# eChemBook vs START

The clearest difference is update cadence: eChemBook at every 6 weeks against START's every 16 months. eChemBook also leads on iOS requirement (8.4 vs 15.0). START'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, START every 16 months. The most recent releases landed on October 7, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | eChemBook | START |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 16 months |
| Size | 556 MB | 18 MB |
| Requires iOS | **8.4** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Westermann Digital GmbH](https://appshunter.io/developer/1171669560) | [Danny Grever](https://appshunter.io/developer/1607743186) |

## What reviewers say

### eChemBook

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

**Features:** macOS Compatibility

**In-app purchases:** none


### START

[App page](https://appshunter.io/ios/app/start-events/id1607743184)

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

**In-app purchases:** none


## Frequently asked questions

### Is eChemBook free?

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

### Is START free?

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

### Do eChemBook or START have ads?

Neither eChemBook nor START shows ads.

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

eChemBook ships an update every 6 weeks, and START every 16 months. Most recently, eChemBook was updated on October 7, 2026 and START on October 12, 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.*