Most grammar apps have a problem: they're boring.
Flashcards, fill-in-the-blanks, multiple choice — rinse and repeat until you lose the will to learn. I've been through enough of them to know. As someone who works with ESL learners, I wanted something different. So we built GrammarBattle — a free iOS game where you learn English grammar by fighting RPG battles.
Here's what the journey looked like and what I learned along the way.
The Problem With "Gamified" Learning
Most educational apps slap a progress bar on a quiz and call it gamification. That's not a game — that's a quiz with a hat on.
Real games have stakes. They have progression that feels earned. You don't just answer questions — you make decisions, manage resources, and face consequences. That's what makes games sticky, and that's what learning apps desperately need.
What We Built
GrammarBattle is an RPG where each battle tests a specific grammar concept. There are 15 topics covering everything from articles and prepositions to all 12 English tenses. You level up from 1 to 23, and the difficulty scales with you.
The key design decisions:
- No lives system — you can always keep playing. Punishing learners for mistakes is counterproductive.
- RPG progression — leveling up feels like an achievement, not just a metric.
- Focused topics — each battle targets one grammar area, so you're not context-switching constantly.
- Free — no paywalls on content. Optional cosmetic IAPs exist but everything educational is accessible.
What I Learned
1. The grammar RPG niche is basically empty
When I researched competitors, I found exactly zero grammar RPG apps on the App Store. Duolingo gamifies broadly. ELSA focuses on pronunciation. Johnny Grammar does quizzes. But an actual RPG built around grammar? Nobody's doing it.
That's both exciting and terrifying. No competition means no validation that people want this.
2. ESL learners are incredibly motivated
The target audience — people learning English as a second language — are some of the most motivated users you'll ever build for. They need English for work, immigration, education. They're not casual browsers. If your app helps, they'll use it daily.
3. Educational content is hard to balance
The RPG part was actually the easier problem. The hard part was making grammar exercises that are challenging enough to be interesting but not so hard they frustrate beginners. We went through many iterations on difficulty curves.
4. App Store discovery for educational games is rough
ASO (App Store Optimization) for educational games is a strange beast. You're competing with both education apps and games, but you don't quite fit either category perfectly. Keywords like "grammar" are dominated by established players with 40K+ ratings.
Try It
If you're curious, GrammarBattle is free on the App Store: gb.ulf.su
We're a tiny team and would genuinely appreciate any feedback — especially from developers who also build educational tools or games. What works? What doesn't? How do you handle the education-vs-entertainment balance in your projects?
Would love to hear from anyone else building in the edtech/gamedev intersection. It's a weird and wonderful space.
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