# 絵の英単語 vs Study Timer Study Rainbow

The clearest difference is update cadence: Study Timer Study Rainbow at every 5 days against 絵の英単語's every 4 months. 絵の英単語's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 26.4). On price, ads and in-app purchases there is nothing between them.

Both are free to download. 絵の英単語 sells 3 in-app purchases, starting at $5.49 per month and Study Timer Study Rainbow sells 4 in-app purchases, starting at $0.49 per month. Whichever you choose, the download price is not the number that matters.

絵の英単語 ships an update every 4 months, Study Timer Study Rainbow every 5 days. The most recent releases landed on October 11, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | 絵の英単語 | Study Timer Study Rainbow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (8 ratings)](https://appshunter.io/ios/app/id1485380856/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 63.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free with in-app purchases | — |
| Size | 69 MB | 37 MB |
| Requires iOS | **11.0** | 26.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wisdom Technology Inc.](https://appshunter.io/developer/1281873094) | [Toshiaki Nakamura](https://appshunter.io/developer/822485897) |

## What reviewers say

### 絵の英単語

[App page](https://appshunter.io/ios/app/id1485380856)

Learn English vocabulary through vivid images and intuitive understanding. This app uses brain science and color psychology to enhance memorization and recall, making vocabulary acquisition faster and more effective. It offers various learning modes and test types for all English learners.

**Highlights:** Learn vocabulary with images and concepts, Swipe-based flashcard learning, Multiple test types (multiple choice, listening, writing), Vocabulary sets for TOEIC, Eiken, and university exams, Learn anytime, anywhere, Utilizes brain science and color psychology

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plus会員(1ヵ月) | $5.49 | per month |
| Plus会員(6ヵ月) | $22.49 | per 6 months |
| 1年間Plus会員 | $33.99 | per year |


### Study Timer Study Rainbow

[App page](https://appshunter.io/ios/app/study-timer-study-rainbow/id6780163715)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Student Support Monthly | $0.49 | per month |
| Plus Monthly | $1.99 | per month |
| Student Support Yearly | $5.99 | per year |
| Plus Yearly | $19.99 | per year |


## Frequently asked questions

### Is 絵の英単語 free?

絵の英単語 is free to download, with in-app purchases available.

### Is Study Timer Study Rainbow free?

Study Timer Study Rainbow is free to download, with in-app purchases available.

### Do 絵の英単語 or Study Timer Study Rainbow have ads?

Neither 絵の英単語 nor Study Timer Study Rainbow shows ads.

### Which is updated more often, 絵の英単語 or Study Timer Study Rainbow?

絵の英単語 ships an update every 4 months, and Study Timer Study Rainbow every 5 days. Most recently, 絵の英単語 was updated on October 11, 2026 and Study Timer Study Rainbow on October 6, 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.*