NineGaps vs Mathris
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
NineGaps
This is a challenging puzzle game where you place numbers 1-9 into gaps, matching operations. It offers a unique twist on number puzzles with multiple difficulty levels and endless replayability.
- Unique puzzle gameplay
- Cute graphics
- 5 difficulty levels
- Unlimited puzzles
- Leaderboards and achievements
- GameCenter integration
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Featured by Apple as "Best Math Puzzle Game" and "New and Noteworthy" NineGaps is a highly addictive and tricky puzzle game. The goal of the game is really simple. You have to use your wits to place numbers from 1 to 9 in the missing gaps, while matching the operations presented in the puzzle. It's just like sudoku, but different! FEATURES: • simple and unique puzzle-based gameplay • cute graphics • 5 difficulty levels • unlimited brain burning puzzles • global and friend leaderboards • achievements • GameCenter integration • highly addictive and fun! Fans of Sudoku, KenKen and TwentyFour will feel right at home! Test your puzzle cracking skills with NineGaps today! PRESS REVIEWS: ..."sudoku-style puzzle game featuring a clever twist", Macworld ..."polished, fantastic looking iPhone app that anyone can enjoy", MacYourself ..."there is no reason this great puzzle app shouldn't be downloaded today", AppModo ..."with random boards the replayability is pretty much endless", In Touch Reviews ..."simple game with a simple design and does it simply perfect", GameZebo ..."make way for another highly addictive game coming out for your iPhone", Mobilewhack ..."great for all ages whether you want a math refresher or a fun way to teach kids math skills", The AppPodcast ..."this is a simple looking brain burning challenger", iPhone Footprint ..."sudoku meets calculator, has baby, calls it NineGaps", Mobile Game Faqs ..."highly addictive puzzle game", iPhone Toolbox ..."fun and challenging", AppChatter ..."easy to pick up and hard to put down", iPhone App Reviews CONTACT US - Visit us: ninegapsapp.com - Follow us: twitter.com/quadionTouch - Become a fan: facebook.com/pages/Quadion-Technologies/65161686424 Check out our other exciting games: Rune Trails and Wordweaver
Mathris
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Mathris is a fun combination of mathematics learning game and match-3 mechanic for kids and adults. WHO CAN PLAY The game has three difficulty levels, so it's suitable for kids as well as for adults. HOW TO PLAY The goal is to match the same numbers in a raw or in a column by applying mathematical operations with numbers. You can chose a raw or a column to modify. The bigger number you match the more points you get. But be careful if you get a number higher than 50 the game will be over. Challenge yourself everyday! Mathematics is one of the best subject and a good practice for the brain. Brain games are very fun and useful for everyone.
Screenshots
Verdict
The clearest difference is ads: NineGaps at none against Mathris's shown. NineGaps also leads on iOS requirement (10.3 vs 15.0). Mathris's advantage is update cadence (every 5 weeks vs every 26 months). On price, 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.
NineGaps ships an update every 26 months, Mathris every 5 weeks. The most recent releases landed on October 22, 2026 and October 15, 2026 respectively.
| Parameter | NineGaps | Mathris |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (10 ratings) — better | — |
| Positive reviews | 88.1% of reviews | — |
| Number of ratings | 10 — better | — |
| Update frequency | Every 26 months | Every 5 weeks — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.3 — better | 15.0 |
| Further details — not scored | ||
| Size | 72 MB | 204 MB |
| Age rating | 4+ | 4+ |
| Developer | Quadion Technologies LLC | Nikita Ivanov |
Bugs and requests
NineGaps
Reported bugs
7 issues- Sound effects stop working intermittently
- App crashes or fails to open on launch
- Sound volume settings not saving between sessions
- OpenFeint achievements not awarding properly
- Mathematical calculation errors in some puzzles
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- Unsolvable puzzle generation reported
- Incorrect answer validation (marking correct answers as wrong)
Requested features
14 requests- Solution/reveal button to show answers when stuck
- Hint system for difficult puzzles
- Game auto-save functionality
- Persistent sound settings across sessions
- Global leaderboards for competition
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- Multiplayer mode or WiFi challenges
- Larger grids (4x4, 5x5) for increased difficulty
- Puzzle numbering system for tracking progress
- Ability to view completed games
- Confirmation dialog before resetting high scores
- Brackets/parentheses support in equations
- Higher difficulty levels for advanced players
- More game modes and variations
- Improved color contrast for colorblind users
Mathris
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NineGaps
No in-app purchases
Mathris
No in-app purchases









