Angels Stopwatch vs EchoRef
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
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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
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.
- Point-of-care ultrasound (POCUS)
- Transthoracic echocardiography (TTE)
- Transesophageal echocardiography (TEE)
- Cardiac dimensions and valve measurements
- Hemodynamic and ultrasound calculations
- Interventional procedure lessons
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EchoRef is a free iOS ultrasonography educational reference covering point-of-care ultrasound (POCUS), transthoracic echocardiography (TTE), and transesophageal echocardiography (TEE). Additionally, it contains cardiac dimensions, native/prosthetic valve measurements, hemodynamic/ultrasound calculations, and lessons ranging from interventional procedures to mechanical circulatory support. This app is intended for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you may have regarding a medical condition, and never disregard or delay seeking professional advice because of information provided by this app. About Rishi Kumar, MD, FACC ("RK.MD") I'm an adult cardiothoracic anesthesiologist and cardiovascular ICU intensivist practicing in academic medicine. I'm passionate about teaching with free, open-access medical education. Learn more on my site: https://rk.md
Screenshots
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
Angels Stopwatch ships an update every 3 months, EchoRef every 2 months. The most recent releases landed on September 9, 2026 and September 18, 2026 respectively.
| Parameter | Angels Stopwatch | EchoRef |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | 4.9 (1.4K ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1.4K — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 67 MB | 105 MB |
| Age rating | 12+ | 17+ |
| Developer | Boehringer Ingelheim Pharma GmbH & Co.KG | Rishi Kumar |
Customer experience
Angels Stopwatch
EchoRef
In-app purchases
Angels Stopwatch
No in-app purchases
EchoRef
No in-app purchases
Questions
Is Angels Stopwatch free?
Is EchoRef free?
Which has better reviews, Angels Stopwatch or EchoRef?
Do Angels Stopwatch or EchoRef have ads?
Which is updated more often, Angels Stopwatch or EchoRef?
Other comparisons
