eGFR vs MGH Nephrology Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
eGFR
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.
- GFR calculation
- Schwartz formula for children
- CKD-EPI, MDRD, Cockcroft formulas
- Information on kidney disease
- Risk minimization guidance
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As an important parameter for assessing kidney function, the glomerular filtration rate, or GFR, is widely used. With the eGFR app, you can calculate an estimated glomerular filtration rate (eGFR) based on serum creatinine. For children and adolescents up to 18 years of age, the Schwartz formula is available. For adults, the CKD-EPI, MDRD and Cockcroft-Gault formulas can be used depending on the desired calculation. In addition, the app provides background information on the individual formulas, guidance on the interpretation of GFR values, and information on risk reduction. The eGFR app is intended solely for calculation and informational purposes and does not replace medical diagnosis, advice or treatment. Medical decisions should not be made solely on the basis of the information provided in the app. In case of health concerns, abnormal values, or before making medical decisions, medical advice should be sought.
MGH Nephrology Guide
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.
- 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
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The Nephrology Guide of the Massachusetts General Hospital is an up-to-date, quick reference for the diagnosis and management of patients with acute and chronic kidney disease as well as common electrolyte and acid-base disorders. It was developed for generalists—students, residents, primary care physicians, nurse practitioners, and physician assistants—as well as nephrology fellows, attendings, and dialysis nurses. Over 150 topics are authored by nephrology experts at the Massachusetts General Hospital (MGH) and include more than 320 tables, charts, figures, images, and carefully organized lists. Hard to find information such as considerations for special populations (e.g., patients with diabetes, cancer, lupus, HIV) are also included. The Guide is fully integrated with Unbound Medicine’s Prime PubMed allowing users to link from literature references to full citations, abstracts, and full-text journal articles provided by the publisher. With the Guide you can: * Consult more than 150 topics in bulleted, fast-read format * Review 320+ tables with quick synopses of clinical considerations * Find detailed sections on dialysis and kidney transplantation * Stay current with regular updates delivered automatically * Highlight and make custom notes within topics * Link to the primary literature using Prime PubMed * Search by specific keywords to find topics fast * Bookmark 'Favorites' and organize them using popular tagging feature Purchase includes a 1-year subscription with regular content updates. Your Nephrology Guide of the Massachusetts General Hospital subscription automatically renews at the current rate of $49.99 unless auto-renew is turned off 24 hours prior to the conclusion of your current 1-year period, which can be done in account settings. This will ensure you receive all updates for the following year. Should you choose not to renew, you will be able to continue to use the content however will not receive updates. Editor: Eliot Heher, MD, Medical Director, MGH Kidney Transplant Program Powered by: Unbound Medicine Unbound Privacy Policy: www.unboundmedicine.com/privacy Unbound Terms of Use: https://www.unboundmedicine.com/end_user_license_agreement
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | eGFR | MGH Nephrology Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (4 ratings) — better | 4.7 (27 ratings) |
| Positive reviews | 100.0% of reviews — better | 50.0% of reviews |
| Number of ratings | 4 | 27 — better |
| Update frequency | Fortnightly — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Subscription |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.4 | 15.0 — better |
| Further details — not scored | ||
| Size | 35 MB | 10 MB |
| Age rating | 17+ | 17+ |
| Developer | Christian Schramm | Unbound Medicine, Inc. |
Customer experience
eGFR
MGH Nephrology Guide
In-app purchases
eGFR
No in-app purchases
MGH Nephrology Guide
- MGH Nephrology Guide$49.991 Year








