# Study Vision AI 復習ノート vs Thinkzo

The clearest difference is ads: Thinkzo at none against Study Vision AI 復習ノート's shown. Thinkzo also leads on iOS requirement (15.0 vs 17.0). Study Vision AI 復習ノート's advantage is update cadence (every 2 days vs every 11 days). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Study Vision AI 復習ノート sells 2 in-app purchases, starting at $12.99 per month and Thinkzo sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Study Vision AI 復習ノート ships an update every 2 days, Thinkzo every 11 days. The most recent releases landed on October 25, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Study Vision AI 復習ノート | Thinkzo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/thinkzo-ai-homework-helper/id6759196682/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 11 days |
| Monetization | — | Free |
| Size | 6 MB | 51 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [reiko hori](https://appshunter.io/developer/1777370692) | [Gang Wu](https://appshunter.io/developer/1832307850) |

## What reviewers say

### Study Vision AI 復習ノート

[App page](https://appshunter.io/ios/app/study-vision-ai/id6757267244)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Plan | $12.99 | per month |
| PREMIUMプラン | $24.99 | per month |


### Thinkzo

[App page](https://appshunter.io/ios/app/thinkzo-ai-homework-helper/id6759196682)

Instantly solve homework problems by taking a photo. Get step-by-step explanations, generate practice questions, and receive instant AI grading with feedback. Supports multiple languages and subjects for students of all levels.

**Highlights:** AI-powered photo problem solver, Step-by-step solution explanations, Generate custom practice questions, Instant homework grading and feedback, Multi-language support, Privacy editor for sensitive information, Bookmark and save solutions

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Annual | $29.99 | per year |


## Frequently asked questions

### Is Study Vision AI 復習ノート free?

Study Vision AI 復習ノート is free to download, with in-app purchases available.

### Is Thinkzo free?

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

### Do Study Vision AI 復習ノート or Thinkzo have ads?

Study Vision AI 復習ノート shows ads; Thinkzo does not.

### Which is updated more often, Study Vision AI 復習ノート or Thinkzo?

Study Vision AI 復習ノート ships an update every 2 days, and Thinkzo every 11 days. Most recently, Study Vision AI 復習ノート was updated on October 25, 2026 and Thinkzo on October 15, 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.*