# HazChem vs ADR Zone

The clearest difference is iOS requirement: ADR Zone at 15.1 against HazChem's 27.1. 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.

## The numbers

| Metric | HazChem | ADR Zone |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | — |
| Size | 6 MB | 36 MB |
| Requires iOS | 27.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Darren Maxwell](https://appshunter.io/developer/336341197) | [Plamen Markov](https://appshunter.io/developer/1896686807) |

## What reviewers say

### HazChem

[App page](https://appshunter.io/ios/app/hazchem/id645637554)

**In-app purchases:** none


### ADR Zone

[App page](https://appshunter.io/ios/app/adr-zone/id6769773386)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HazChem free?

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

### Is ADR Zone free?

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

### Do HazChem or ADR Zone have ads?

Neither HazChem nor ADR Zone shows ads.

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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.*