# ICCR vs LogEM

The clearest difference is in-app purchases: ICCR at none against LogEM's 2. LogEM's advantage is update cadence (fortnightly vs every 33 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. LogEM sells 2 in-app purchases, starting at $3.99 per month. ICCR asks for nothing beyond the download.

ICCR ships an update every 33 months, LogEM fortnightly. The most recent releases landed on November 1, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | ICCR | LogEM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/iccr/id717358930/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 33 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 37 MB | 87 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [ORAU](https://appshunter.io/developer/630626943) | [BRIGHTWELL MEDICAL LIMITED](https://appshunter.io/developer/6818779813) |

## What reviewers say

### ICCR

[App page](https://appshunter.io/ios/app/iccr/id717358930)

This reference tool provides information on internal contamination with radionuclides and their medical countermeasures. It estimates reference concentrations in urine based on hypothetical patient scenarios and standard biokinetic models. The app is designed for professionals interested in radioactive material contamination and therapy.

**Highlights:** Radionuclide and medical countermeasure reference information, Hypothetical patient scenario assessments, Reference concentration estimation in urine, Save, edit, and share assessments, Information on internal contamination and therapy

**Features:** macOS Compatibility

**In-app purchases:** none


### LogEM

[App page](https://appshunter.io/ios/app/logem-em-logbook-and-pocus/id6787253139)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LogEM Pro (Monthly) | $3.99 | per month |
| LogEM Pro (Annual) | $34.99 | per year |


## Frequently asked questions

### Is ICCR free?

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

### Is LogEM free?

LogEM is free to download, with in-app purchases available.

### Do ICCR or LogEM have ads?

Neither ICCR nor LogEM shows ads.

### Which is updated more often, ICCR or LogEM?

ICCR ships an update every 33 months, and LogEM fortnightly. Most recently, ICCR was updated on November 1, 2026 and LogEM on November 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.*