# NephroCalc™ vs NephRef

The clearest difference is price: NephRef at Free against NephroCalc™'s $3.99. NephRef also leads on update cadence (every 10 days vs every 10 months) and iOS requirement (11.0 vs 13.0). On rating, ratings volume, ads and in-app purchases there is nothing between them.

NephRef is free to download; NephroCalc™ costs $3.99 up front. 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 NephroCalc™ against 5.0 for NephRef. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

NephroCalc™ ships an update every 10 months, NephRef every 10 days. The most recent releases landed on October 7, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | NephroCalc™ | NephRef |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/nephrocalc/id573215712/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/nephref/id1486749987/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 10 days** |
| Monetization | Paid | **Free** |
| Size | 24 MB | 44 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [ScyMed, Inc](https://appshunter.io/developer/545140733) | [Media Foundations LLC](https://appshunter.io/developer/589717539) |

## What reviewers say

### NephroCalc™

[App page](https://appshunter.io/ios/app/nephrocalc/id573215712)

This medical calculator app provides over 100 essential formulas and equations for assessing patients with kidney disease and acid-base disorders. It features innovative Master panels for combined calculations and a physician-friendly interface for efficient patient data management.

**Highlights:** Over 100 renal and acid-base equations, Innovative MultiCalx™ Master panels, Customizable mCalx™ DARK calculator, Physician-friendly intuitive interface, Automatic unit conversion, Color-coded normal-abnormal outputs, Fully referenced clinical data

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

**In-app purchases:** none


### NephRef

[App page](https://appshunter.io/ios/app/nephref/id1486749987)

This medical reference tool aids physicians and advanced practitioners in managing patients with kidney disease. It provides quick access to educational resources and guidance on patient referral, urgency, and interval management.

**Highlights:** Kidney disease patient care guidance, Referral management, Urgency assessment, Interval management, Educational resources access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is NephroCalc™ free?

NephroCalc™ costs $3.99, with no in-app purchases.

### Is NephRef free?

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

### Which has better reviews, NephroCalc™ or NephRef?

NephroCalc™ and NephRef are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do NephroCalc™ or NephRef have ads?

Neither NephroCalc™ nor NephRef shows ads.

### Which is updated more often, NephroCalc™ or NephRef?

NephroCalc™ ships an update every 10 months, and NephRef every 10 days. Most recently, NephroCalc™ was updated on October 7, 2026 and NephRef on September 18, 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.*