# Grammar Express Question Tag vs Scientific Method

The clearest difference is in-app purchases: Scientific Method at none against Grammar Express Question Tag's 1. Scientific Method also leads on iOS requirement (12.0 vs 15.0). Grammar Express Question Tag's advantage is device support. On price there is nothing between them.

Both are free to download. Grammar Express Question Tag sells 1 one-off in-app purchase. Scientific Method asks for nothing beyond the download.

## The numbers

| Metric | Grammar Express Question Tag | Scientific Method |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/grammar-express-question-tag/id370144113/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 9 MB | 24 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Webrich Software Limited](https://appshunter.io/developer/290203591) | [Science Education Institute](https://appshunter.io/developer/1439710468) |

## What reviewers say

### Grammar Express Question Tag

[App page](https://appshunter.io/ios/app/grammar-express-question-tag/id370144113)

Master the art of using question tags in everyday conversations with this comprehensive grammar course. It offers detailed lessons, numerous examples, and interactive quizzes with real-time feedback to improve your understanding and response times.

**Highlights:** 13+ pages of grammar lessons and rules, Over 69 examples, 500+ multiple-choice questions, Detailed test results with explanations, Retry missed questions module, Customizable timer settings, Randomized questions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Grammar Express QT Full Version | $0.99 | one-time |


### Scientific Method

[App page](https://appshunter.io/ios/app/scientific-method/id6504719782)

**In-app purchases:** none


## Frequently asked questions

### Is Grammar Express Question Tag free?

Grammar Express Question Tag is free to download, with in-app purchases available.

### Is Scientific Method free?

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

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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.*