# 私辞書 vs echor｜Idea Notes, Book Quotes

The clearest difference is in-app purchases: echor｜Idea Notes, Book Quotes at none against 私辞書's 2. echor｜Idea Notes, Book Quotes also leads on update cadence (weekly vs every 2 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. 私辞書 sells 2 in-app purchases, starting at $1.99 per month. echor｜Idea Notes, Book Quotes asks for nothing beyond the download.

私辞書 ships an update every 2 weeks, echor｜Idea Notes, Book Quotes weekly. The most recent releases landed on September 13, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | 私辞書 | echor｜Idea Notes, Book Quotes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 60 MB | 24 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AOI EMURA](https://appshunter.io/developer/1826834165) | [dannpen](https://appshunter.io/developer/1896768853) |

## What reviewers say

### 私辞書

[App page](https://appshunter.io/ios/app/id6748652770)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月額プラン | $1.99 | per month |
| 年額プラン | $22.99 | per year |


### echor｜Idea Notes, Book Quotes

[App page](https://appshunter.io/ios/app/echoridea-notes-book-quotes/id6771013945)

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

**In-app purchases:** none


## Frequently asked questions

### Is 私辞書 free?

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

### Is echor｜Idea Notes, Book Quotes free?

echor｜Idea Notes, Book Quotes is free to download, with no in-app purchases.

### Do 私辞書 or echor｜Idea Notes, Book Quotes have ads?

Neither 私辞書 nor echor｜Idea Notes, Book Quotes shows ads.

### Which is updated more often, 私辞書 or echor｜Idea Notes, Book Quotes?

私辞書 ships an update every 2 weeks, and echor｜Idea Notes, Book Quotes weekly. Most recently, 私辞書 was updated on September 13, 2026 and echor｜Idea Notes, Book Quotes on September 9, 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.*