# QuizAI vs Protein Sequence Viewer

The clearest difference is in-app purchases: Protein Sequence Viewer at none against QuizAI's 2. Protein Sequence Viewer also leads on device support (3 vs 1) and iOS requirement (13.0 vs 17.0). QuizAI's advantage is ads (none vs shown). On price and update cadence there is nothing between them.

Both are free to download. QuizAI sells 2 one-off in-app purchases. Protein Sequence Viewer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on October 9, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | QuizAI | Protein Sequence Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quizai-ai-generated-tests/id6502573533/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 2 MB | 25 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Nathan Anthony](https://appshunter.io/developer/1461680419) | [Kazunari Sasaki](https://appshunter.io/developer/1857860050) |

## What reviewers say

### QuizAI

[App page](https://appshunter.io/ios/app/quizai-ai-generated-tests/id6502573533)

Create an unlimited number of practice quizzes on any topic, book, or course. Test your knowledge with timed challenges and save quizzes for later review. Perfect for students and lifelong learners.

**Highlights:** AI-generated quizzes, Topic-based quizzes, Book/course-based quizzes, Difficulty level selection, Timed quizzes, Saved quizzes

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 50 Quizzes | $0.29 | one-time |
| 100 Quizzes | $0.49 | one-time |


### Protein Sequence Viewer

[App page](https://appshunter.io/ios/app/protein-sequence-viewer/id6758012449)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is QuizAI free?

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

### Is Protein Sequence Viewer free?

Protein Sequence Viewer is free to download, with no in-app purchases.

### Do QuizAI or Protein Sequence Viewer have ads?

Protein Sequence Viewer shows ads; QuizAI does not.

### Which is updated more often, QuizAI or Protein Sequence Viewer?

QuizAI ships an update every 2 days, and Protein Sequence Viewer every 2 days. Most recently, QuizAI was updated on October 9, 2026 and Protein Sequence Viewer on October 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.*