# ComicPDFReader vs 密密本 Pocket Book

The clearest difference is in-app purchases: ComicPDFReader at none against 密密本 Pocket Book's 1. ComicPDFReader also leads on device support (3 vs 1). 密密本 Pocket Book's advantage is update cadence (every 2 days vs every 3 months). On price, ads and iOS requirement there is nothing between them.

Both are free to download. 密密本 Pocket Book sells 1 one-off in-app purchase. ComicPDFReader asks for nothing beyond the download.

ComicPDFReader ships an update every 3 months, 密密本 Pocket Book every 2 days. The most recent releases landed on November 12, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | ComicPDFReader | 密密本 Pocket Book |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 days** |
| Size | 2 MB | 44 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [HSIA-TING YEH](https://appshunter.io/developer/1855889149) | [Ya Chun Chung](https://appshunter.io/developer/6822616799) |

## What reviewers say

### ComicPDFReader

[App page](https://appshunter.io/ios/app/comicpdfreader/id6755726421)

**Features:** Vision Pro support

**In-app purchases:** none


### 密密本 Pocket Book

[App page](https://appshunter.io/ios/app/pocket-book/id6823041472)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $0.99 | one-time |


## Frequently asked questions

### Is ComicPDFReader free?

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

### Is 密密本 Pocket Book free?

密密本 Pocket Book is free to download, with in-app purchases available.

### Do ComicPDFReader or 密密本 Pocket Book have ads?

Neither ComicPDFReader nor 密密本 Pocket Book shows ads.

### Which is updated more often, ComicPDFReader or 密密本 Pocket Book?

ComicPDFReader ships an update every 3 months, and 密密本 Pocket Book every 2 days. Most recently, ComicPDFReader was updated on November 12, 2026 and 密密本 Pocket Book on November 11, 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.*