# CHT Textile Dyes vs Okuma ABook

The clearest difference is update cadence: CHT Textile Dyes at every 3 months against Okuma ABook's every 13 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CHT Textile Dyes ships an update every 3 months, Okuma ABook every 13 months. Both last shipped on May 16, 2026.

## The numbers

| Metric | CHT Textile Dyes | Okuma ABook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Size | 42 MB | 17 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Christian Ecker](https://appshunter.io/developer/1597200685) | [Okuma Corporation](https://appshunter.io/developer/922363675) |

## What reviewers say

### CHT Textile Dyes

[App page](https://appshunter.io/ios/app/cht-textile-dyes/id569308081)

**Features:** macOS Compatibility

**In-app purchases:** none


### Okuma ABook

[App page](https://appshunter.io/ios/app/okuma-abook/id922363676)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CHT Textile Dyes free?

CHT Textile Dyes is free to download, with no in-app purchases.

### Is Okuma ABook free?

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

### Do CHT Textile Dyes or Okuma ABook have ads?

Neither CHT Textile Dyes nor Okuma ABook shows ads.

### Which is updated more often, CHT Textile Dyes or Okuma ABook?

CHT Textile Dyes ships an update every 3 months, and Okuma ABook every 13 months. Most recently, CHT Textile Dyes was updated on May 16, 2026 and Okuma ABook on May 16, 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.*