# iBunkoS vs ChatBooks

The clearest difference is review sentiment: iBunkoS at 51% against ChatBooks's 0%. iBunkoS also leads on update cadence (every 2 months vs every 27 months) and chart position (#180 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

iBunkoS costs $2.99 and ChatBooks $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

iBunkoS ships an update every 2 months, ChatBooks every 27 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | iBunkoS | ChatBooks |
| --- | --- | --- |
| Price | **$2.99** | $4.99 |
| Rating | **[4.4 (9 ratings)](https://appshunter.io/ios/app/ibunkos/id418102178/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | **51.2% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 27 months |
| Monetization | Paid | Paid |
| Best chart rank | **#180** | — |
| Size | 35 MB | 28 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [DWANGO Co., Ltd.](https://appshunter.io/developer/297539595) | [KOJI HARA](https://appshunter.io/developer/566940810) |

## What reviewers say

### iBunkoS

[App page](https://appshunter.io/ios/app/ibunkos/id418102178)

**Currently charting:** #180 Top Paid · Book (US App Store)

This app offers a realistic paper book reading experience on your iPhone, supporting various file formats like TXT, PDF, and comics. It includes features like a digital bookshelf, bookmarking with notes, and dictionary lookups.

**Highlights:** Realistic paper book interface, Supports TXT, PDF, CBZ, CBR files, 230+ built-in books and Aozora Bunko access, Customizable bookshelf and bookmarks, File transfer via USB, cloud, and servers, Dictionary lookup integration, Passcode lock for privacy

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### ChatBooks

[App page](https://appshunter.io/ios/app/chatbooks-literary-stream/id929849945)

Experience Japanese literary masterpieces as if their authors were alive today, posting their works on a social media timeline. Over 400 classic and modern works are available for unlimited reading, allowing you to follow favorite authors and share passages.

**Highlights:** Literary giants post works like social media, Over 400 masterpieces available, Unlimited reading of classics and modern literature, Follow favorite authors, Save and share favorite passages, Customizable timeline

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

**In-app purchases:** none


## Frequently asked questions

### Is iBunkoS free?

iBunkoS costs $2.99, with no in-app purchases.

### Is ChatBooks free?

ChatBooks costs $4.99, with no in-app purchases.

### Do iBunkoS or ChatBooks have ads?

Neither iBunkoS nor ChatBooks shows ads.

### Which is updated more often, iBunkoS or ChatBooks?

iBunkoS ships an update every 2 months, and ChatBooks every 27 months. Most recently, iBunkoS was updated on November 1, 2026 and ChatBooks on November 1, 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.*