Comparison

NineGaps vs Booeys

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Unique puzzle gameplay
  • Cute graphics
  • 5 difficulty levels
  • Unlimited puzzles
  • Leaderboards and achievements
  • GameCenter integration
Features
Read 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

About

Booeys

Guide lost souls through challenging puzzle realms using helpful ghosts. Solve intricate puzzles with increasing difficulty across diverse dimensions, mastering new tools and strategies. This game also offers insights into real-world career skills.

Highlights
  • 30+ challenging puzzles
  • Beautiful, dark visual style
  • Master new tools
  • Multiple level completion methods
  • Real-world skill tips
  • Certificate of achievement
Features
Read full description

Use little ghosts called Booeys to guide the Lost out of strange realms in this gorgeous puzzle game! Booeys: A Ghost’s Code invites you to solve a series of complex puzzles with ever increasing difficulty. Each level represents a strange dimension with new challenges to face. As the one who controls the Booeys, you hold the key to helping the Lost escape. Engage in funny banter with Booeys between levels, and learn how your work in helping the Lost can launch you on the path to a successful career … With Booeys: A Ghost’s Code, you’ll experience: ● 30+ challenging puzzles to put your skills to the test ● Beautiful environments with a dark and intriguing visual style ● New tools to master and put to use as you progress ● Different ways of completing each level ● Tips for putting in-game skills to use in the real world ● Certificate of achievement for beating higher levels Booeys: A Ghost’s Code was developed with support from Partner 4 Work to demonstrate the link between gaming and future careers in technology. Booeys engages five aptitudes critical to technical careers: Problem Solving, Logic, Attention to Detail, Understanding Algorithms, and the Ability to Conceive and Build a Solution. If you live in southwestern Pennsylvania and want to learn more about ways to get started on a career in IT, fill out the contact form here: www.booeysgame.com Disclaimer: The certificate issued in this game solely recognizes the player’s in-game performance. Privacy Policy: https://www.simcoachgames.com/privacy

Screenshots

NineGaps4 screens
Booeys4 screens

Verdict

The call

The clearest difference is monetization model: Booeys at free against NineGaps's paid. Booeys also leads on update cadence (every 9 months vs every 26 months). NineGaps's advantage is review sentiment (88% vs 75%) and iOS requirement (10.3 vs 12.0). On price, rating, ratings volume and ads 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

NineGaps holds the better App Store score, 4.1 against 3.9. Both are backed by a comparable volume of ratings — 11 and 16 respectively. Written reviews point the same way: 88% of NineGaps's written reviews are positive against 75% of Booeys's.

UpkeepUpdate frequency

NineGaps ships an update every 26 months, Booeys every 9 months. The most recent releases landed on October 4, 2026 and September 27, 2026 respectively.

Scorecard4 real differences · 6 level
NineGaps versus Booeys: the parameters behind the verdict, then further details
ParameterNineGapsBooeys
PriceFreeFree
Rating4.1 (11 ratings) — better3.9 (16 ratings)
Positive reviews88.1% of reviews — better75.0% of reviews
Number of ratings1116 — better
Update frequencyEvery 26 monthsEvery 9 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.3 — better12.0
Further details — not scored
Size72 MB222 MB
Age rating4+9+
DeveloperQuadion Technologies LLCSimcoach Games

Customer experience

NineGaps

All ratings11 ratings
Positive63.6%
Neutral27.3%
Negative9.1%
Written reviews109 reviews
Positive88.1%
Neutral8.3%
Negative3.7%

Booeys

All ratings16 ratings
Positive68.8%
Neutral6.3%
Negative25.0%
Written reviews8 reviews
Positive75.0%
Neutral12.5%
Negative12.5%

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 more
  • 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 more
  • 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

Booeys

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

NineGaps

No in-app purchases

None

Booeys

No in-app purchases

Questions

Is NineGaps free?
NineGaps is free to download, with no in-app purchases.
Is Booeys free?
Booeys is free to download, with no in-app purchases.
Which has better reviews, NineGaps or Booeys?
NineGaps is rated higher. NineGaps averages 4.1 out of 5 from 11 ratings, while Booeys averages 3.9 from 16 ratings.
Do NineGaps or Booeys have ads?
Neither NineGaps nor Booeys shows ads.
Which is updated more often, NineGaps or Booeys?
NineGaps ships an update every 26 months, and Booeys every 9 months. Most recently, NineGaps was updated on October 4, 2026 and Booeys on September 27, 2026.

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