Sumalo vs EchoGrid
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Sumalo
Engage in a fast-paced mental math challenge using the reduced sum technique. Test your reflexes across eight unique game modes and compete in seasonal rankings to improve focus and calculation speed.
- 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
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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.
EchoGrid
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Read the signal. Hold it in your mind. Rebuild it. EchoGrid is a visual-memory puzzle about reading a pattern of lit cells, keeping it in your head, and recreating it through a spatial rule. How it works: • Watch the signal light up the grid • The board hides • Rebuild the pattern from memory • Each world bends the rule a little more Four spatial worlds: • Echoes — pure recall, rebuild exactly what you saw • Reflections — mirror the pattern left to right • Rotations — turn it 90 degrees • Sequence — remember the order, not just the cells Easy to learn, hard to master. Levels start gentle and grow into a real test of attention and spatial memory. Play your way: • Daily challenges to build a streak • Endless runs that never stop • Track mastery and unlock achievements • Quick sessions or long focus blocks • No account needed Every grid becomes a compact workout for memory, focus, and spatial reasoning. Support: https://srgconsult.ing/products/echogrid/support Privacy: https://srgconsult.ing/products/echogrid/privacy-policy
Screenshots
Verdict
The clearest difference is iOS requirement: Sumalo at 15.0 against EchoGrid's 17.0. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Sumalo | EchoGrid |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Weekly | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 125 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Salamanca Garcia | Sebastian Rodriguez Garcia |
In-app purchases
Sumalo
No in-app purchases
EchoGrid
No in-app purchases









