# HazChem vs Chemdata

The clearest difference is iOS requirement: Chemdata at 14.0 against HazChem's 16.6. On price, update cadence, 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.

HazChem ships an update every 22 months, Chemdata every 19 months. The most recent releases landed on October 11, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | HazChem | Chemdata |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 19 months** |
| Monetization | — | Free |
| Size | 3 MB | 49 MB |
| Requires iOS | 16.6 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Darren Maxwell](https://appshunter.io/developer/336341197) | [Ricardo-AEA ltd](https://appshunter.io/developer/691094634) |

## What reviewers say

### HazChem

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

**In-app purchases:** none


### Chemdata

[App page](https://appshunter.io/ios/app/chemdata/id849758854)

Access a comprehensive chemical hazard database offline for incident management. Provides detailed information on over 62,000 chemicals, including safety, transport, and emergency response guidance. Offers multilingual support and regular updates.

**Highlights:** Offline chemical database access, Hazardous chemical identification, Incident command support, Transport classification, Personal Protective Equipment (PPE) guidance, Multilingual support (EN, NL, FR, DE, ES)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HazChem free?

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

### Is Chemdata free?

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

### Do HazChem or Chemdata have ads?

Neither HazChem nor Chemdata shows ads.

### Which is updated more often, HazChem or Chemdata?

HazChem ships an update every 22 months, and Chemdata every 19 months. Most recently, HazChem was updated on October 11, 2026 and Chemdata on October 4, 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.*