Comparison

NineGaps vs Tangrams Block Puzzles

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

Tangrams Block Puzzles

This logic puzzle game challenges players to form specific shapes using Tangram pieces without overlap. It offers a wide variety of shapes and puzzle types to stimulate critical thinking and spatial reasoning skills for hours of fun.

Highlights
  • Form shapes without overlapping pieces
  • Over 35 kinds of shapes (animals, alphabets, etc.)
  • Chinese and European Tangram styles
  • Challenging logic puzzles
  • HD graphics
  • Stimulates critical thinking and geometry sense
Features
Read full description

Form a given shape without overlapping the Tangrams pieces. Complete this logic puzzle and become the Tangram Master! Challenging logic puzzles to stimulate brain. Play with as many Tangram puzzles as possible in a unlimited amount of time. Hours of Fun ahead of you. Features : - Challenging logic puzzles. - More than 35 kinds of shapes: animals, alphabets, numbers, boats, geometry and so on. - Both Chinese Tangram and European Tangram. - Logical puzzles to challenge your mind. - HD graphics that look great on iPads too. A simple and fun logical puzzle game designed to foster critical thinking, spatial rotation skills, and an intuitive sense of geometry..

Screenshots

NineGaps4 screens
Tangrams Block Puzzles4 screens

Verdict

The call

The clearest difference is review sentiment: NineGaps at 88% against Tangrams Block Puzzles's 0%. NineGaps also leads on rating (4.0 vs 1.0) and in-app purchases (none vs 2). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Tangrams Block Puzzles sells 2 one-off in-app purchases. NineGaps asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

NineGaps holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: NineGaps has 10 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 88% of NineGaps's written reviews are positive against 0% of Tangrams Block Puzzles's.

UpkeepUpdate frequency

NineGaps ships an update every 26 months, Tangrams Block Puzzles every 52 months. The most recent releases landed on October 29, 2026 and October 17, 2026 respectively.

Scorecard8 real differences · 2 level
NineGaps versus Tangrams Block Puzzles: the parameters behind the verdict, then further details
ParameterNineGapsTangrams Block Puzzles
PriceFreeFree
Rating4.0 (10 ratings) — better1.0 (1 ratings)
Positive reviews88.1% of reviews — better0.0% of reviews
Number of ratings10 — better1
Update frequencyEvery 26 months — betterEvery 52 months
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS10.3 — better15.6
Further details — not scored
Size72 MB29 MB
Age rating4+4+
DeveloperQuadion Technologies LLCPooja Mehta

Customer experience

NineGaps

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

Tangrams Block Puzzles

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Tangrams Block Puzzles

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

NineGaps

No in-app purchases

2 purchases

Tangrams Block Puzzles

One-time2
  • Remove Ads$0.99
  • Unlock All Levels$0.99

Questions

Is NineGaps free?
NineGaps is free to download, with no in-app purchases.
Is Tangrams Block Puzzles free?
Tangrams Block Puzzles is free to download, with in-app purchases available.
Which has better reviews, NineGaps or Tangrams Block Puzzles?
NineGaps is rated higher. NineGaps averages 4.0 out of 5 from 10 ratings, while Tangrams Block Puzzles averages 1.0 from 1 ratings.
Do NineGaps or Tangrams Block Puzzles have ads?
Tangrams Block Puzzles shows ads; NineGaps does not.
Which is updated more often, NineGaps or Tangrams Block Puzzles?
NineGaps ships an update every 26 months, and Tangrams Block Puzzles every 52 months. Most recently, NineGaps was updated on October 29, 2026 and Tangrams Block Puzzles on October 17, 2026.

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