# Biorisk External vs IHehsCalc

Biorisk External and IHehsCalc are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 6 weeks. The most recent releases landed on November 7, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Biorisk External | IHehsCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (8 ratings)](https://appshunter.io/ios/app/ihehscalc/id6446093566/reviews)** |
| Number of ratings | — | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | Every 6 weeks |
| Monetization | — | Free |
| Size | 60 MB | 68 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [pigchamp](https://appshunter.io/developer/1518568682) | [A-EHS](https://appshunter.io/developer/1114522351) |

## What reviewers say

### Biorisk External

[App page](https://appshunter.io/ios/app/biorisk-external/id1612622528)

**Features:** Vision Pro support

**In-app purchases:** none


### IHehsCalc

[App page](https://appshunter.io/ios/app/ihehscalc/id6446093566)

This application provides essential calculations for professionals in the environment, health, and safety (EHS) field. It serves as a modern homage to a popular original app, offering useful tools for industrial hygiene tasks. The app is free to use, with an option to donate to a relevant foundation.

**Highlights:** EHS calculations, Industrial hygiene formulas, Homage to original IHcalc app, Free to use, Donation option

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biorisk External free?

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

### Is IHehsCalc free?

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

### Do Biorisk External or IHehsCalc have ads?

Neither Biorisk External nor IHehsCalc shows ads.

### Which is updated more often, Biorisk External or IHehsCalc?

Biorisk External ships an update every 6 weeks, and IHehsCalc every 6 weeks. Most recently, Biorisk External was updated on November 7, 2026 and IHehsCalc on November 3, 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.*