# AI チャット アプリ vs Test Study AI

The clearest difference is review sentiment: Test Study AI at 67% against AI チャット アプリ's 5%. Test Study AI also leads on update cadence (every 8 days vs every 3 weeks). AI チャット アプリ's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. AI チャット アプリ sells 2 in-app purchases, starting at $5.99 per 7 days and Test Study AI sells 6 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AI チャット アプリ ships an update every 3 weeks, Test Study AI every 8 days. The most recent releases landed on September 25, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | AI チャット アプリ | Test Study AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (5 ratings)](https://appshunter.io/ios/app/ai/id1661881078/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 5.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 8 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 10 MB | 30 MB |
| Requires iOS | **15.0** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [CapCat LLC](https://appshunter.io/developer/1654095841) | [Kazumasa Shimomura](https://appshunter.io/developer/1110502851) |

## What reviewers say

### AI チャット アプリ

[App page](https://appshunter.io/ios/app/ai/id1661881078)

This AI-powered chat application provides instant text responses to your questions. Ask anything you're curious about and receive immediate answers. A VIP plan offers unlimited questions and chat categorization.

**Highlights:** AI-powered instant responses, Ask any question, Unlimited questions (VIP), Chat categorization (VIP), Subscription plans available

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI Professional | $5.99 | per 7 days |
| ChatGPT PRO Trial | $9.99 | per 7 days |


### Test Study AI

[App page](https://appshunter.io/ios/app/test-study-ai-notes-to-quiz/id6448994105)

Transform your handwritten notes and handouts into effective study materials. This AI-powered tool generates summaries, flashcards, and quizzes from photos of your study content, helping you memorize and test your knowledge.

**Highlights:** Photo to study material conversion, AI-generated summaries, Red-sheet memorization cards, Quick quiz generation, Follow-up question support, 24/7 availability

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアムプラン | $1.99 | per 7 days |
| コインパック10pt | $0.99 | one-time |
| コインパック50 + 5pt | $2.99 | one-time |
| コインパック120 + 30pt | $5.99 | one-time |
| コインパック280 + 80pt | $11.99 | one-time |
| コインパック600 + 200pt | $22.99 | one-time |


## Frequently asked questions

### Is AI チャット アプリ free?

AI チャット アプリ is free to download, with in-app purchases available.

### Is Test Study AI free?

Test Study AI is free to download, with in-app purchases available.

### Do AI チャット アプリ or Test Study AI have ads?

Neither AI チャット アプリ nor Test Study AI shows ads.

### Which is updated more often, AI チャット アプリ or Test Study AI?

AI チャット アプリ ships an update every 3 weeks, and Test Study AI every 8 days. Most recently, AI チャット アプリ was updated on September 25, 2026 and Test Study AI on September 21, 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.*