# TEE Colour Doppler vs EchoRef

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.

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.

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.

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.

## The numbers

| Metric | TEE Colour Doppler | EchoRef |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/tee-colour-doppler/id752231916/reviews) | **[4.9 (1.4K ratings)](https://appshunter.io/ios/app/echoref/id1434016053/reviews)** |
| Number of ratings | 2 | **1.4K** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 24 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 65 MB | 105 MB |
| Requires iOS | **6.0** | 26.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 17+ | 17+ |
| Developer | [University Health Network](https://appshunter.io/developer/361257574) | [Rishi Kumar](https://appshunter.io/developer/1434016052) |

## What reviewers say

### TEE Colour Doppler

[App page](https://appshunter.io/ios/app/tee-colour-doppler/id752231916)

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

**In-app purchases:** none


### EchoRef

[App page](https://appshunter.io/ios/app/echoref/id1434016053)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked 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.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*