Apps by Marc L. Melcher
EPTS Calculator app icon

Medical

EPTS Calculator

Marc L. Melcher

Free 3.00 · 1 storefront · 1 rating No in-app purchases
Open on Apple

About this app

EPTS Calculator — Kidney Transplant Survival Scoring Quickly calculate the Estimated Post-Transplant Survival (EPTS) score used in the U.S. kidney allocation system. Designed for transplant surgeons, nephrologists, coordinators, and researchers who need accurate, on-the-go EPTS percentile scoring. WHAT IT DOES The EPTS score estimates a kidney transplant candidate's expected post-transplant longevity using four OPTN-defined factors: patient age, diabetes status, prior solid organ transplants, and time on dialysis. Candidates scoring in the top 20% receive priority for the highest-longevity donor kidneys (KDPI ≤20%). KEY FEATURES • Instant EPTS Calculation — Adjust sliders and toggles, see your raw score and percentile update in real time with an animated gauge display • KDPI ≤20% Eligibility Badge — Immediately see whether a candidate qualifies for longevity-matched kidney priority • What-If Scenario Comparison — Model two sets of parameters side by side to counsel patients on how factors like starting dialysis or a diabetes diagnosis impact their score • OPTN Formula Reference — Built-in info sheet with the complete EPTS formula, coefficient explanations, allocation policy summary, and source citations • Clinician-Friendly Design — Clean, modern interface with haptic feedback, dark mode support, and frosted glass aesthetics designed for fast clinical workflows FORMULA & DATA The raw EPTS formula follows OPTN Policy 8.4.B with coefficients verified through 2025. The percentile mapping table is clearly labeled with its source year so you always know the data provenance. DISCLAIMER This tool is for educational and clinical reference purposes only. It is not a substitute for clinical judgment. The percentile mapping table is updated annually by OPTN — always verify against the current official tables before making allocation decisions. This app is not affiliated with OPTN, UNOS, or SRTR.

Latest release

What’s New

Version 2.00 May 22, 2026

Modernized UI with frosted glass design and animated percentile gauge • KDPI ≤20% eligibility badge — instantly see longevity-matching priority status • What-If scenario comparison — side-by-side parameter modeling for patient counseling • Info sheet with full OPTN formula reference, allocation policy, and citations • Bug fixes: corrected risk tier display for edge-case scores • Haptic feedback on score changes • New app icon

Audience growth

Ratings growth

Steady
7-day gain +0
Ratings / day 0.0
30-day gain +0
US rating-count history
1 ratings
1 Sep 16, 2026 · 1 ratings Sep 16, 2026

Baseline captured. Growth appears after the crawler observes a changed rating count.

Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.

Price tracking

Price intelligence

1 captured event
Current Free
Historical low Free
Paid → free 0×
Price history
Current Free
Free Sep 16, 2026 · Free Sep 16, 2026

First snapshot captured. The trend line starts after the next crawler price observation.

  1. First observed Sep 16, 2026 · 12:43 PM Free

Screenshots

EPTS Calculator iPhone screenshot