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175 of 175 storefronts
Content in en-CA
Content in en-CA
Information
Preview 2 platforms
iPhone 3 images
iPad 3 images
What’s New Version 5.9
Added: Global search function (magnifying glass in top right)
Added: LV thrombus POCUS case
Added: On-X mitral valve with stuck leaflet and mitral PVL plug 3D TEE videos
Added: Calculators for aortic pulsatility index (API) and Wilkins Score
Updated: Small user interface tweaks, codebase optimizations
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
Accessibility
ipadiphonemacrealityDevicetvoswatch
Version history 25 versions
Build 881718878v5.92026-05-19 22:25:36
Added: Global search function (magnifying glass in top right)
Added: LV thrombus POCUS case
Added: On-X mitral valve with stuck leaflet and mitral PVL plug 3D TEE videos
Added: Calculators for aortic pulsatility index (API) and Wilkins Score
Updated: Small user interface tweaks, codebase optimizations
Build 880892148v5.82025-12-22 20:30:49
Added: Calculators for Aortic Valve Area (Continuity), Stroke Volume & CO (LVOT), E/e′ Ratio, RVSP Estimate, Bernoulli Gradient, A–a Gradient
Updated: Calculator descriptions
Updated: Restructured cardiac equations section
Updated: Ultrasound physics and hemodynamic equations
Updated: User interface fixes throughout the app
Updated: Matomo SDK to 7.8.0
Build 878176195v5.72025-11-10 00:22:28
Added: Hemodynamic and ultrasound equations
Added: Highlighting text when searching
Added: Slide to favorite or unfavorite calculations
Added: iPad interface
Update: Reduced boilerplate code
Update: Fixed native mitral stenosis values
Update: Restructured changelog scheme
Update: More subtle liquid glass for references
Build 877513023v5.62025-09-15 17:43:10
Updated: Complete re-write of the codebase to transition from Storyboard to SwiftUI
Updated: Conform elements to iOS 26's liquid glass user interface
Build 873096550v5.52025-03-10 07:23:11
⁃ Added: Paravertebral nerve block video
⁃ Updated: Lossless compression of all media elements
⁃ Updated: Rewrote codebase to utilize single structured tuple-based arrays, eliminate unnecessary UI updates, streamline switch statements, etc.
- Overall, EchoTools' compressed binary size decreased from 208.8 MB (version 5.4) to 84 MB (version 5.5).
Build 866535162v5.42024-06-08 07:11:06
⁃ Added: Dilated coronary sinus (PLSVC) TEE video
⁃ Updated: Matomo framework, consistency across strings
Build 863826797v5.32024-02-18 15:19:39
⁃ Added: Navitor and Evolut-R TAVR valves
⁃ Added: Pulmonary velocity acceleration time (PVAT)
⁃ Added: Concentric LVH, aortic dissection flap fenestration, and quadricuspid aortic valve TEE videos
⁃ Updated: TAVR valve information
Build 862588912v5.22023-12-31 14:31:01
⁃ Added: Air bronchograms, cardiac standstill, and transhepatic IVC POCUS videos
⁃ Added: Septal myectomy and P2 restriction (type III) TEE videos
⁃ Updated: 3D TEE tricuspid valve video, 3-point compression ultrasound for lower extremity DVT video
Build 860613139v5.12023-10-12 15:01:40
⁃ Added: Proximal lower extremity DVT compression, left pleural effusion, and Tetralogy of Fallot POCUS videos
⁃ Added: Perceval sutureless aortic valve
⁃ Added: Edwards Mitris bioprosthetic mitral valve
⁃ Added: SVC collapsibility index
Build 855512090v5.02023-06-06 02:37:11
- Added: 3D TEE mitral annular calcification (MAC), serratus plane block, spinal cord TEE, and type B dissection POCUS videos
⁃ Added: IVC distensibility index (DI)
⁃ Updated: IMH TEE video, D-Sign POCUS video, IVC POCUS video
Build 855314349v4.92023-03-03 19:29:22
⁃ Added: Femoral vascular, gastric, apical long-axis, apical two-chamber, apical five-chamber, and suprasternal aortic arch POCUS videos
⁃ Updated: POCUS subcostal TTE video
Build 853835942v4.82023-01-08 20:41:07
- Added: LV diastology image for IVRT
- Added: Libman-Sacks endocarditis TEE video
- Added: Lung point and “D-sign” POCUS videos
Build 853288164v4.72022-11-21 22:37:37
- Added: Calculators for regurgitant lesions (Valves → Native Valves → click top right calculator icon)
- Added: Ebstein’s anomaly POCUS video
- Added: Subclavian vein/artery vascular video
- Added: Mitral valve leaflet perforation and primum ASD TEE videos
Build 852932986v4.62022-10-24 01:20:01
⁃ Added: Medtronic Avalus aortic valve
⁃ Added: RVAD MCS TEE video
⁃ Added: Pecto-Intercostal Fascial Block (PIFB) video
⁃ Updated: Combined Links and Sources
Build 852687452v4.52022-10-10 20:29:50
⁃ Added: Autosomal dominant polycystic kidney disease (ADPKD) POCUS video
⁃ Updated: Fixed AVPlayerViewController controls on videos
⁃ Updated: Standardized auto-layout constraints
⁃ Updated: Updated deprecated code for the in-app Review system
Build 851500660v4.42022-09-27 17:55:42
⁃ Added: Prosthesis Evaluation section for Prosthetic Valves
⁃ Added: Matomo SDK Integration (removed Firebase)
⁃ Updated: Higher resolution icons with lossless compression
⁃ Updated: Popups for references
⁃ Updated: Transitioned from CocoaPods to Swift Package Manager
Build 850515590v4.32022-06-30 01:54:11
⁃ Added: Pop-up framework containing references for prosthetic valve sections
⁃ Updated: Aortic, mitral, and tricuspid bioprosthetic valve information
Build 849852732v4.22022-06-06 19:36:45
- Added: Ross procedure and intracardiac clot TEE videos
- Added: Right heart catheterization (RHC) video
- Added: Adductor canal peripheral nerve block video
- Updated: Coronary angiography section
- Updated: Standardized video sizes
- Updated: UIButton to UIImageView elements under the Anatomy tab
Build 848299005v4.12022-04-26 20:48:31
⁃ Added: Coronary angiogram section (still under construction)
⁃ Added: Midesophageal left atrial appendage (LAA) and 5 chamber view videos
⁃ Updated: Changed autoresizing masks throughout the application to improve compatibility with smaller iPhones screen sizes
Build 847851473v4.02022-03-22 16:13:47
⁃ Added: Midesophageal ascending aorta (long/short axis), upper esophageal aortic arch (long/short axis), transgastric right ventricular inflow, and a few transgastric tricuspid TEE videos
⁃ Updated: Table icons for References tab
Build 847314353v3.92022-02-23 16:20:11
Added: Midesophageal 2 chamber TEE video
Added: Aortic intramural hematoma, fungal endocarditis, subaortic membrane, and paravalvular leak videos
Updated: Combined “References” and “About” tabbed menu bar content to clean up the interface
Updated: Prosthetic valve image transparency
Build 846531368v3.82022-01-11 09:21:44
Added: Gallbladder and spleen (left upper quadrant) abdominal POCUS videos
Added: New video framework to allow videos to be expanded and viewed in landscape orientation
Added: Thumbnail icons to menus
Added: Option to click on valve images to expand
Updated: User interface elements
Build 845475449v3.72021-12-12 00:48:41
Added: Ocular POCUS exam
Updated: About section to utilize picker view UI element
Updated: Beginning Equations section under References
Build 844501470v3.62021-10-06 08:16:25
- Added: Carcinoid tricuspid valve, diaphragm M-mode POCUS, and abnormal bubble study videos
- Updated: TAPSE and tricuspid regurgitation images
Build 843969924v3.52021-09-08 20:54:47
- Added: References section (with sections for equations and links, both still under development)
- Added: Separate sections for “About” - Author, Changelog, Contribute, Disclaimer & Terms, and References
- Added: Images for PI jet and RA minor axis
- Updated: Tab bar and social media icons
No pricing data captured yet — comparisons appear once the app has paid storefronts or in-app purchases.
Availability 175 of 175 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | Free | 1.4k | 4.9 | 5.9 |
| IT | it | Free | 221 | 4.7 | 5.9 |
| DE | de-DE | Free | 162 | 4.8 | 5.9 |
| MX | es-MX | Free | 147 | 4.9 | 5.9 |
| BR | pt-BR | Free | 137 | 4.9 | 5.9 |
| IN | en-GB | Free | 102 | 4.9 | 5.9 |
| UA | en-GB | Free | 68 | 5.0 | 5.9 |
| CO | es-MX | Free | 67 | 4.9 | 5.9 |
| CA | en-CA | Free | 52 | 4.7 | 5.9 |
| ES | es-ES | Free | 50 | 4.9 | 5.9 |
| AR | es-MX | Free | 46 | 5.0 | 5.9 |
| TR | en-GB | Free | 40 | 4.9 | 5.9 |
| VN | en-GB | Free | 38 | 4.9 | 5.9 |
| GB | en-GB | Free | 37 | 4.9 | 5.9 |
| CL | es-MX | Free | 35 | 4.8 | 5.9 |
| SA | en-GB | Free | 32 | 4.9 | 5.9 |
| FR | fr-FR | Free | 31 | 4.8 | 5.9 |
| AU | en-AU | Free | 29 | 4.8 | 5.9 |
| RU | ru | Free | 29 | 5.0 | 5.9 |
| ID | en-GB | Free | 27 | 5.0 | 5.9 |
| CN | zh-Hans-CN | Free | 25 | 4.9 | 5.9 |
| RO | en-GB | Free | 25 | 5.0 | 5.9 |
| TW | zh-Hant-TW | Free | 24 | 5.0 | 5.9 |
| EG | en-GB | Free | 22 | 4.7 | 5.9 |
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| EC | es-MX | Free | 18 | 5.0 | 5.9 |
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| IL | en-GB | Free | 9 | 4.0 | 5.9 |
| AE | en-GB | Free | 8 | 4.4 | 5.9 |
| AT | de-DE | Free | 7 | 4.7 | 5.9 |
| CH | de-CH | Free | 7 | 4.7 | 5.9 |
| CR | es-MX | Free | 7 | 5.0 | 5.9 |
| HU | en-GB | Free | 7 | 5.0 | 5.9 |
| KZ | en-GB | Free | 7 | 5.0 | 5.9 |
| NO | en-GB | Free | 7 | 5.0 | 5.9 |
| PT | pt-PT | Free | 7 | 5.0 | 5.9 |
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| HN | es-MX | Free | 5 | 5.0 | 5.9 |
| NI | es-MX | Free | 5 | 4.8 | 5.9 |
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| TZ | en-GB | Free | 5 | 5.0 | 5.9 |
| UZ | en-GB | Free | 5 | 5.0 | 5.9 |
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| GE | en-GB | Free | 4 | 5.0 | 5.9 |
| GH | en-GB | Free | 4 | 4.8 | 5.9 |
| IE | en-GB | Free | 4 | 5.0 | 5.9 |
| KE | en-GB | Free | 4 | 4.0 | 5.9 |
| KR | ko | Free | 4 | 5.0 | 5.9 |
| MA | en-GB | Free | 4 | 5.0 | 5.9 |
| SG | en-GB | Free | 4 | 5.0 | 5.9 |
| SV | es-MX | Free | 4 | 5.0 | 5.9 |
| JP | ja | Free | 3 | 4.3 | 5.9 |
| LV | en-GB | Free | 3 | 5.0 | 5.9 |
| RS | en-GB | Free | 3 | 4.3 | 5.9 |
| VE | es-MX | Free | 3 | 5.0 | 5.9 |
| AZ | en-GB | Free | 2 | 4.5 | 5.9 |
| DZ | en-GB | Free | 2 | 5.0 | 5.9 |
| KG | en-GB | Free | 2 | 5.0 | 5.9 |
| LB | en-GB | Free | 2 | 5.0 | 5.9 |
| LK | en-GB | Free | 2 | 5.0 | 5.9 |
| MK | en-GB | Free | 2 | 5.0 | 5.9 |
| NG | en-GB | Free | 2 | 4.0 | 5.9 |
| NZ | en-AU | Free | 2 | 5.0 | 5.9 |
| SE | sv | Free | 2 | 4.5 | 5.9 |
| TN | en-GB | Free | 2 | 5.0 | 5.9 |
| UG | en-GB | Free | 2 | 4.0 | 5.9 |
| UY | en-GB | Free | 2 | 5.0 | 5.9 |
| AL | en-GB | Free | 1 | 5.0 | 5.9 |
| AO | en-GB | Free | 1 | 5.0 | 5.9 |
| BE | en-GB | Free | 1 | 4.0 | 5.9 |
| BH | en-GB | Free | 1 | 5.0 | 5.9 |
| BN | en-GB | Free | 1 | 5.0 | 5.9 |
| BO | es-MX | Free | 1 | 5.0 | 5.9 |
| CD | en-GB | Free | 1 | 5.0 | 5.9 |
| CI | fr-FR | Free | 1 | 4.0 | 5.9 |
| CM | fr-FR | Free | 1 | 1.0 | 5.9 |
| CY | en-GB | Free | 1 | 1.0 | 5.9 |
| DK | en-GB | Free | 1 | 5.0 | 5.9 |
| EE | en-GB | Free | 1 | 5.0 | 5.9 |
| GA | fr-FR | Free | 1 | 2.0 | 5.9 |
| GM | en-GB | Free | 1 | 5.0 | 5.9 |
| IQ | en-GB | Free | 1 | 5.0 | 5.9 |
| JM | en-GB | Free | 1 | 5.0 | 5.9 |
| LR | en-GB | Free | 1 | 5.0 | 5.9 |
| LY | en-GB | Free | 1 | 5.0 | 5.9 |
| MG | en-GB | Free | 1 | 5.0 | 5.9 |
| MM | en-GB | Free | 1 | 5.0 | 5.9 |
| MO | zh-Hant-HK | Free | 1 | 5.0 | 5.9 |
| MU | en-GB | Free | 1 | 5.0 | 5.9 |
| MV | en-GB | Free | 1 | 5.0 | 5.9 |
| NP | en-GB | Free | 1 | 5.0 | 5.9 |
| PA | es-MX | Free | 1 | 5.0 | 5.9 |
| RW | en-GB | Free | 1 | 5.0 | 5.9 |
| SI | en-GB | Free | 1 | 5.0 | 5.9 |
| SN | en-GB | Free | 1 | 5.0 | 5.9 |
| TJ | en-GB | Free | 1 | 5.0 | 5.9 |
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Change log 29 changes · CA
✎
releaseNotes updated
Added: Global search function (magnifying glass in top right)
Added: LV thrombus POCUS case
Added: On-X mitral valve with stuck leaflet and mitral PVL plug 3D T
✎
description updated
EchoRef is a free iOS ultrasonography educational reference covering point-of-care ultrasound (POCUS), transthoracic echocardiography (TTE), and transesophageal
✎
subtitle updated
Ultrasonography Reference
✎
name updated
EchoRef
◆
Version 5.9 released
Added: Global search function (magnifying glass in top right)
Added: LV thrombus POCUS case
Added: On-X mitral valve with stuck leaflet and mitral PVL plug 3D TEE videos
Added: Calculators for aortic pulsatility index (API) and Wilkins Scor
◆
Version 5.8 released
Added: Calculators for Aortic Valve Area (Continuity), Stroke Volume & CO (LVOT), E/e′ Ratio, RVSP Estimate, Bernoulli Gradient, A–a Gradient
Updated: Calculator descriptions
Updated: Restructured cardiac equations section
Updated: Ultrasou
◆
Version 5.7 released
Added: Hemodynamic and ultrasound equations
Added: Highlighting text when searching
Added: Slide to favorite or unfavorite calculations
Added: iPad interface
Update: Reduced boilerplate code
Update: Fixed native mitral stenosis values
Updat
◆
Version 5.6 released
Updated: Complete re-write of the codebase to transition from Storyboard to SwiftUI
Updated: Conform elements to iOS 26's liquid glass user interface
◆
Version 5.5 released
⁃ Added: Paravertebral nerve block video
⁃ Updated: Lossless compression of all media elements
⁃ Updated: Rewrote codebase to utilize single structured tuple-based arrays, eliminate unnecessary UI updates, streamline switch statements, etc.
◆
Version 5.4 released
⁃ Added: Dilated coronary sinus (PLSVC) TEE video
⁃ Updated: Matomo framework, consistency across strings
◆
Version 5.3 released
⁃ Added: Navitor and Evolut-R TAVR valves
⁃ Added: Pulmonary velocity acceleration time (PVAT)
⁃ Added: Concentric LVH, aortic dissection flap fenestration, and quadricuspid aortic valve TEE videos
⁃ Updated: TAVR valve information
◆
Version 5.2 released
⁃ Added: Air bronchograms, cardiac standstill, and transhepatic IVC POCUS videos
⁃ Added: Septal myectomy and P2 restriction (type III) TEE videos
⁃ Updated: 3D TEE tricuspid valve video, 3-point compression ultrasound for lower extremity D
◆
Version 5.1 released
⁃ Added: Proximal lower extremity DVT compression, left pleural effusion, and Tetralogy of Fallot POCUS videos
⁃ Added: Perceval sutureless aortic valve
⁃ Added: Edwards Mitris bioprosthetic mitral valve
⁃ Added: SVC collapsibility index
◆
Version 5.0 released
- Added: 3D TEE mitral annular calcification (MAC), serratus plane block, spinal cord TEE, and type B dissection POCUS videos
⁃ Added: IVC distensibility index (DI)
⁃ Updated: IMH TEE video, D-Sign POCUS video, IVC POCUS video
◆
Version 4.9 released
⁃ Added: Femoral vascular, gastric, apical long-axis, apical two-chamber, apical five-chamber, and suprasternal aortic arch POCUS videos
⁃ Updated: POCUS subcostal TTE video
◆
Version 4.8 released
- Added: LV diastology image for IVRT
- Added: Libman-Sacks endocarditis TEE video
- Added: Lung point and “D-sign” POCUS videos
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Version 4.7 released
- Added: Calculators for regurgitant lesions (Valves → Native Valves → click top right calculator icon)
- Added: Ebstein’s anomaly POCUS video
- Added: Subclavian vein/artery vascular video
- Added: Mitral valve leaflet perforation and prim
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Version 4.6 released
⁃ Added: Medtronic Avalus aortic valve
⁃ Added: RVAD MCS TEE video
⁃ Added: Pecto-Intercostal Fascial Block (PIFB) video
⁃ Updated: Combined Links and Sources
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Version 4.5 released
⁃ Added: Autosomal dominant polycystic kidney disease (ADPKD) POCUS video
⁃ Updated: Fixed AVPlayerViewController controls on videos
⁃ Updated: Standardized auto-layout constraints
⁃ Updated: Updated deprecated code for the in-app Review sy
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Version 4.4 released
⁃ Added: Prosthesis Evaluation section for Prosthetic Valves
⁃ Added: Matomo SDK Integration (removed Firebase)
⁃ Updated: Higher resolution icons with lossless compression
⁃ Updated: Popups for references
⁃ Updated: Transitioned from Cocoa
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Version 4.3 released
⁃ Added: Pop-up framework containing references for prosthetic valve sections
⁃ Updated: Aortic, mitral, and tricuspid bioprosthetic valve information
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Version 4.2 released
- Added: Ross procedure and intracardiac clot TEE videos
- Added: Right heart catheterization (RHC) video
- Added: Adductor canal peripheral nerve block video
- Updated: Coronary angiography section
- Updated: Standardized video sizes
- Upd
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Version 4.1 released
⁃ Added: Coronary angiogram section (still under construction)
⁃ Added: Midesophageal left atrial appendage (LAA) and 5 chamber view videos
⁃ Updated: Changed autoresizing masks throughout the application to improve compatibility with small
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Version 4.0 released
⁃ Added: Midesophageal ascending aorta (long/short axis), upper esophageal aortic arch (long/short axis), transgastric right ventricular inflow, and a few transgastric tricuspid TEE videos
⁃ Updated: Table icons for References tab
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Version 3.9 released
Added: Midesophageal 2 chamber TEE video
Added: Aortic intramural hematoma, fungal endocarditis, subaortic membrane, and paravalvular leak videos
Updated: Combined “References” and “About” tabbed menu bar content to clean up the interface
U
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Version 3.8 released
Added: Gallbladder and spleen (left upper quadrant) abdominal POCUS videos
Added: New video framework to allow videos to be expanded and viewed in landscape orientation
Added: Thumbnail icons to menus
Added: Option to click on valve images
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Version 3.7 released
Added: Ocular POCUS exam
Updated: About section to utilize picker view UI element
Updated: Beginning Equations section under References
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Version 3.6 released
- Added: Carcinoid tricuspid valve, diaphragm M-mode POCUS, and abnormal bubble study videos
- Updated: TAPSE and tricuspid regurgitation images
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Version 3.5 released
- Added: References section (with sections for equations and links, both still under development)
- Added: Separate sections for “About” - Author, Changelog, Contribute, Disclaimer & Terms, and References
- Added: Images for PI jet and RA m