# GrammarBattle vs DecisionBook

The clearest difference is rating: GrammarBattle at 5.0 against DecisionBook's 4.2. DecisionBook's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price and ratings volume there is nothing between them.

Both are free to download. GrammarBattle sells 2 one-off in-app purchases. DecisionBook asks for nothing beyond the download.

GrammarBattle holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

GrammarBattle ships an update every 6 months, DecisionBook every 4 days. The most recent releases landed on October 30, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | GrammarBattle | DecisionBook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/grammarbattle/id6749281647/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/decisionbook/id6761688754/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Every 4 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 4 MB | 134 MB |
| Requires iOS | 26.0 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ivan Belov](https://appshunter.io/developer/1829815210) | [Srisan LLC](https://appshunter.io/developer/1876433012) |

## What reviewers say

### GrammarBattle

[App page](https://appshunter.io/ios/app/grammarbattle/id6749281647)

Engage in an RPG-style game to improve your English grammar. Battle enemies by answering grammar questions correctly, level up your character, and unlock new tenses. Track your progress and master various English grammar topics.

**Highlights:** RPG-style grammar battles, Level up and collect rewards, Unlock grammar tenses, Boss fights with speed challenges, Progress tracking, Covers various English grammar topics

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.99 | one-time |
| Crystals | $0.99 | one-time |


### DecisionBook

[App page](https://appshunter.io/ios/app/decisionbook/id6761688754)

This app helps high school students navigate the US college admissions process. It provides personalized guidance on requirements, college matches, scholarships, and application tools. Explore majors, compare schools, and get expert advice for a successful application journey.

**Highlights:** Personalized college matching engine, Search 5,000+ US colleges, Major-specific guidance, Scholarship and award finder, Summer program and internship directory, Expert application playbooks, GPA projector and AP checklist

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

**In-app purchases:** none


## Frequently asked questions

### Is GrammarBattle free?

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

### Is DecisionBook free?

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

### Which has better reviews, GrammarBattle or DecisionBook?

GrammarBattle is rated higher. GrammarBattle averages 5.0 out of 5 from 2 ratings, while DecisionBook averages 4.2 from 5 ratings.

### Do GrammarBattle or DecisionBook have ads?

GrammarBattle shows ads; DecisionBook does not.

### Which is updated more often, GrammarBattle or DecisionBook?

GrammarBattle ships an update every 6 months, and DecisionBook every 4 days. Most recently, GrammarBattle was updated on October 30, 2026 and DecisionBook on November 5, 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.*