Comparison

NoduleRisk vs Radcalc Reference

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

Head to head
About

NoduleRisk

Features
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NoduleRisk is a clinical decision support tool for physicians evaluating pulmonary nodule malignancy risk. It computes probability estimates and management guidance across five validated models simultaneously. MODELS INCLUDED • Mayo Clinic (ACCP) — logistic regression model for incidentally detected nodules • Brock (BTS/PanCan) — recommended for screening populations; validated in the Pan-Canadian Lung Cancer Screening Study • Herder (BTS) — incorporates FDG-PET/CT uptake when available • BIMC (Bayesian) — Bayesian likelihood ratio model with adjustable prior probability; displays individual likelihood ratio contributions • Fleischner 2017 — guideline-based follow-up recommendations with automatic risk stratification FEATURES • Multi-nodule evaluation (up to 6 nodules per patient) • Volume doubling time calculation from serial CT measurements • Risk-stratified management recommendations for each model • Applicability warnings when inputs are outside model validation ranges • Clinical context adjustments for screening and biopsy-referred populations • Fully offline — no data is transmitted or stored IMPORTANT NoduleRisk is intended for use by qualified clinicians as a decision support aid only. Results must be interpreted in the context of the full clinical picture and do not substitute for institutional guidelines, multidisciplinary team discussion, or clinical judgment.

About

Radcalc Reference

Features
Read full description

Radcalc is an offline-first reference tool for radiologists and imaging professionals. It brings together radiology calculators, incidental findings pathways, and tumor response criteria in a focused native app. Use calculator tools for orientation, browse condensed incidental-finding pathways, and review tumor-response criteria with cited references. All core content is bundled for offline access. Results and references are intended to support professional review, not replace clinical judgment. For educational and professional reference only. Radcalc is not a medical device and does not provide diagnosis or treatment. Verify results against the cited source guideline, local policy, and professional clinical judgment. Do not use for emergencies.

Screenshots

NoduleRisk4 screens
Radcalc Reference3 screens

Verdict

The call

The clearest difference is device support: Radcalc Reference at 3 against NoduleRisk's 1. Radcalc Reference also leads on iOS requirement (15.1 vs 17.6). 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.

Scorecard2 real differences · 3 level
NoduleRisk versus Radcalc Reference: the parameters behind the verdict, then further details
ParameterNoduleRiskRadcalc Reference
PriceFreeFree
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size2 MB21 MB
Age rating17+17+
DeveloperRutvik ShahParikh Radiology, P.L.L.C.

In-app purchases

None

NoduleRisk

No in-app purchases

None

Radcalc Reference

No in-app purchases

Questions

Is NoduleRisk free?
NoduleRisk is free to download, with no in-app purchases.
Is Radcalc Reference free?
Radcalc Reference is free to download, with no in-app purchases.
Do NoduleRisk or Radcalc Reference have ads?
Neither NoduleRisk nor Radcalc Reference shows ads.

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