Comparison

Angels Stopwatch vs EchoRef

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

Head to head
About

Angels Stopwatch

This medical app functions as a digital stopwatch designed to help stroke teams track Door to Therapy time. It records procedure times, provides detailed performance history, and allows users to set target times with visual feedback. Gamified elements like badges and levels encourage faster treatment times.

Highlights
  • Door to Therapy time monitoring
  • Procedure time logging
  • Detailed performance history
  • Customizable target times
  • Visual status bar feedback
  • Achievement badges and levels
  • Data sharing with RESQ Registry
Features
Read full description

The Stroke Stopwatch app is developed as a digital stop watch that allows Stroke teams to monitor their Door to Therapy time with the aim of improving their time to treatment. With every 15 minutes saved in symptom-to-treatment time outcomes for stoke patients have been shown to improve significantly. You can record each of your procedures’ times, and access a detailed history screen listing out your previous logs and overall performance. You can also challenge yourself by changing your target time which will update the visual colouring of the status bar as you get closer to your target. You can also achieve badges/levels based on how well you perform, so that you can keep reaching for the shortest time possible! Features and functionalities · Timer · CT Scan log · Blood test time log · Groin time log · Needle time log · Update target time option · Update Door-to-Needle time if timer was not initially started at the door · Questions to better qualify each procedure · History review of your past logs · Share data collected with RESQ Registry · Information about each individual log · Summary of your overall performance including standard deviation

About

EchoRef

This educational reference app provides comprehensive information on point-of-care ultrasound (POCUS), echocardiography, and cardiac measurements. It includes lessons on interventional procedures and hemodynamic calculations for medical professionals.

Highlights
  • Point-of-care ultrasound (POCUS)
  • Transthoracic echocardiography (TTE)
  • Transesophageal echocardiography (TEE)
  • Cardiac dimensions and valve measurements
  • Hemodynamic and ultrasound calculations
  • Interventional procedure lessons
Features
Read full description

Echocardiography and point-of-care ultrasound organized for the bedside. EchoRef is a comprehensive echocardiography and ultrasound reference for physicians, nurses, advanced practice clinicians, sonographers, medical students, and other healthcare learners. Review TEE, TTE, and POCUS videos, check cardiac measurements and diagnostic criteria, evaluate native and prosthetic valves, and perform commonly used ultrasound and hemodynamic calculations, all in one focused reference. FEATURES • Educational video library covering 2D and 3D TEE, interventional echocardiography, mechanical circulatory support, and clinical cases • POCUS instruction for cardiac, lung, abdominal, vascular, and peripheral nerve block examinations • Cardiac anatomy measurements and reference values for chamber size, ventricular function, diastology, and vascular structures • Native valve assessment for aortic, mitral, tricuspid, and pulmonic stenosis and regurgitation • Prosthetic valve reference for surgical valves, TAVR, and prosthesis evaluation • Ultrasound and hemodynamic calculators for valve area, cardiac output, ventricular function, filling pressures, vascular resistance, shunts, fluid responsiveness, and more • Cardiac equations, hemodynamic reference values, and ultrasound physics • Clinical protocols, focused examination guidance, findings atlas, and reporting documentation • Acquisition guidance, measurement tips, common pitfalls, and related clinical content • Global search, favorites, related links, and personal notes EchoRef connects ultrasound physics, image acquisition, echocardiographic interpretation, and bedside decision-making. Whether you are learning standard views, reviewing an unfamiliar finding, evaluating valve disease, or checking a calculation, the app makes relevant information easy to find. Created by Rishi Kumar, MD, FACC (“RK.MD”), an academic adult cardiothoracic anesthesiologist and cardiovascular ICU intensivist committed to free, open-access medical education. Learn more at https://rk.md EchoRef is intended for educational and informational purposes only. It does not provide medical advice and is not a substitute for professional judgment, diagnosis, or treatment. Clinical findings and calculations must be independently verified and interpreted in the context of the individual patient. Seek guidance from a qualified healthcare professional regarding any medical condition. Do not disregard or delay professional medical advice because of information provided by this app.

Screenshots

Angels Stopwatch4 screens
EchoRef4 screens

Verdict

The call

The clearest difference is ratings volume: EchoRef at 1.4K against Angels Stopwatch's 1. Angels Stopwatch's advantage is iOS requirement (10.0 vs 26.0). On price, rating, update cadence and ads 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Angels Stopwatch against 4.9 for EchoRef. That said, the two scores are not equally well evidenced: EchoRef has 1.4K ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Angels Stopwatch ships an update every 3 months, EchoRef every 2 months. The most recent releases landed on November 4, 2026 and November 2, 2026 respectively.

Scorecard2 real differences · 8 level
Angels Stopwatch versus EchoRef: the parameters behind the verdict, then further details
ParameterAngels StopwatchEchoRef
PriceFreeFree
Rating5.0 (1 ratings) — better4.9 (1.4K ratings)
Positive reviews—100.0% of reviews
Number of ratings11.4K — better
Update frequencyEvery 3 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS10.0 — better26.0
Further details — not scored
Size67 MB104 MB
Age rating12+17+
DeveloperBoehringer Ingelheim Pharma GmbH & Co.KGRishi Kumar

Customer experience

Angels Stopwatch

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

EchoRef

All ratings1,387 ratings
Positive97.2%
Neutral1.4%
Negative1.4%
Written reviews12 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Angels Stopwatch

No in-app purchases

None

EchoRef

No in-app purchases

Questions

Is Angels Stopwatch free?
Angels Stopwatch is free to download, with no in-app purchases.
Is EchoRef free?
EchoRef is free to download, with no in-app purchases.
Which has better reviews, Angels Stopwatch or EchoRef?
Angels Stopwatch is rated higher. Angels Stopwatch averages 5.0 out of 5 from 1 ratings, while EchoRef averages 4.9 from 1.4K ratings.
Do Angels Stopwatch or EchoRef have ads?
Neither Angels Stopwatch nor EchoRef shows ads.
Which is updated more often, Angels Stopwatch or EchoRef?
Angels Stopwatch ships an update every 3 months, and EchoRef every 2 months. Most recently, Angels Stopwatch was updated on November 4, 2026 and EchoRef on November 2, 2026.

Other comparisons