# eGFR vs Responsum for CKD

The clearest difference is ratings volume: Responsum for CKD at 181 against eGFR's 4. Responsum for CKD also leads on iOS requirement (12.0 vs 16.4). On price, rating, review sentiment and update cadence 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 — 4.8 for eGFR against 4.8 for Responsum for CKD. That said, the two scores are not equally well evidenced: Responsum for CKD has 181 ratings behind it against 4, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

eGFR ships an update fortnightly, Responsum for CKD every 3 weeks. The most recent releases landed on October 24, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | eGFR | Responsum for CKD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/egfr-app/id979256759/reviews) | **[4.8 (181 ratings)](https://appshunter.io/ios/app/responsum-for-ckd/id1503292784/reviews)** |
| Number of ratings | 4 | **181** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 35 MB | 66 MB |
| Requires iOS | 16.4 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Christian Schramm](https://appshunter.io/developer/372862438) | [Responsum Health](https://appshunter.io/developer/1478101522) |

## 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


### Responsum for CKD

[App page](https://appshunter.io/ios/app/responsum-for-ckd/id1503292784)

Access curated summaries of CKD research, treatments, and living tips vetted by experts. Connect with a patient community, store your medical information in a secure One-Sheet, and find resources like clinical trials and support groups.

**Highlights:** CKD article summaries, Patient community connection, Secure Patient One-Sheet, Access to clinical trials, Financial assistance resources, Patient support groups

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is eGFR free?

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

### Is Responsum for CKD free?

Responsum for CKD is free to download, with no in-app purchases.

### Which has better reviews, eGFR or Responsum for CKD?

Responsum for CKD is rated higher. eGFR averages 4.8 out of 5 from 4 ratings, while Responsum for CKD averages 4.8 from 181 ratings.

### Do eGFR or Responsum for CKD have ads?

Neither eGFR nor Responsum for CKD shows ads.

### Which is updated more often, eGFR or Responsum for CKD?

eGFR ships an update fortnightly, and Responsum for CKD every 3 weeks. Most recently, eGFR was updated on October 24, 2026 and Responsum for CKD on October 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*