# 1dollarscan Reader for iPhone vs Penguin

The clearest difference is rating: 1dollarscan Reader for iPhone at 5.0 against Penguin's 4.5. 1dollarscan Reader for iPhone also leads on in-app purchases (none vs 1) and iOS requirement (8.0 vs 18.0). Penguin's advantage is update cadence (every 3 days vs every 62 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Penguin sells 1 one-off in-app purchase. 1dollarscan Reader for iPhone asks for nothing beyond the download.

1dollarscan Reader for iPhone holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

1dollarscan Reader for iPhone ships an update every 62 months, Penguin every 3 days. The most recent releases landed on October 10, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | 1dollarscan Reader for iPhone | Penguin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/1dollarscan-reader-for-iphone/id488640040/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/penguin-cbz-cbr-comic-reader/id6780071705/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 62 months | **Every 3 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 43 MB | 120 MB |
| Requires iOS | **8.0** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [1dollarscan](https://appshunter.io/developer/488640043) | [HAEDUN KIM](https://appshunter.io/developer/1896506869) |

## What reviewers say

### 1dollarscan Reader for iPhone

[App page](https://appshunter.io/ios/app/1dollarscan-reader-for-iphone/id488640040)

Transform scanned book pages into optimized eBooks for your iPhone or iPad. Enjoy reading with features like bookmarks, memos, and brightness adjustments. Access your library anytime, anywhere.

**Highlights:** Optimized scanned eBooks, Memos for files, Page bookmarking, Thumbnail navigation, Brightness adjustment, Page-turning animation, Pinch zoom

**Features:** macOS Compatibility

**In-app purchases:** none


### Penguin

[App page](https://appshunter.io/ios/app/penguin-cbz-cbr-comic-reader/id6780071705)

This app allows you to read your own comic collection in various formats, with on-device translation for Japanese manga. It offers a customizable reading experience and a smart bookshelf, all while prioritizing user privacy and local data processing.

**Highlights:** On-device manga translation for Japanese comics, Supports various file formats (CBZ, CBR, PDF, etc.), SMB and WebDAV network drive support, OPDS catalog compatibility, Smart bookshelf with automatic categorization, Customizable reading gestures and scrolling

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime — Buy Once | $3.99 | one-time |


## Frequently asked questions

### Is 1dollarscan Reader for iPhone free?

1dollarscan Reader for iPhone is free to download, with no in-app purchases.

### Is Penguin free?

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

### Which has better reviews, 1dollarscan Reader for iPhone or Penguin?

1dollarscan Reader for iPhone is rated higher. 1dollarscan Reader for iPhone averages 5.0 out of 5 from 1 ratings, while Penguin averages 4.5 from 2 ratings.

### Do 1dollarscan Reader for iPhone or Penguin have ads?

Neither 1dollarscan Reader for iPhone nor Penguin shows ads.

### Which is updated more often, 1dollarscan Reader for iPhone or Penguin?

1dollarscan Reader for iPhone ships an update every 62 months, and Penguin every 3 days. Most recently, 1dollarscan Reader for iPhone was updated on October 10, 2026 and Penguin on October 13, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*