# NineGaps vs Tangrams Block Puzzles

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.

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

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.

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.

## The numbers

| Metric | NineGaps | Tangrams Block Puzzles |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (10 ratings)](https://appshunter.io/ios/app/ninegaps/id317223443/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/tangrams-block-puzzles/id1252226428/reviews) |
| Number of ratings | **10** | 1 |
| Positive reviews | **88.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 26 months** | Every 52 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 72 MB | 29 MB |
| Requires iOS | **10.3** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Quadion Technologies LLC](https://appshunter.io/developer/317223446) | [Pooja Mehta](https://appshunter.io/developer/1654372941) |

## What reviewers say

### NineGaps

[App page](https://appshunter.io/ios/app/ninegaps/id317223443)

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:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🧠 Excellent brain training and mental math improvement
- 🎮 Simple yet challenging gameplay mechanics
- 🎨 Clean, polished, and attractive visual design
- ⏱️ Quick games perfect for short waiting periods
- 👨‍👩‍👧‍👦 Suitable for multiple age groups and skill levels

**What reviewers complain about**

- 🔊 Loud sound effects that cannot be controlled properly
- 💾 No game saving feature when closing app
- 🧮 Does not follow proper order of operations (PEMDAS)
- 🔴 Occasional crashes or app not opening
- 🎮 Limited replay value after extended play

**Reported bugs**

- 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

**Requested features**

- 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


### Tangrams Block Puzzles

[App page](https://appshunter.io/ios/app/tangrams-block-puzzles/id1252226428)

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:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Unlock All Levels | $0.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*