# Grammar Ninja vs Fraction Challenge

The clearest difference is ads: Fraction Challenge at none against Grammar Ninja's shown. Fraction Challenge also leads on update cadence (every 2 months vs every 8 months) and ratings volume (1.5K vs 52). Grammar Ninja's advantage is rating (5.0 vs 4.5) and review sentiment (100% vs 70%). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Grammar Ninja sells 6 one-off in-app purchases and Fraction Challenge sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Grammar Ninja holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Fraction Challenge has 1.5K ratings behind it against 52, so its average is the more settled of the two. Written reviews point the same way: 100% of Grammar Ninja's written reviews are positive against 70% of Fraction Challenge's.

Grammar Ninja ships an update every 8 months, Fraction Challenge every 2 months. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Grammar Ninja | Fraction Challenge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (52 ratings)](https://appshunter.io/ios/app/grammar-ninja/id1443711891/reviews)** | [4.5 (1.5K ratings)](https://appshunter.io/ios/app/fraction-challenge/id1499338364/reviews) |
| Number of ratings | 52 | **1.5K** |
| Positive reviews | **100.0% of reviews** | 70.1% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 8 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 179 MB | 89 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Greg Lieberman](https://appshunter.io/developer/1596441353) | [Didactoons Games SL](https://appshunter.io/developer/1457185685) |

## What reviewers say

### Grammar Ninja

[App page](https://appshunter.io/ios/app/grammar-ninja/id1443711891)

Engage in a word game where you identify grammatically correct sentences by targeting specific words with ninja stars. Hone your grammar skills to become a master word ninja.

**Highlights:** Target words in sentences, Identify grammatically correct sentences, Improve grammar skills, Word-based ninja game

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Diamonds | $0.99 | one-time |
| 550 Diamonds | $4.99 | one-time |
| 1200 Diamonds | $9.99 | one-time |
| 2500 Diamonds | $19.99 | one-time |
| 5200 Diamonds | $39.99 | one-time |
| 15000 Diamonds | $99.99 | one-time |

**What reviewers like**

- 👍 Fun and engaging gameplay
- 💡 Educational and improves grammar
- 🚀 Great for all ages
- ✨ Visually appealing graphics
- ✅ Easy to use and understand

**What reviewers complain about**

- ↔️ Limited side-to-side movement on iPad

**Requested features**

- Side-to-side movement for iPad


### Fraction Challenge

[App page](https://appshunter.io/ios/app/fraction-challenge/id1499338364)

Engage in fun math games designed to teach and reinforce fraction operations. Practice addition, subtraction, multiplication, and division of fractions through interactive challenges. Compete with friends in multiplayer mode to boost mental calculation skills.

**Highlights:** Fraction representation, Addition and subtraction of fractions, Equivalent fractions, Fraction reduction, Multiplication and division of fractions, Multiplayer mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get the Full version | $1.99 | one-time |

**What reviewers like**

- 👍 Helps with learning fractions
- 🚀 Fun and engaging game
- 💡 Good for practicing and preparing for tests
- 👍 Competitive and challenging

**What reviewers complain about**

- 🐛 App crashes or doesn't open
- 🕰️ Timer is too fast
- 💰 Not free to play

**Reported bugs**

- App crashes on launch
- Login issues

**Requested features**

- Option to remove timer or increase time
- More game modes (e.g., divided fractions, add/subtract fractions, multiply)
- No battery required to play


## Frequently asked questions

### Is Grammar Ninja free?

Grammar Ninja is free to download, with in-app purchases available.

### Is Fraction Challenge free?

Fraction Challenge is free to download, with in-app purchases available.

### Which has better reviews, Grammar Ninja or Fraction Challenge?

Grammar Ninja is rated higher. Grammar Ninja averages 5.0 out of 5 from 52 ratings, while Fraction Challenge averages 4.5 from 1.5K ratings.

### Do Grammar Ninja or Fraction Challenge have ads?

Grammar Ninja shows ads; Fraction Challenge does not.

### Which is updated more often, Grammar Ninja or Fraction Challenge?

Grammar Ninja ships an update every 8 months, and Fraction Challenge every 2 months. Most recently, Grammar Ninja was updated on November 2, 2026 and Fraction Challenge on November 7, 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.*