections now safely use Gamja Flower. ### 5.0.14 — 2026-05-07 - Rolled back the audio engine to the stable Soloud 3 release. - Improved beep playback reliability during practice. - Reduced sound initialization issues after the recent audio update. ### 5.0.13 — 2026-05-06 - Added an answer font option for clearer numbers. - Improved preset saving guidance and language selector flag display. - UI polish and stability improvements. ### 5.0.12 — 2026-04-01 - Bug fixes and performance improvements ## Apps similar to Abaco | App | Rating | Price | Category | | --- | --- | --- | --- | | [Student Assistant System](https://appshunter.io/ios/app/student-assistant-system/id6740294161) | — | Free | Education | | [Quiz for Studying Math](https://appshunter.io/ios/app/quiz-for-studying-math/id6758671658) | 5.0 (1) | Free | Education | | [SpeedMath Trainer](https://appshunter.io/ios/app/speedmath-trainer/id6741766444) | — | Free | Education | | [StudyCoachAI: Smart Tutor](https://appshunter.io/ios/app/studycoachai-smart-tutor/id6762046276) | — | Free | Education | | [Anzan Flash Soroban Math](https://appshunter.io/ios/app/anzan-flash-soroban-math/id1627090066) | — | $1.99 | Education | | [MindPlay-24](https://appshunter.io/ios/app/mindplay-24/id6742311787) | — | Free | Education | ## More apps by Jiwon Park - [Scannie - Scans To PDF](https://appshunter.io/ios/app/scannie-scans-to-pdf/id6755898639) - [Walnut: Webview Debug & Test](https://appshunter.io/ios/app/walnut-webview-debug-and-test/id6755930250) - [꼬미: 통합 문서 뷰어](https://appshunter.io/ios/app/id6756806731) - [Nball - Bulls and Cows](https://appshunter.io/ios/app/nball-bulls-and-cows/id6759275841) All apps by Jiwon Park: https://appshunter.io/developer/1842841535 --- *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 2026-08-30.*