# ICCR vs ClinCalc

The clearest difference is update cadence: ClinCalc at monthly against ICCR's every 33 months. ICCR's advantage is iOS requirement (15.6 vs 18.1). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for ICCR against 5.0 for ClinCalc. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

ICCR ships an update every 33 months, ClinCalc monthly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ICCR | ClinCalc |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/iccr/id717358930/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/clincalc/id6739016756/reviews) |
| Number of ratings | 2 | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 33 months | **Monthly** |
| Monetization | Free | Free |
| Size | 37 MB | 3 MB |
| Requires iOS | **15.6** | 18.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [ORAU](https://appshunter.io/developer/630626943) | [Peter Weiss](https://appshunter.io/developer/1783425640) |

## 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


### ClinCalc

[App page](https://appshunter.io/ios/app/clincalc/id6739016756)

This medical app assists in calculating daily energy and protein requirements based on user height and weight. It also incorporates age-specific calculations for comprehensive nutritional assessment.

**Highlights:** Energy needs calculation, Protein needs calculation, Height and weight input, Age-based calculations, Nutritional assessment tool

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ICCR free?

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

### Is ClinCalc free?

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

### Which has better reviews, ICCR or ClinCalc?

ICCR and ClinCalc are both rated 5.0 out of 5 on the App Store, from 2 and 3 ratings respectively.

### Do ICCR or ClinCalc have ads?

Neither ICCR nor ClinCalc shows ads.

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

ICCR ships an update every 33 months, and ClinCalc monthly. Most recently, ICCR was updated on October 29, 2026 and ClinCalc on October 24, 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.*