NineGaps vs Rolling Ball
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
Read full descriptionHide full description
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
Rolling Ball
A straightforward slide puzzle game where players move tiles to create a path for a ball to reach its goal. The difficulty increases as you advance through increasingly challenging levels.
- Slide puzzle gameplay
- Create a path for the ball
- Increasing difficulty
- Multiple levels
- Simple controls
Read full descriptionHide full description
Get the ball to the goal! A simple slide puzzle game! Move the tiles to create a path to the goal. It gets harder as you progress through the levels.
Screenshots
Verdict
The clearest difference is ads: NineGaps at none against Rolling Ball's shown. NineGaps also leads on iOS requirement (10.3 vs 13.0). Rolling Ball's advantage is monetization model (ad-supported vs paid) and update cadence (every 12 months vs every 26 months). On price, rating, ratings volume and in-app purchases 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.
On the App Store both sit at effectively the same score — 4.0 for NineGaps against 3.9 for Rolling Ball. Both are backed by a comparable volume of ratings — 10 and 9 respectively.
NineGaps ships an update every 26 months, Rolling Ball every 12 months. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | NineGaps | Rolling Ball |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (10 ratings) — better | 3.9 (9 ratings) |
| Positive reviews | 88.1% of reviews | — |
| Number of ratings | 10 — better | 9 |
| Update frequency | Every 26 months | Every 12 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Paid | Ad-supported — better |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 10.3 — better | 13.0 |
| Further details — not scored | ||
| Size | 72 MB | 100 MB |
| Age rating | 4+ | 4+ |
| Developer | Quadion Technologies LLC | BAF, Ltd. |
Customer experience
NineGaps
Rolling Ball
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
Show 2 moreShow fewer
- 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
Show 9 moreShow fewer
- 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
Rolling Ball
Not enough reviews yet to summarise bugs or requests.
In-app purchases
NineGaps
No in-app purchases
Rolling Ball
No in-app purchases
