# Sumalo: Fast Mental Math — Duels, leagues and puzzles > Competitive mental math game using the reduced sum technique. (iPhone/iPad app by Daniel Salamanca Garcia.) - Source: https://appshunter.io/ios/app/sumalo-fast-mental-math/id6762127607 (this page in markdown: same URL + `.md`) - Developer: [Daniel Salamanca Garcia](https://appshunter.io/developer/1893035879) - Category: Games, Education, Casual, Puzzle - Price: Free - Rating: 5.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 137 MB - Languages: European Spanish - Released: 2026-04-30 - Data updated: 2026-08-19 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/sumalo-fast-mental-math/id6762127607/reviews.md ## What is Sumalo? Test your mental math skills and compete against other players in fast-paced challenges. Sumalo is a competitive mental math game built around speed, accuracy, and strategy, with online duels, multiple game modes, leagues, seasons, rankings, achievements, and rewards. The rules are easy to learn and hard to master: solve each operation and reduce the result to a single digit from 1 to 9. For example: 8 + 7 = 15 → 1 + 5 = 6. The faster and more accurate you are, the more points you earn. MENTAL MATH DUELS Challenge your friends or find an opponent in asynchronous matches. Each player can complete the duel at their own pace while both face the same challenge. Win matches, increase your ELO rating, and climb the global rankings. GAME MODES • Classic: speed and accuracy in the original Sumalo experience. • Beat the Clock: earn the highest score before time runs out. • Guess the number: find the missing number in the operation. • Scale: compare both sides and choose the correct answer. • Chain: solve sequences where each result depends on the previous one. • Outsider: find the false result or the only correct one. • Survival: protect your three lives and go as far as you can. • Mission: reach the target score before time runs out. LEAGUES, SEASONS, AND PROGRESSION • Move up through the leagues and fight for the top positions. • Take part in seasons with different modes and objectives. • Review your accuracy, response time, and winning streak statistics. • Compete in the global rankings and prove your skill. ACHIEVEMENTS AND REWARDS Complete challenges to unlock achievements, badges, and trophies. Earn coins through victories and progression, visit the in-game store, and expand your inventory with new items. WHY PLAY SUMALO? • Quick matches designed to play at any time. • Duels against friends and other players. • Varied modes for practicing mental math, logic, and focus. • Competitive progression with ELO, leagues, seasons, and rankings. • Achievements, statistics, rewards, and inventory. • A different take on math games and number puzzles. Sumalo is made for players who enjoy numbers, brain challenges, and competition. Learn the digital root mechanic, beat your best scores, and conquer every season. ## Key features - Reduced sum technique - Eight unique game modes - Seasonal rankings and ELO system - Real-time duels with friends - Detailed performance statistics - Cognitive training for focus and memory ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/sumalo-fast-mental-math/id6762127607/reviews.md ### 5/5 — Great Game for Your Mind *2026-05-23* It’s rare to find a game that’s both fun and challenging. If you are looking for an active way to exercise your brain with a healthy dose of competition, this game is for you! ## Frequently asked questions about Sumalo ### What is the main concept behind Sumalo? Sumalo's core concept is the '1 to 9 Rule,' where players reduce any mathematical operation to a single digit between 1 and 9. This technique challenges rapid calculation and processing power. ### How does Sumalo help improve mental math skills? Sumalo offers cognitive training by improving focus, memory, and mental agility through its fast-paced gameplay. Users can see improvements in just 5 minutes a day. ### What are the different game modes in Sumalo? Sumalo features eight distinct game modes: Classic, Time Attack, Guess It, Scale, Chain, Outsider, Survival, and Mission, each offering a unique challenge to test different aspects of mental math. ### How does the competitive ranking system in Sumalo work? Sumalo uses an ELO system and leagues to match players of similar skill levels. Rotating seasons reset rankings, providing a fresh opportunity to climb the global leaderboard and compete for the top spots. ### Can I play Sumalo offline? The provided data does not specify whether Sumalo supports offline play. For modes involving real-time duels or seasonal rankings, an internet connection is likely required. ### Is Sumalo suitable for children? Yes, Sumalo is rated for ages 4+ and is perfect for kids who want to master mental arithmetic. Adults can also use it to keep their minds sharp. ### How often is Sumalo updated? Sumalo was last updated on June 21, 2026, indicating a recent update. The developer, Daniel Salamanca Garcia, appears to be actively maintaining the application. ### Does Sumalo have ads? No, Sumalo is ad-free. The application does not contain advertisements, ensuring a smooth and distraction-free experience for users. ## Version history (last 5 releases) ### 0.7.5 — 2026-08-17 • Improved leagues and rankings: new group system, optimized navigation and improvements to player standings. • New season rewards: earn exclusive prizes at the end of each season. • More avatars: new designs and visual improvements to existing ones. • Better performance: optimizations for a smoother experience, especially on older devices. • Improved support for smaller screens and devices. • Fixed issues with profiles, aliases, statistics, achievements and daily streaks. • Fixed navigation and in-game control issues. • Improvements and fixes to bonuses, polls and other visual elements. Thanks for playing SUMALO! We're making the game better with every update. ### 0.7.4 — 2026-07-25 This update continues improving SUMALO’s stability and overall experience: • Fixed several navigation, dialog, and duel-related issues. • Improved opponent search and challenges. • Adjusted surveys to provide a more progressive experience. • Rebalanced Survival mode at higher difficulty levels. • Added general visual, performance, and stability improvements. Keep competing, unlocking achievements, and conquering every season! ### 0.7.3 — 2026-07-22 This update focuses on fixes and stability improvements: • Fixed several navigation and dialog issues. • Improved the game mode selector in the tutorial. • Adjusted response times for certain operations. • Enhanced the slot machine with new icons and features. • Fixed visual issues in profile statistics. • Added internal performance and analytics improvements to keep optimizing the experience. Keep competing, unlocking achievements, and conquering every season! ### 0.7.2 — 2026-07-18 Sumalo keeps evolving! In this 0.7.2 version, we optimize your competitive experience while cementing the major features from our recent big update. • Optimized performance: Much smoother gameplay matches and enhanced tactile response. • Your feedback matters: Integrated in-app surveys so we can keep building and improving the game together. • Rate us!: Added a quick internal dialog so you can easily rate and share your thoughts about the app. Recap of our major update (v0.7.0/v0.7.1): • New Achievements System: Collect trophies, unlock unique badges, and earn rewards with your victories. • Quick access to "My Seasons" directly from the main menu to track your milestones faster. • Previous season summary upon opening the app and upgraded advanced statistics. • Fine-tuned balance adjustments in Survival and Mission modes. • Bug Fixes: Fixed achievement color palette readability and resolved the duel summary reward notification glitch. Thank you for training your brain with Sumalo! If you love the game, please leave a review—it helps us immensely! ### 0.7.1 — 2026-07-11 Sumalo keeps getting better! In this update, we reinforce our major achievements system and patch minor bugs for a seamless experience. What's New & Improvements: New "My Seasons" shortcut added directly to the home screen player menu for quicker access. Brand New Achievements System (v0.7.0): Collect trophies, badges, and unlock unique rewards. Previous season summary upon opening the app and enhanced advanced stats. Fine-tuned balance updates for Survival and Mission modes. Bug Fixes: Fixed color scheme issues on the achievements screen for better visibility. Resolved a bug in the duel summary screen where unlocked achievement rewards wouldn't mark as read. Thank you for playing Sumalo! Leave us a review if you love training your brain with us. --- *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 2026-08-19.*