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App Store Apps > Medical > ABG Expert
ABG Expert icon

ABG Expert

by Brian Dale Vander Werf MD Inc · Medical · Free
On the App Store since June 2014 · Data updated 2026-10-17
App Store

ABG Expert is made and published by Brian Dale Vander Werf MD Inc. AppBrain is an independent app data site and isn't affiliated with Brian Dale Vander Werf MD Inc. The app name, icon, screenshots and description belong to Brian Dale Vander Werf MD Inc and are shown as published on the App Store.

AppBrain's verdict

Established
Rating on App Store
4.78
9 ratings
Last updated
July 7, 2025

It doesn't have enough ratings yet to judge what users think.

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Releases

Updates seen on the App Store
Version
3.4
Launched
June 2014

No changelog data

User feedback

Ratings and reviews on the App Store

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Technology

Found in the app by AppBrain
Price
Free
App size
1.57 MB
Content rating
Medium

Technologies used by ABG Expert

About the app and developer

About ABG Expert

ABG Expert is a medical app developed by Brian Dale Vander Werf MD Inc.

What is the rating of ABG Expert?

ABG Expert is rated 4.78 out of 5 stars, based on 9 ratings.

Is ABG Expert free?

ABG Expert is free. The app size is 1.57 MB. The latest version available is 3.4. The last update was on July 7, 2025.

What are the requirements for ABG Expert?

The app has a content rating of Medium Maturity. The app has been available on the App Store since June 2014.

Developer information for Brian Dale Vander Werf MD Inc

Brian Dale Vander Werf MD Inc

Address:

Frequently asked questions about ABG Expert

Is ABG Expert free?

Yes. ABG Expert is free on the App Store.

Is ABG Expert still available?

Yes. ABG Expert is on the App Store, and the last update we saw was on July 7, 2025.

How large is ABG Expert?

ABG Expert is 1.57 MB.

Is ABG Expert suitable for children?

App Store gives ABG Expert a medium maturity rating, so it is not meant for young children.

How do people rate ABG Expert?

ABG Expert scores 4.78 out of 5 stars, from 9 ratings on the App Store.

Who made ABG Expert?

ABG Expert was developed by Brian Dale Vander Werf MD Inc. It is listed in the medical category on the App Store.

What are the best alternatives to ABG Expert?

People looking at ABG Expert also look at these medical apps: Complete ABG Analysis, Mosby's PDQ Respiratory Care, Sepsis Clinical Guide, ABGs NOW! Lite, Ventilator Mode Map.

Share ABG Expert

Store listing

By Brian Dale Vander Werf MD Inc, from the App Store
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Screenshots by Brian Dale Vander Werf MD Inc, from the the App Store listing
Description by Brian Dale Vander Werf MD Inc Written by the developer, not by AppBrain. Click to read.
ABG Expert™ is simply the best acid-base analysis tool with features available in no other app. Designed and tested by practicing physicians, ABG Expert is trusted by medical professionals for unparalleled accuracy, flexibility, and power while remaining completely intuitive to use.


Whether you are a physician, nurse, respiratory therapist, paramedic, or student, ABG Expert is your ideal acid base analysis app.




Accuracy-

• ABG Expert has been validated using extensive testing under real-world conditions.

• No need to worry about entering physiologically impossible data by mistake. Data is checked for plausibility and for internal consistency using the Henderson-Hasselbalch equation.

• An accurate analysis depends on an accurate anion gap. ABG Expert has you covered with automatic correction of the anion gap when albumin is provided.

• Never again wonder about how a result was obtained. Detailed explanations include easy-to-understand equations so you can be sure the calculations are correct.


Flexibility-

• Need the arterial blood gas analysis, but not the anion gap or A-a gradient? No problem. ABG Expert can analyze the data for all three results separately or together.

• Set the normal anion gap range based on the normal range at your institution. Or, use your patient’s own baseline anion gap to maximize your sensitivity to detect disorders.

• Caring for an 80-year-old patient in Denver? Provide age and barometric pressure, and ABG Expert automatically adjusts interpretation of the A-a gradient.

• Need more specificity? Adjust the normal delta gap range based on the literature you follow in your practice.

• ABG Expert works as well in Bangkok as it does in Boston with full support for SI and non-SI units.


Power-

• Color-coded results allow for rapid analysis in critical situations. One additional click gives you a detailed differential diagnosis and additional recommendations.

• Concerned about a new problem in your patient with advanced COPD? ABG Expert can adjust its calculations for chronic respiratory conditions so you can detect additional disorders that are missed by other apps.

• Detailed explanations of disorders integrate ABG, anion gap, and A-a gradient results providing individualized answers like no textbook can.

• Refine your differential diagnosis even further with the included osmolal gap and urine anion gap calculators.

• ABG Expert combines beauty and brains with optimization for iOS devices running iOS 13 and later.


Disclaimer:
Brian Dale Vander Werf MD Inc. has made every effort to ensure the accuracy of the information included in this product. However, the authors, developers, and Brian Dale Vander Werf MD Inc. are not responsible for errors or omissions or for any consequences from the use of this product and make no warranty, expressed or implied, with respect to the currency, completeness, or accuracy of the contents of this product. This product has been designed as a supplemental source of information for medical professionals. This product is not a substitute for clinical judgment, and the use of the information produced by this product in a particular situation remains the responsibility of the medical professional.

Privacy Policy:
This product does not collect, store, or transmit individually identifiable health information.

References:
NEJM. 2014; 371: 1434.
Medicine. 1980; 59(3): 161.
Kidney International. 2009; 76: 1239.
Emerg Med. 1990; 19: 1310.
Clin J Am Soc Nephrol. 2007; 2: 162.
Nat Rev Nephrol. 2010; 6: 274.
Anaesthesia. 2008; 63: 294.
Clin J Am Soc Nephrol. 2012; 7: 671.
The ICU Book. 3rd ed. Lippincott Williams & Wilkins; 2007.
Official page on the App Store
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