CHADS vs CV Risk Estimation
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CHADS
This medical app calculates the CHA2DS2-VASc score for patients with atrial fibrillation. It provides the relative risk of thromboembolism based on the calculated score, offering an improvement over older scoring methods.
- CHA2DS2-VASc score calculation
- Thromboembolism risk assessment
- Improvement over CHADS2 score
- Simple user interface
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Simple app to calculate the risk for thromboembolic disease in patients with atrial fibrillation. Significant improvement over the old CHADS2 score. Calculates the CHA2DS2-VASc score and also gives the relative risk of thromboembolism based on that particular score.
CV Risk Estimation
This app provides clinicians with three essential 10-year cardiovascular event risk calculators for primary prevention. It helps estimate risk based on patient data and assess the potential impact of lifestyle changes.
- Framingham 2008 risk calculator
- ASCVD 2013 risk calculator
- ASCVD 2018 risk calculator
- Cardiovascular disease primary prevention tool
- Risk impact assessment for lifestyle changes
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This app is for CLINICIANS, not the lay public. The CV Risk app presents clinicians with three valuable 10-year cardiovascular event risk calculators to serve clinicians and learners in primary prevention of cardiovascular disease. It is for clinicians only, not the lay public. The calculators are Framingham 2008, ASCVD 2013, and the revised pooled cohort equations ASCVD of 2018. The app addresses such common questions as: • What is the ASCVD 10-year CV risk for a 57 year old male hypertensive smoker with a given set of lipid and blood pressure numbers? • What’s the magnitude of impact of a patient on their own improving their cholesterol by 11, 27, or 41 points? • For a poorly controlled hypertensive smoker with a 10-year risk of 31.3%, how impactful would improved blood pressure control or smoking cessation be? • How impactful is a cholesterol of 220 on a given patient's risk at 35 vs. 55 vs. 75 years old? • I hear that ASCVD 2013 overestimates risk, particularly for black adults? True? What about the revised pooled cohort equations of 2018? The app explicitly does not include treatment thresholds, LDL targets, estimates of impact of therapy, coronary calcium scoring, etc. I wanted the cleanest simplest tool possible for evaluating and discussing cardiovascular risk with all the other more subjective, controversial stuff out of the way. This app is written and intended for practicing clinicians like internists and family physicians; for resident physician trainees; for medical students; and of course for other clinician colleagues like NP's and PA's. Cardiologists could use this app, but you folks are focused on secondary prevention, which is an entirely different ballgame. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool.
Screenshots
Verdict
The clearest difference is update cadence: CHADS at weekly against CV Risk Estimation's monthly. CHADS also leads on rating (5.0 vs 4.8) and iOS requirement (10.1 vs 15.0). On price, ratings volume, 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.
CHADS holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
CHADS ships an update weekly, CV Risk Estimation monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | CHADS | CV Risk Estimation |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 4.8 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Weekly — better | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 10.1 — better | 15.0 |
| Further details — not scored | ||
| Size | 21 MB | 2 MB |
| Age rating | 4+ | 17+ |
| Developer | Brad McAnalley | United Health Services, Inc. |
Customer experience
CHADS
CV Risk Estimation
In-app purchases
CHADS
No in-app purchases
CV Risk Estimation
No in-app purchases








