Comparison

ABG Expert vs Ventilator Training Alliance

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

Head to head
About

ABG Expert

This medical tool provides accurate and flexible acid-base analysis for healthcare professionals. It offers detailed explanations, customizable ranges, and advanced features like anion gap correction and A-a gradient adjustments for various patient conditions and locations.

Highlights
  • Validated accuracy with real-world testing
  • Plausibility checks for physiologically impossible data
  • Automatic anion gap correction with albumin
  • Detailed explanations with equations
  • Separate or combined analysis of ABG, anion gap, A-a gradient
  • Customizable normal ranges for anion gap and delta gap
  • Age and barometric pressure adjustments for A-a gradient
  • Support for SI and non-SI units
  • Color-coded results and differential diagnoses
  • Adjustments for chronic respiratory conditions
Features
Read full description

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.

About

Ventilator Training Alliance

Access a comprehensive library of training materials and product information for medical professionals. This app offers free mobile access to how-to videos, manuals, and guides for critical ventilator equipment, developed in partnership with leading manufacturers.

Highlights
  • Multi-vendor training library
  • Product materials for medical professionals
  • How-to videos
  • Product manuals
  • Reference guides
  • Free mobile access
Read full description

The Ventilator Training Alliance app provides a multi-vendor library of training and product materials for medical professionals. Created through a partnership between leading ventilator manufacturers and Allego, Inc., the app provides free mobile access to how-to videos, product manuals, and reference guides for ventilator equipment that is critical to treating patients suffering from respiratory distress. Manufacturers are responsible for their own content.

Screenshots

ABG Expert4 screens
Ventilator Training Alliance4 screens

Verdict

The call

The clearest difference is update cadence: Ventilator Training Alliance at fortnightly against ABG Expert's every 5 months. Ventilator Training Alliance also leads on ratings volume (74 vs 9). On price, rating, review sentiment and ads 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.8 for ABG Expert against 4.9 for Ventilator Training Alliance. That said, the two scores are not equally well evidenced: Ventilator Training Alliance has 74 ratings behind it against 9, so its average is the more settled of the two. Written reviews are what separate them: 100% of ABG Expert's written reviews are positive against 93% of Ventilator Training Alliance's.

UpkeepUpdate frequency

ABG Expert ships an update every 5 months, Ventilator Training Alliance fortnightly. Both last shipped on October 20, 2026.

Scorecard2 real differences · 8 level
ABG Expert versus Ventilator Training Alliance: the parameters behind the verdict, then further details
ParameterABG ExpertVentilator Training Alliance
PriceFreeFree
Rating4.8 (9 ratings)4.9 (74 ratings) — better
Positive reviews100.0% of reviews — better93.3% of reviews
Number of ratings974 — better
Update frequencyEvery 5 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.012.0 — better
Further details — not scored
Size2 MB87 MB
Age rating12+4+
DeveloperBrian Dale Vander Werf MD IncAllego, Inc.

Customer experience

ABG Expert

All ratings9 ratings
Positive88.9%
Neutral11.1%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Ventilator Training Alliance

All ratings75 ratings
Positive97.3%
Neutral1.3%
Negative1.3%
Written reviews15 reviews
Positive93.3%
Neutral0.0%
Negative6.7%

In-app purchases

None

ABG Expert

No in-app purchases

None

Ventilator Training Alliance

No in-app purchases

Questions

Is ABG Expert free?
ABG Expert is free to download, with no in-app purchases.
Is Ventilator Training Alliance free?
Ventilator Training Alliance is free to download, with no in-app purchases.
Which has better reviews, ABG Expert or Ventilator Training Alliance?
Ventilator Training Alliance is rated higher. ABG Expert averages 4.8 out of 5 from 9 ratings, while Ventilator Training Alliance averages 4.9 from 74 ratings.
Do ABG Expert or Ventilator Training Alliance have ads?
Neither ABG Expert nor Ventilator Training Alliance shows ads.
Which is updated more often, ABG Expert or Ventilator Training Alliance?
ABG Expert ships an update every 5 months, and Ventilator Training Alliance fortnightly. Most recently, ABG Expert was updated on October 20, 2026 and Ventilator Training Alliance on October 20, 2026.

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