# CkdCalc — CKD Calculator > CKD prognosis prediction and patient management tool for medical professionals. (iPhone/iPad app by Yusuke Tsukamoto.) - Source: https://appshunter.io/ios/app/ckdcalc/id1558592717 (this page in markdown: same URL + `.md`) - Developer: [Yusuke Tsukamoto](https://appshunter.io/developer/1558592719) - Category: Medical - Price: $1.99 - Age rating: 17+ - Requires: iOS 17.5 · 1 MB - Languages: American English, Japanese - Released: 2021-03-23 - Data updated: 2026-08-08 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/ckdcalc/id1558592717/reviews.md ## What is CkdCalc? Ten Calculation Apps Essential for CKD Treatment. 1) Kidney Failure Risk Equation (non-North American, 4 variables), 2) Kidney Failure Risk Equation (non-North American, 6 variables), 3) Prognosis of IgA nephropathy after kidney biopsy (common to all races), 4) Prognosis of IgA nephropathy one year after renal biopsy (common to all races), 5) 2021 CKD-EPI creatinine eGFR (common to all races), 6) 2021 CKD-EPI Creatinin- Cystatin C eGFR (common to all races), 7) ACR estimation from PCR, 8) ACR estimation from urine protein test strips, 9) Dietary protein intake (for 24 hrs urine), 10) Salt intake (for early morning urine). ## Key features - Prognosis prediction for IgA nephropathy - Renal replacement therapy risk calculation - Estimated GFR calculation - ACR estimation from PCR or urine dipstick - Protein and salt intake calculation ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/ckdcalc/id1558592717/reviews.md ### 5/5 — 使いやすいです *2021-07-07* 腎臓の計算ソフトでここまで使いやすく詳しいものは他にないかと思います。おすすめです！ ### 5/5 — 使いやすい！ *2021-07-07* 腎臓内科として日常使う計算式なのがまとめられていて、とても良かったです！ ## Frequently asked questions about CkdCalc ### What is CKD Prognosis App used for? CKD Prognosis App is designed for physicians and healthcare professionals to assist in managing patients with Chronic Kidney Disease. It provides tools for predicting prognosis, calculating risks for renal replacement therapy, and estimating key kidney function markers. ### Who is the target audience for CKD Prognosis App? The app is specifically intended for use by doctors and medical professionals who are involved in the care and treatment of individuals with Chronic Kidney Disease. ### What specific calculations can CKD Prognosis App perform? CKD Prognosis App can calculate prognosis based on IgA nephropathy kidney biopsies, estimate the risk of needing renal replacement therapy in 2 and 5 years, calculate estimated GFR, and estimate ACR from protein intake or urine tests. It also helps calculate protein and salt intake. ### What is the age rating for CKD Prognosis App? CKD Prognosis App has an age rating of 17+, indicating it is intended for adult users and medical professionals. ### How often is CKD Prognosis App updated? The latest version of CKD Prognosis App is 3.2, and it was last updated on December 2, 2024. This suggests regular updates to maintain functionality and accuracy. ### What is the user rating for CKD Prognosis App? CKD Prognosis App has a high user rating of 4.9 stars, based on 8 ratings. This indicates a very positive reception from its users. ### Is CKD Prognosis App available on multiple platforms? The provided data does not specify platform compatibility. However, medical applications are typically developed for widely used mobile operating systems. ### Does CKD Prognosis App contain advertisements? The provided data does not specify if CKD Prognosis App contains advertisements. However, given its professional medical focus and lack of in-app purchases, it is likely designed to be ad-free. ## Version history (last 5 releases) ### 4.0 — 2026-07-15 This version enables use not only in Japanese-speaking but also English-speaking countries, and by using the KFRE formula for non-North Americans, it is possible to determine the risk of progression to end-stage renal failure recommended by the KDIGO 2021 CKD guidelines. This allows for referrals to nephrologists, referrals to preventive clinics for renal replacement therapy by a multidisciplinary team, and the timing for selecting renal replacement therapy. Additionally, prognostic prediction formulas specialized for IgA nephropathy help avoid excessive immunosuppressive therapy in low-risk cases, while conversely, it is possible to determine when to initiate aggressive treatment in high-risk cases. Additionally, the new formula for estimating GFR by the 2021 CKD-EPI provides more accurate GFR for all races and people with uneven body types. It is especially useful for patients around GFR 60 with negative urine abnormality and can help prevent overdiagnosis as CKD. ### 3.2 — 2024-12-02 アプリの名称を分かり易い”CKD予後予測”としました。 ### 3.1 — 2024-08-07 IgA腎症の予後予測式を新たに加えました。また3.1では一部のiPhoneで結果がnumber padで隠れてしまう不具合を修正しました。 ### 3.0 — 2024-07-30 KDIGOガイドラインによって推奨されたIgA腎症の腎生検に基づく予後（末期腎不全またはGFR半減）予測式を加えました。 ### 2.2 — 2021-08-23 CKD計算機の使用法を説明したYouTubeへのリンクを追加しました。 ## More apps by Yusuke Tsukamoto - [NewABGAnalyzer](https://appshunter.io/ios/app/newabganalyzer/id6738852610) All apps by Yusuke Tsukamoto: https://appshunter.io/developer/1558592719 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-08.*