# NineGaps vs Math Crossword

The clearest difference is rating: Math Crossword at 5.0 against NineGaps's 4.0. Math Crossword also leads on update cadence (every 3 months vs every 26 months). NineGaps's advantage is in-app purchases (none vs 6) and ratings volume (10 vs 3). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Math Crossword sells 6 one-off in-app purchases. NineGaps asks for nothing beyond the download.

Math Crossword holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 10 and 3 respectively. Written reviews point the same way: 88% of NineGaps's written reviews are positive against 91% of Math Crossword's.

NineGaps ships an update every 26 months, Math Crossword every 3 months. The most recent releases landed on October 31, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | NineGaps | Math Crossword |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (10 ratings)](https://appshunter.io/ios/app/ninegaps/id317223443/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/math-crossword-zerominator/id1246248350/reviews)** |
| Number of ratings | **10** | 3 |
| Positive reviews | 88.1% of reviews | **90.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 72 MB | 5 MB |
| Requires iOS | **10.3** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Quadion Technologies LLC](https://appshunter.io/developer/317223446) | [BrotherSoft](https://appshunter.io/developer/1175755721) |

## 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


### Math Crossword

[App page](https://appshunter.io/ios/app/math-crossword-zerominator/id1246248350)

A number-matching puzzle game where players combine numbers to achieve a zero result. It offers multiple game modes for varied challenges and is suitable for players aged 4 and up.

**Highlights:** Number matching gameplay, Achieve zero result, Multiple game modes, Challenging levels, Suitable for all ages

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 3 Hints | $0.99 | one-time |
| Remove Ads | $0.99 | one-time |
| 10 Hints | $1.99 | one-time |
| 50 Hints | $6.99 | one-time |
| 100 Hints | $8.99 | one-time |
| 1000 Hints | $29.99 | one-time |


## Frequently asked questions

### Is NineGaps free?

NineGaps is free to download, with no in-app purchases.

### Is Math Crossword free?

Math Crossword is free to download, with in-app purchases available.

### Which has better reviews, NineGaps or Math Crossword?

Math Crossword is rated higher. NineGaps averages 4.0 out of 5 from 10 ratings, while Math Crossword averages 5.0 from 3 ratings.

### Do NineGaps or Math Crossword have ads?

Neither NineGaps nor Math Crossword shows ads.

### Which is updated more often, NineGaps or Math Crossword?

NineGaps ships an update every 26 months, and Math Crossword every 3 months. Most recently, NineGaps was updated on October 31, 2026 and Math Crossword on November 2, 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.*