Comparison

TEE Colour Doppler vs EchoRef

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

Head to head
About

TEE Colour Doppler

This medical app visualizes cardiac blood flow using 2D and 3D color Doppler imaging. It aids in diagnosing and quantifying the severity of cardiac lesions by demonstrating normal flow patterns across heart structures.

Highlights
  • 2D and 3D echocardiography visualization
  • Color Doppler imaging for blood flow assessment
  • Rotatable 3D heart models
  • Color compare video clips
  • Demonstrates normal blood flow patterns
Read full description

Two and three-dimensional echocardiography forms the basis of assessing cardiac structure and function. The application of colour Doppler imaging is routinely performed over cardiac valves, vascular and other pathological structures to assess blood flow direction and velocity. This aids the confirmation of pathological diagnoses and quantifies the severity of these lesions. This module demonstrates which structures should be viewed using colour Doppler during the standard 2D examination. Each of the 20 standard views is accompanied by a rotatable three-dimensional heart model and a `colour compare’ video clip which simultaneously shows the two-dimensional and colour Doppler images of each view. Normal blood flow across or within various parts of the heart is shown.

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

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

EchoRef4 screens

Verdict

The call

The clearest difference is price: EchoRef at Free against TEE Colour Doppler's $4.99. EchoRef also leads on rating (4.9 vs 3.0) and update cadence (every 2 months vs every 24 months). TEE Colour Doppler's advantage is iOS requirement (6.0 vs 26.0). On ads, in-app purchases and device support 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

EchoRef is free to download; TEE Colour Doppler costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

EchoRef holds the better App Store score, 4.9 against 3.0. That said, the two scores are not equally well evidenced: EchoRef has 1.4K ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

TEE Colour Doppler ships an update every 24 months, EchoRef every 2 months. The most recent releases landed on June 3, 2026 and September 28, 2026 respectively.

Scorecard6 real differences · 4 level
TEE Colour Doppler versus EchoRef: the parameters behind the verdict, then further details
ParameterTEE Colour DopplerEchoRef
Price$4.99Free — better
Rating3.0 (2 ratings)4.9 (1.4K ratings) — better
Positive reviews—100.0% of reviews
Number of ratings21.4K — better
Update frequencyEvery 24 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPadiPhone, iPad — better
Requires iOS6.0 — better26.0
Further details — not scored
Size65 MB105 MB
Age rating17+17+
DeveloperUniversity Health NetworkRishi Kumar

Customer experience

TEE Colour Doppler

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%

EchoRef

All ratings1,373 ratings
Positive97.2%
Neutral1.4%
Negative1.4%
Written reviews12 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

TEE Colour Doppler

No in-app purchases

None

EchoRef

No in-app purchases

Questions

Is TEE Colour Doppler free?
TEE Colour Doppler costs $4.99, with no in-app purchases.
Is EchoRef free?
EchoRef is free to download, with no in-app purchases.
Which has better reviews, TEE Colour Doppler or EchoRef?
EchoRef is rated higher. TEE Colour Doppler averages 3.0 out of 5 from 2 ratings, while EchoRef averages 4.9 from 1.4K ratings.
Do TEE Colour Doppler or EchoRef have ads?
Neither TEE Colour Doppler nor EchoRef shows ads.
Which is updated more often, TEE Colour Doppler or EchoRef?
TEE Colour Doppler ships an update every 24 months, and EchoRef every 2 months. Most recently, TEE Colour Doppler was updated on June 3, 2026 and EchoRef on September 28, 2026.

Other comparisons