Comparison

EchoLab vs ABG Pro

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

Head to head
About

EchoLab

This app provides a comprehensive framework for teaching and performing quantitative echocardiography. It offers a wide array of calculations, graphical displays of equations, and integrates current guidelines for a cohesive overview of cardiac ultrasound analysis. A companion Apple Watch app is also included for on-the-go reference.

Highlights
  • Quantitative echocardiography calculations
  • Integration of ASE/EACVI guidelines
  • Analytic Engine for synthesized results
  • Companion Apple Watch app
  • Graphical display of equations
  • Medical literature references with hyperlinks
  • Wide array of echocardiographic calculations
Features
Read full description

EchoLab presents the formulas and algorithms used in an adult echocardiography laboratory. Designed by a practicing cardiologist, EchoLab provides a comprehensive framework for teaching the principles of quantitative echocardiography, or cardiac ultrasound. EchoLab's unique design permits sharing of entered and calculated data between its many formulas. Quick Entry views provide immediate access to a wide array of echocardiographic calculations. Unique to EchoLab among echocardiography applications is the powerful Analytic Engine, which synthesizes results from multiple calculations into a cohesive overview with a comprehensive summary, with integration of ASE/EACVI guidelines. The included companion app for the Apple Watch provides a ready reference when performing or interpreting echocardiograms. Available with each calculation is a graphical display of the corresponding mathematical equation, along with tips for using the calculation and medical literature references with integrated hyperlinks. Calculations and analyses include: • Aortic effective regurgitant orifice area • Aortic energy loss index • Aortic flow acceleration time with ratio to left ventricular ejection time • Aortic prosthetic paravalvular regurgitant extent • Aortic regurgitant fraction • Aortic regurgitant jet width, jet area, pressure half-time, and vena contracta • Aortic regurgitation index (for TAVR, from invasive pressure measurements) • Aortic root assessment • Aortic transvalvular flow rate • Aortic valve area (from velocity and velocity-time integrals, including dobutamine stress with projected aortic valve area) • Aortic valve resistance • Aortic valvulo-arterial impedance (Zva) • Biventricular coupling index • Body mass index • Body surface area • Cardiac output and ejection fraction (3D, area-length, Doppler, Dumesnil, Teichholz, simplified Quinones, and Simpson's methods) • Diastolic evaluation (using 2025 ASE guidelines for analysis) • Diastolic stress echocardiography • echocardiographic Pulmonary to Left Atrial Ratio (ePLAR) • Exercise stress echocardiography • Hemodynamic summary • Left atrial appendage emptying velocity • Left atrial pressure • Left atrial expansion index, function index, and reservoir strain • Left and right atrial volume and index • Left ventricular diastolic diameter index • Left ventricular dP/dt • Left ventricular fractional shortening • Left ventricular GLS • Left ventricular mass, mass index, and relative wall thickness • Left ventricular myocardial performance index • Left ventricular stroke work loss • Left ventricular wall motion score index • Maximum predicted heart rate (for dobutamine and exercise stress) • Maximum rate-pressure product (for exercise stress) • Mean arterial pressure • Mitral effective orifice area (PISA and stroke volume methods) • Mitral regurgitant fraction (PISA and stroke volume methods) • Mitral regurgitant vena contracta • Mitral valve area (continuity, PISA, and pressure half-time methods) • Mitral valve resistance • Mitral valvuloplasty score • Pericardial effusion (size and flow velocity paradoxus) • Prosthetic aortic and mitral valve assessment • Pulmonary artery systolic pressure (using tricuspid regurgitant velocity, VSD flow velocity, or pulmonary artery acceleration time), diastolic pressure, and mean pressure • Pulmonary capillary wedge pressure • Pulmonary vascular resistance • Right atrial pressure • Right ventricular-arterial coupling • Right ventricular function: dP/dt, fractional area change, free wall strain, index of myocardial performance, lateral annular plane systolic excursion, size, and tricuspid annular plane systolic excursion (TAPSE) • Shunt ratio (Qp:Qs) • Systemic vascular resistance • Tricuspid regurgitant vena contracta • Tricuspid valve area (pressure half-time method) EchoLab is a teaching and reference application, not a tool for clinical diagnosis, clinical decision-making, or echocardiography report generation.

About

ABG Pro

This medical app assists nurses, doctors, and students in interpreting arterial blood gases and osmolar gaps. It offers calculations for various blood gas parameters and provides differential diagnoses for acid-base disorders. The tool allows for customizable normal ranges and corrects the anion gap for albumin.

Highlights
  • Arterial Blood Gas interpretation
  • Osmolar Gap calculation
  • Differential diagnosis for acid-base disorders
  • Customizable normal pCO2 and Bicarb ranges
  • Anion Gap correction for Albumin
  • Delta Delta and Expected PCO2/Bicarb calculation
Features
Read full description

Arterial Blood Gas Pro. Get the features of multiple apps in one. * Great tool for nurses, doctors and medical students * A-a Gradient Calculator * Interprets Arterial Blood Gas and Osmolar Gap including triple acid base problems. * Provides differential diagnosis of each disorder in your Arterial Blood Gas and Osmolar Gap. * Allows you to define Normal pCO2 and Bicarb range for ABG [Arterial Blood Gas] interpretation. * Corrects Anion Gap for Albumin(ie Albumin g/dL x 2.5 = normal AG) in the ABG [Arterial Blood Gas] values. * Calculates Anion Gap, Osmolar Gap, Delta Delta, Expected PCO2 and Expected Bicarb. This ABG [Arterial Blood Gas] and Osmolar Gap app has be "stress tested" against 100+ triple-acid base problems. This app has been developed by a ABIM Certified Internal Medicine Physician in the US and calculations are based on: Interpretation of arterial blood gas. Pramod Sood, Gunchan Paul, and Sandeep Puri (Indian J Crit Care Med. 2010 Apr-Jun; 14(2): 57 - 64) This application is for ABG [Arterial Blood Gas] and Osmolar Gap informational/educational purposes only. Please do not use to guide actual patient care and real life ABG interpretation. I take no responsibility for incorrect answers. Please notify me ASAP if do see incorrect answers in the ABG interpretation so that I may fix them. Please rate highly if you like the app.

Screenshots

EchoLab4 screens
ABG Pro4 screens

Verdict

The call

The clearest difference is review sentiment: ABG Pro at 100% against EchoLab's 75%. ABG Pro also leads on price ($1.99 vs $4.99) and update cadence (every 2 months vs every 4 months). On ads, in-app purchases, monetization model 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

EchoLab costs $4.99 and ABG Pro $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EchoLab ships an update every 4 months, ABG Pro every 2 months. Both last shipped on November 10, 2026.

Scorecard4 real differences · 6 level
EchoLab versus ABG Pro: the parameters behind the verdict, then further details
ParameterEchoLabABG Pro
Price$4.99$1.99 — better
Rating—4.8 (4 ratings) — better
Positive reviews75.0% of reviews100.0% of reviews — better
Number of ratings—4 — better
Update frequencyEvery 4 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, Apple WatchiPhone, iPad, iPod — better
Requires iOS18.615.0 — better
Further details — not scored
Size46 MB3 MB
Age rating17+17+
DeveloperMedical Appware, LLCGDA Software

Customer experience

EchoLab

Written reviews4 reviews
Positive75.0%
Neutral0.0%
Negative25.0%

ABG Pro

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

EchoLab

No in-app purchases

None

ABG Pro

No in-app purchases

Questions

Is EchoLab free?
EchoLab costs $4.99, with no in-app purchases.
Is ABG Pro free?
ABG Pro costs $1.99, with no in-app purchases.
Do EchoLab or ABG Pro have ads?
Neither EchoLab nor ABG Pro shows ads.
Which is updated more often, EchoLab or ABG Pro?
EchoLab ships an update every 4 months, and ABG Pro every 2 months. Most recently, EchoLab was updated on November 10, 2026 and ABG Pro on November 10, 2026.

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