# eChemBook vs we4bee

The clearest difference is update cadence: eChemBook at every 6 weeks against we4bee's every 25 months. eChemBook also leads on iOS requirement (8.4 vs 11.0). we4bee's advantage is device support (3 vs 1). On price, ads and in-app purchases there is nothing between them.

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

eChemBook ships an update every 6 weeks, we4bee every 25 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | eChemBook | we4bee |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 25 months |
| Size | 556 MB | 52 MB |
| Requires iOS | **8.4** | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Westermann Digital GmbH](https://appshunter.io/developer/1171669560) | [we4bee gemeinnuetzige UG (haftungsbeschraenkt)](https://appshunter.io/developer/1495540560) |

## What reviewers say

### eChemBook

[App page](https://appshunter.io/ios/app/echembook/id1045400763)

**Features:** macOS Compatibility

**In-app purchases:** none


### we4bee

[App page](https://appshunter.io/ios/app/we4bee/id1495540561)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is eChemBook free?

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

### Is we4bee free?

we4bee is free to download, with no in-app purchases.

### Do eChemBook or we4bee have ads?

Neither eChemBook nor we4bee shows ads.

### Which is updated more often, eChemBook or we4bee?

eChemBook ships an update every 6 weeks, and we4bee every 25 months. Most recently, eChemBook was updated on October 7, 2026 and we4bee on October 8, 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.*