Comparison

EPTS Calculator vs Vidiyal

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EPTS Calculator

Calculate the Estimated Post-Transplant Survival (EPTS) score for kidney transplant candidates. This tool helps medical professionals quickly assess a patient's longevity score based on age, diabetes, prior transplants, and dialysis time, determining eligibility for priority donor kidneys.

Highlights
  • Instant EPTS Calculation
  • KDPI ≤20% Eligibility Badge
  • What-If Scenario Comparison
  • OPTN Formula Reference
  • Clinician-Friendly Design
  • Dark Mode Support
Read full description

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.

About

Vidiyal

Features
Read full description

Tamil Nadu is one of the first States to initiate Cadaver Transplant in 1995 after the Transplantation of Human Organs Act was passed in the year 1994. Cadaver Transplant Program was started by the then Hon’ble Chief Minister Dr.Kalaignar.M.Karunanidhi in the year of 2008. Cadaver Transplant Programme was made a Government Society in May 2015 and named as Transplant Authority of Tamil Nadu under the Chairmanship of the Honourable Chief Minister of Tamil Nadu.

Screenshots

EPTS Calculator1 screens
Vidiyal4 screens

Verdict

The call

The clearest difference is update cadence: Vidiyal at every 5 weeks against EPTS Calculator's every 12 months. Vidiyal also leads on device support (3 vs 1) and iOS requirement (11.0 vs 18.6). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EPTS Calculator ships an update every 12 months, Vidiyal every 5 weeks. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
EPTS Calculator versus Vidiyal: the parameters behind the verdict, then further details
ParameterEPTS CalculatorVidiyal
PriceFreeFree
Rating3.0 (1 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 12 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS18.611.0 — better
Further details — not scored
Size5 MB46 MB
Age rating4+12+
DeveloperMarc L. MelcherTRANSPLANT AUTHORITY OF TAMIL NADU

In-app purchases

None

EPTS Calculator

No in-app purchases

None

Vidiyal

No in-app purchases

Questions

Is EPTS Calculator free?
EPTS Calculator is free to download, with no in-app purchases.
Is Vidiyal free?
Vidiyal is free to download, with no in-app purchases.
Do EPTS Calculator or Vidiyal have ads?
Neither EPTS Calculator nor Vidiyal shows ads.
Which is updated more often, EPTS Calculator or Vidiyal?
EPTS Calculator ships an update every 12 months, and Vidiyal every 5 weeks. Most recently, EPTS Calculator was updated on November 11, 2026 and Vidiyal on November 7, 2026.

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