# BYK Additive Guide vs YCK

The clearest difference is update cadence: YCK at weekly against BYK Additive Guide's every 4 months. YCK also leads on iOS requirement (13.0 vs 16.6). 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.

BYK Additive Guide ships an update every 4 months, YCK weekly. The most recent releases landed on October 14, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | BYK Additive Guide | YCK |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free | — |
| Size | 15 MB | 18 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [BYK-Chemie GmbH](https://appshunter.io/developer/423808350) | [Shanghai Yike Chemistry Technology Co., Ltd.](https://appshunter.io/developer/1706455369) |

## What reviewers say

### BYK Additive Guide

[App page](https://appshunter.io/ios/app/byk-additive-guide/id423808347)

Explore BYK's additive portfolio with this app. Access updated product information, browse recommendations by application, and view relevant data. Available in German, English, and Chinese.

**Highlights:** Updated product information, Additive recommendations by application, Relevant product data, Multilingual support (DE, EN, CN)

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

**In-app purchases:** none


### YCK

[App page](https://appshunter.io/ios/app/yck/id6465134654)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BYK Additive Guide free?

BYK Additive Guide is free to download, with no in-app purchases.

### Is YCK free?

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

### Do BYK Additive Guide or YCK have ads?

Neither BYK Additive Guide nor YCK shows ads.

### Which is updated more often, BYK Additive Guide or YCK?

BYK Additive Guide ships an update every 4 months, and YCK weekly. Most recently, BYK Additive Guide was updated on October 14, 2026 and YCK on October 17, 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.*