# iBunkoHD vs Umizaru

The clearest difference is price: Umizaru at Free against iBunkoHD's $6.99. Umizaru also leads on review sentiment (82% vs 58%). iBunkoHD's advantage is in-app purchases (none vs 10) and update cadence (every 2 months vs every 6 months). On ads and device support there is nothing between them.

Umizaru is free to download; iBunkoHD costs $6.99 up front. Umizaru sells 10 one-off in-app purchases. iBunkoHD asks for nothing beyond the download.

iBunkoHD ships an update every 2 months, Umizaru every 6 months. The most recent releases landed on September 27, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | iBunkoHD | Umizaru |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[4.0 (7 ratings)](https://appshunter.io/ios/app/ibunkohd/id369111608/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 58.5% of reviews | **82.4% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 6 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 35 MB | 5 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [DWANGO Co., Ltd.](https://appshunter.io/developer/297539595) | [Susumu Hoshikawa](https://appshunter.io/developer/413265272) |

## What reviewers say

### iBunkoHD

[App page](https://appshunter.io/ios/app/ibunkohd/id369111608)

Experience reading novels, documents, and comic books with a realistic interface that mimics a physical book. Organize your library with a bookshelf, add notes to bookmarks, and easily transfer files from various cloud services. Enjoy enhanced readability with smart screen design and quick page navigation.

**Highlights:** Realistic paper book interface, Vertical and horizontal writing support, Double page spread view, Built-in Aozora Bunko library access, Customizable bookshelf organization, Bookmark with notes and text selection, Multiple file format support (.txt, .pdf, .zip, .rar, .cbz, .cbr)

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

**In-app purchases:** none


### Umizaru

[App page](https://appshunter.io/ios/app/umizaru/id600724094)

Experience the acclaimed Japanese comic series "Umizaru" on your iPhone or iPad. Follow the thrilling adventures of Coast Guard officers as they tackle sea disaster accidents. The first volume is available for free, with subsequent volumes offered for purchase.

**Highlights:** Digital comic reader, First volume free, Purchase subsequent volumes, Based on popular manga, Features Coast Guard stories, Adapted into movies and dramas

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 海猿 第02巻 | $1.99 | one-time |
| 海猿 第03巻 | $1.99 | one-time |
| 海猿 第04巻 | $1.99 | one-time |
| 海猿 第05巻 | $1.99 | one-time |
| 海猿 第06巻 | $1.99 | one-time |
| 海猿 第07巻 | $1.99 | one-time |
| 海猿 第08巻 | $1.99 | one-time |
| 海猿 第09巻 | $1.99 | one-time |
| 海猿 第11巻 | $1.99 | one-time |
| 海猿 第12巻 | $1.99 | one-time |


## Frequently asked questions

### Is iBunkoHD free?

iBunkoHD costs $6.99, with no in-app purchases.

### Is Umizaru free?

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

### Do iBunkoHD or Umizaru have ads?

Neither iBunkoHD nor Umizaru shows ads.

### Which is updated more often, iBunkoHD or Umizaru?

iBunkoHD ships an update every 2 months, and Umizaru every 6 months. Most recently, iBunkoHD was updated on September 27, 2026 and Umizaru on September 23, 2026.

---

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