# eGFR vs MGH Nephrology Guide

eGFR and MGH Nephrology Guide both sit at 4.8 stars, but that hides the real split: 100% of eGFR's written reviews are positive against 50% of MGH Nephrology Guide's. eGFR also leads on in-app purchases (none vs 1) and update cadence (fortnightly vs every 6 months). MGH Nephrology Guide's advantage is ratings volume (27 vs 4). On price, rating, ads and device support there is nothing between them.

Both are free to download. MGH Nephrology Guide sells 1 in-app purchase, starting at $49.99 per year. eGFR asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for eGFR against 4.7 for MGH Nephrology Guide. That said, the two scores are not equally well evidenced: MGH Nephrology Guide has 27 ratings behind it against 4, so its average is the more settled of the two. Written reviews are what separate them: 100% of eGFR's written reviews are positive against 50% of MGH Nephrology Guide's.

eGFR ships an update fortnightly, MGH Nephrology Guide every 6 months. The most recent releases landed on October 29, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | eGFR | MGH Nephrology Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/egfr-app/id979256759/reviews)** | [4.7 (27 ratings)](https://appshunter.io/ios/app/mgh-nephrology-guide/id1346849427/reviews) |
| Number of ratings | 4 | **27** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 months |
| Monetization | **Free** | Subscription |
| Size | 35 MB | 10 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Christian Schramm](https://appshunter.io/developer/372862438) | [Unbound Medicine, Inc.](https://appshunter.io/developer/300420400) |

## What reviewers say

### eGFR

[App page](https://appshunter.io/ios/app/egfr-app/id979256759)

Calculate glomerular filtration rate (GFR) using various formulas for different age groups. Provides information on kidney disease classification and risk minimization. Always consult a doctor for medical decisions.

**Highlights:** GFR calculation, Schwartz formula for children, CKD-EPI, MDRD, Cockcroft formulas, Information on kidney disease, Risk minimization guidance

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

**In-app purchases:** none


### MGH Nephrology Guide

[App page](https://appshunter.io/ios/app/mgh-nephrology-guide/id1346849427)

A quick reference for diagnosing and managing kidney disease, electrolyte, and acid-base disorders. Developed by MGH experts, it offers over 150 topics with extensive tables, figures, and images. Includes integration with Prime PubMed for literature access and regular content updates.

**Highlights:** 150+ topics in fast-read format, 320+ tables, charts, and figures, Sections on dialysis and transplantation, Regular automatic updates, Highlighting and note-taking, Prime PubMed integration, Keyword search and bookmarking

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MGH Nephrology Guide | $49.99 | per year |


## Frequently asked questions

### Is eGFR free?

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

### Is MGH Nephrology Guide free?

MGH Nephrology Guide is free to download, with in-app purchases available.

### Which has better reviews, eGFR or MGH Nephrology Guide?

eGFR is rated higher. eGFR averages 4.8 out of 5 from 4 ratings, while MGH Nephrology Guide averages 4.7 from 27 ratings.

### Do eGFR or MGH Nephrology Guide have ads?

Neither eGFR nor MGH Nephrology Guide shows ads.

### Which is updated more often, eGFR or MGH Nephrology Guide?

eGFR ships an update fortnightly, and MGH Nephrology Guide every 6 months. Most recently, eGFR was updated on October 29, 2026 and MGH Nephrology Guide on October 31, 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.*