Grammar Ninja vs Fraction Challenge
Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.
Grammar Ninja
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.
- Target words in sentences
- Identify grammatically correct sentences
- Improve grammar skills
- Word-based ninja game
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Your mission is to throw ninja stars at words! These words are sneaky and have hidden themselves in grammatically correct sentences. Use your grammar skills to find your targets, and become the ultimate ninja master!
Fraction Challenge
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.
- Fraction representation
- Addition and subtraction of fractions
- Equivalent fractions
- Fraction reduction
- Multiplication and division of fractions
- Multiplayer mode
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Learn to do operations with fractions with this fun app. Here you will find a lot of educational games of mental calculation to learn and reinforce mathematical concepts, such as the representation of fractions, addition and subtraction with the same and different denominator, multiplication and division of fractions, equivalent fractions and reduction of fractional numbers. ENJOY THE MULTIPLAYER MODE! With this educational game you can play alone or in company, as it features a multiplayer mode. Challenge your classmate and become the fastest one in arithmetics, solving the different mathematical activities. BECOME THE KING OR QUEEN OF ARITHMETICS AND MENTAL CALCULATION! With just a few minutes a day you can improve your math level and beat your own records. THE IMPORTANCE OF FRACTIONS IN OUR DAILY ROUTINE Fractions are not only used as a concept in the subject of mathematics for children; they are necessary in order to perform various actions of daily life. For example: when buying food, it is normal to go to the supermarket and order ½ kilogram of apples. Measuring ingredients in the kitchen, buying fabrics or many other everyday things are solved with fractional numbers. EDUCATIONAL GOALS - Representation of fractions. - Addition and subtraction of fractions with a common denominator. - Equivalent fractions. - Fraction reduction. - Multiplying and dividing fractional numbers COMPANY: Didactoons Games SL Recommended age: For primary and secondary school children, 7 to 16 years old. Theme: Multiplayer game to learn arithmetic and mental calculation. CONTACT We want to know your opinion! Please share with your questions, technical problems, suggestions and everything you want with us. Write to us via our contact form: https://www.didactoons.com/contact/
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Grammar Ninja | Fraction Challenge |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (52 ratings) — better | 4.5 (1.5K ratings) |
| Positive reviews | 100.0% of reviews — better | 70.1% of reviews |
| Number of ratings | 52 | 1.5K — better |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 | 13.0 |
| Further details — not scored | ||
| Size | 179 MB | 89 MB |
| Age rating | 12+ | 4+ |
| Developer | Greg Lieberman | Didactoons Games SL |
Customer experience
Grammar Ninja
Fraction Challenge
User reviews
Grammar Ninja
From 52 App Store ratingsWhat we love
- 👍 Fun and engaging gameplay
- 💡 Educational and improves grammar
- 🚀 Great for all ages
- ✨ Visually appealing graphics
- ✅ Easy to use and understand
Room to improve
- ↔️ Limited side-to-side movement on iPad
Fraction Challenge
From 1.5K App Store ratingsWhat we love
- 👍 Helps with learning fractions
- 🚀 Fun and engaging game
- 💡 Good for practicing and preparing for tests
- 👍 Competitive and challenging
Room to improve
- 🐛 App crashes or doesn't open
- 🕰️ Timer is too fast
- 💰 Not free to play
Bugs and requests
Grammar Ninja
Requested features
1 request- Side-to-side movement for iPad
Fraction Challenge
Reported bugs
2 issues- App crashes on launch
- Login issues
Requested features
3 requests- Option to remove timer or increase time
- More game modes (e.g., divided fractions, add/subtract fractions, multiply)
- No battery required to play
In-app purchases
Grammar Ninja
- 100 Diamonds$0.99
- 550 Diamonds$4.99
- 1200 Diamonds$9.99
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- 2500 Diamonds$19.99
- 5200 Diamonds$39.99
- 15000 Diamonds$99.99
Fraction Challenge
- Get the Full version$1.99
Questions
Is Grammar Ninja free?
Is Fraction Challenge free?
Which has better reviews, Grammar Ninja or Fraction Challenge?
Do Grammar Ninja or Fraction Challenge have ads?
Which is updated more often, Grammar Ninja or Fraction Challenge?
Other comparisons
