Comparison

ABG Expert vs Complete ABG

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

Complete ABG

This medical app simplifies Arterial Blood Gas (ABG) diagnosis by focusing on the Henderson-Hasselbalch equation. It offers bedside interpretation, extended analysis with various gap calculations, and a flowchart for diagnostic approaches.

Highlights
  • Bedside ABG interpretation
  • Extended ABG analysis
  • Anion gap calculation
  • Delta Delta gap calculation
  • Osmolar gap calculation
  • Flowchart diagnostic algorithm
Features
Read full description

This app helps in ABG diagnosis and make understanding this complex subject easy. It is designed as H and and puts the HH equation at the centre stage. On the first screen it CLEARLY shows that bicarbonate is a calculated parameter. Bicarbonate changes with change in pH and and CO2. Play with the app to understand this relationship and by doing this you actually learn the HH equation. This App. works in three steps 1. Bedside ABG. 2. Extended part. 3. Flow chart 1. Bedside ABG : Useful for making decisions at the bedside. Simple and clear it tells the user as to what matters at bedside. Calculates AaDO2, on the basis of entered PaO2 and FiO2 values, considering atm.pressure of 760 mm Hg and Resp.Quotiant of 0.8. ( use our app on Aa for details ) 2. Extended ABG : Extended interpretation is provided on the basis of Anion gap, Delta Delta gap, Osmolar gap, Urinary Anion gap and urinary potassium level. 3. Flowchart : Algorithm is available to learn the approach used in this app for arriving at the diagnosis. Dr Satish Deopujari Dr Lawrence Martin Dr Vivek Shivhare Dr Shruti Deopujari About Blossom : RoundGlass Blossom is committed to enable every caregiver to run a smarter practice and deliver superior care to their patients. RoundGlass Blossom offers a comprehensive suite of solutions comprising of medical, educational and practice management applications designed to help caregiver at every step of medical practice to deliver best care. To know more, write to us at: blossom@round.glass Disclaimer: This app is based on equations available publicly in Medical domain. The information contained on this app is intended for educational purposes only. It does not constitute medical advice. You should consult a physician regarding medical diagnosis or treatment.

Screenshots

ABG Expert4 screens
Complete ABG4 screens

Verdict

The call

The clearest difference is update cadence: Complete ABG at every 3 weeks against ABG Expert's every 5 months. Complete ABG also leads on rating (5.0 vs 4.8) and iOS requirement (9.0 vs 13.0). ABG Expert's advantage is ratings volume (9 vs 1). On price, review sentiment, ads and in-app purchases 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

Complete ABG holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: ABG Expert has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

ABG Expert ships an update every 5 months, Complete ABG every 3 weeks. The most recent releases landed on October 3, 2026 and October 10, 2026 respectively.

Scorecard4 real differences · 6 level
ABG Expert versus Complete ABG: the parameters behind the verdict, then further details
ParameterABG ExpertComplete ABG
PriceFreeFree
Rating4.8 (9 ratings)5.0 (1 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings9 — better1
Update frequencyEvery 5 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS13.09.0 — better
Further details — not scored
Size2 MB45 MB
Age rating12+17+
DeveloperBrian Dale Vander Werf MD IncSatish Deopujari

Customer experience

ABG Expert

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

Complete ABG

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews9 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ABG Expert

No in-app purchases

None

Complete ABG

No in-app purchases

Questions

Is ABG Expert free?
ABG Expert is free to download, with no in-app purchases.
Is Complete ABG free?
Complete ABG is free to download, with no in-app purchases.
Which has better reviews, ABG Expert or Complete ABG?
Complete ABG is rated higher. ABG Expert averages 4.8 out of 5 from 9 ratings, while Complete ABG averages 5.0 from 1 ratings.
Do ABG Expert or Complete ABG have ads?
Neither ABG Expert nor Complete ABG shows ads.
Which is updated more often, ABG Expert or Complete ABG?
ABG Expert ships an update every 5 months, and Complete ABG every 3 weeks. Most recently, ABG Expert was updated on October 3, 2026 and Complete ABG on October 10, 2026.

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