NefroCalc vs RheumaHelper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
NefroCalc
This medical app provides quick calculations for glomerular filtration rate (GFR) using multiple established formulas. It supports CKD-EPI, MDRD, Cockcroft-Gault, and the Schwartz formula for pediatric use.
- GFR calculation
- CKD-EPI formula
- MDRD formula
- Cockcroft-Gault formula
- Schwartz formula for children
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NefroCalc is a renal calculator for quickly getting the glomerular filtration rate (GFR) by one of the following methods: - GFR by CKD EPI - GFR by MDRD - Cockcroft-Gault - Schwartz formula for children More information on NefroCalc´s Web page
RheumaHelper
This medical tool offers rheumatologists a comprehensive set of disease activity calculators and classification criteria for daily use. It provides verified content based on published research and is designed for easy reference on mobile devices.
- Disease activity calculators
- Classification criteria
- Verified medical content
- Award-winning tool
- Easy mobile reference
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** An awarded mobile tool for rheumatologists ** RheumaHelper is a pocket rheumatology assistant. Classification criteria, disease activity calculators, and everyday clinical tools — always with you, easy to use, and ready when you need them. Designed for iOS 26 with Liquid Glass on iPhone and iPad. ** Verified content ** Reviewed by Prof. Matija Tomšič, M.D., Ph.D., Asst. Prof. Žiga Rotar, M.D., Ph.D. (rheumatologists at University Medical Centre Ljubljana, Slovenia), and Rok Ješe, M.D., Ph.D. (rheumatologist and medical advisor at Mediately). All calculators and criteria are based on referenced equations. References are available inside the app. ** Available tools ** More than 40 tools with fast search access. Classification criteria: • Adult Still's disease (Cush, Fautrel, Yamaguchi) • Antiphospholipid syndrome • Arthralgia suspicious for progression to RA (2016 EULAR) • Autoinflammatory recurrent fevers (clinical classification) • Axial spondyloarthritis • Behçet's Disease (ICBD) • Fibromyalgia (2016 ACR) • Gout (2014 Oxford; 2015 ACR-EULAR) • IgG4-related disease (2019 ACR/EULAR) • Idiopathic inflammatory myopathies (2017 ACR/EULAR) • Inflammatory Back Pain • Peripheral spondyloarthritis • Polymyalgia rheumatica • Primary Sjögren's syndrome (2016 ACR/EULAR) • Psoriatic arthritis (CASPAR) • Rheumatoid arthritis (2010 ACR/EULAR) • Systemic lupus erythematosus (ACR, SLICC, 2019 EULAR/ACR) • Systemic sclerosis (ACR/EULAR) • …and more Disease activity calculators: • ASDAS — Ankylosing spondylitis disease activity score • BASDAI — Bath ankylosing spondylitis disease activity index • BVAS — Birmingham vasculitis activity score (v3) • DAPSA, DAPSA28 • DAS28 • ESSDAI, ESSPRI • Five-Factor Score • PASI — Psoriasis area and severity index • SDAI / CDAI • SELENA-SLEDAI • VDI — Vasculitis damage index • …and more General tools: • QTc (Corrected QT Interval) • Creatinine Clearance (Cockcroft–Gault) • eGFR (CKD-EPI and MDRD) • …and more coming soon
Screenshots
Verdict
NefroCalc and RheumaHelper both sit at 5.0 stars, but that hides the real split: 100% of NefroCalc's written reviews are positive against 59% of RheumaHelper's. NefroCalc also leads on monetization model (free vs ad-supported) and iOS requirement (8.0 vs 18.0). RheumaHelper's advantage is ratings volume (130 vs 1) and update cadence (every 2 months vs every 8 months). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
NefroCalc holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: RheumaHelper has 130 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of NefroCalc's written reviews are positive against 59% of RheumaHelper's.
NefroCalc ships an update every 8 months, RheumaHelper every 2 months. Both last shipped on October 23, 2026.
| Parameter | NefroCalc | RheumaHelper |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.8 (130 ratings) |
| Positive reviews | 100.0% of reviews — better | 58.6% of reviews |
| Number of ratings | 1 | 130 — better |
| Update frequency | Every 8 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 7 MB | 20 MB |
| Age rating | 4+ | 17+ |
| Developer | Oscar Sosa | Modra Jagoda, spletno oblikovanje in razvoj mobilnih aplikacij d.o.o. |
Customer experience
NefroCalc
RheumaHelper
In-app purchases
NefroCalc
No in-app purchases
RheumaHelper
No in-app purchases
