# NS viewer vs 読書管理アプリ『ホンメモ』

The clearest difference is review sentiment: 読書管理アプリ『ホンメモ』 at 82% against NS viewer's 33%. 読書管理アプリ『ホンメモ』 also leads on update cadence (every 2 days vs every 6 months). NS viewer's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. 読書管理アプリ『ホンメモ』 sells 2 in-app purchases, starting at $2.99 per month. NS viewer asks for nothing beyond the download.

NS viewer ships an update every 6 months, 読書管理アプリ『ホンメモ』 every 2 days. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | NS viewer | 読書管理アプリ『ホンメモ』 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | **82.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 days** |
| Monetization | **Free** | Freemium |
| Size | 2 MB | 144 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TOSHINSHA, K.K.](https://appshunter.io/developer/927331631) | [Rikuto Sato](https://appshunter.io/developer/1492548460) |

## What reviewers say

### NS viewer

[App page](https://appshunter.io/ios/app/ns-viewer/id1455073743)

Access and read digital content from subscribed electronic services on your iPhone or iPad. Enjoy a simple vertical scrolling experience with zoom and screen rotation features for comfortable viewing anytime, anywhere.

**Highlights:** Access subscribed digital content, View on iPhone and iPad, Simple vertical scrolling, Zoom functionality, Screen rotation

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

**In-app purchases:** none


### 読書管理アプリ『ホンメモ』

[App page](https://appshunter.io/ios/app/id1612266128)

This app helps you manage the knowledge gained from books, not just the books themselves. You can collect your books, take notes on specific pages or add images, and quickly register books using barcode scanning.

**Highlights:** Manage knowledge from books, Collect books, Page-specific notes, Image notes, Barcode book registration

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ホンメモ PRO  月額 | $2.99 | per month |
| ホンメモ PRO  年額 | $29.99 | per year |


## Frequently asked questions

### Is NS viewer free?

NS viewer is free to download, with no in-app purchases.

### Is 読書管理アプリ『ホンメモ』 free?

読書管理アプリ『ホンメモ』 is free to download, with in-app purchases available.

### Do NS viewer or 読書管理アプリ『ホンメモ』 have ads?

Neither NS viewer nor 読書管理アプリ『ホンメモ』 shows ads.

### Which is updated more often, NS viewer or 読書管理アプリ『ホンメモ』?

NS viewer ships an update every 6 months, and 読書管理アプリ『ホンメモ』 every 2 days. Most recently, NS viewer was updated on October 9, 2026 and 読書管理アプリ『ホンメモ』 on October 8, 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.*