Comparison

ABG Expert vs SmartIntern

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

SmartIntern

This medical analyzer helps healthcare professionals identify sepsis using the latest SOFA score criteria, as recommended by recent JAMA publications. It provides an intuitive, evidence-based approach to sepsis diagnosis at the point of care, ensuring users are up-to-date with cutting-edge medical guidelines.

Highlights
  • SOFA score-based sepsis identification
  • Up-to-date with JAMA 2016 guidelines
  • Intuitive point-of-care tool
  • Evidence-based algorithms
  • Treatment suggestions
  • ICD10 code suggestions
Features
Read full description

SIRS criteria is so 2015! Recent changes published in JAMA (Feb 23, 2016) have revised the definition of sepsis. The proposal put forth by The Third International Consensus have recommended the transition away from SIRS criteria towards the more clinically relevant Sequential Organ Failure Assessment (SOFA) score. In an effort to be the most up-to-date, evidence-based app on the market, SmartIntern has published an intuitive medical analyzer to help identify sepsis right at the point of care. This app uses the established algorithms outlined in the published literature and offers the easy-to-use approach one would expect from SmartIntern. Be up-to-date and follow the most cutting-edge publications. Every physician deserves a SmartIntern!!! Joongheum Park, MD - Update! (3/13) • We updated a small addition to the treatment section as Surviving Sepsis Campaign (SSC) Executive Committee has suggested how to approach to those with sepsis which is diagnosed based on the new definition. (Mar 2016). • The app now suggests the ICD10 code of severe sepsis (R65.20) when the case fits into the sepsis of new definition (as suggested in JAMA 2016) • + Minor bug fixes.

Screenshots

ABG Expert4 screens
SmartIntern4 screens

Verdict

The call

The clearest difference is update cadence: SmartIntern at every 9 days against ABG Expert's every 5 months. SmartIntern also leads on iOS requirement (8.0 vs 13.0). On price, rating, review sentiment and ratings volume 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 4.6 for SmartIntern. Both are backed by a comparable volume of ratings — 9 and 17 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

ABG Expert ships an update every 5 months, SmartIntern every 9 days. The most recent releases landed on October 20, 2026 and June 3, 2026 respectively.

Scorecard2 real differences · 8 level
ABG Expert versus SmartIntern: the parameters behind the verdict, then further details
ParameterABG ExpertSmartIntern
PriceFreeFree
Rating4.8 (9 ratings) — better4.6 (17 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings917 — better
Update frequencyEvery 5 monthsEvery 9 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.08.0 — better
Further details — not scored
Size2 MB21 MB
Age rating12+17+
DeveloperBrian Dale Vander Werf MD IncAvoMD, Inc.

Customer experience

ABG Expert

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

SmartIntern

All ratings17 ratings
Positive94.1%
Neutral0.0%
Negative5.9%
Written reviews7 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ABG Expert

No in-app purchases

None

SmartIntern

No in-app purchases

Questions

Is ABG Expert free?
ABG Expert is free to download, with no in-app purchases.
Is SmartIntern free?
SmartIntern is free to download, with no in-app purchases.
Which has better reviews, ABG Expert or SmartIntern?
ABG Expert is rated higher. ABG Expert averages 4.8 out of 5 from 9 ratings, while SmartIntern averages 4.6 from 17 ratings.
Do ABG Expert or SmartIntern have ads?
Neither ABG Expert nor SmartIntern shows ads.
Which is updated more often, ABG Expert or SmartIntern?
ABG Expert ships an update every 5 months, and SmartIntern every 9 days. Most recently, ABG Expert was updated on October 20, 2026 and SmartIntern on June 3, 2026.

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