Comparison

ABG Acid vs Rapid Vent Calculator

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

Head to head
About

ABG Acid

This app guides clinicians through analyzing ABGs and electrolytes to identify acid-base disorders and diagnostic ideas for ill patients. It teaches a stepwise thinking process and provides differential diagnoses with explanations, aiding patient care and clinician learning.

Highlights
  • Stepwise ABG and electrolyte analysis
  • Identifies acid-base disorders
  • Provides diagnostic ideas
  • Teaches critical thinking process
  • Includes differential diagnoses mnemonics
  • Calculates predicted pCO2 and corrected bicarbonate
Features
Read full description

ABG Acid-Base eval walks a clinician through a stepwise approach to analyse ABG's and electrolytes in order to arrive at acid-base disorders and diagnostic ideas about ill patients. It is based mainly upon a worksheet developed by Dr. Erik Rupard from the medical literature. This tool not only yields answers, but just as importantly teaches the stepwise thinking process and the necessary concepts along the way. A clinician or learner will wind up with good information that assists patient care and should wind up a little smarter and more able to do it with less assistance the next time. It is a great support for those of us clinicians who use these tests only occasionally and don't have it memorized. The differential diagnoses include the classic mnemonics like MUDPILERS, CHAMPS, CLEVER PD, and HARDUPS, with explanations and examples. The app addresses such common questions as: * What are common causes of metabolic acidosis? respiratory alkalosis? * How do I calculate predicted pCO2? corrected bicarbonate? * What is the primary acid-base disorder? * Are additional acid-base disorders present, and if so, what are they? This app is written and intended for practicing clinicians like internists, family physicians, ER docs, cardiologists, pulmonologists, intensivists, and hospitalists; for resident physician trainees; for medical students; and of course for other clinician colleagues like NP's and PA's. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool. Notes of importance: - many thresholds and cutoffs are arbitrary and debatable, so you will have to use judgment to interpret which disorders are present and to what extent when suggested by the app - the app facilitates you to evaluate the data. If you make a mistake, the app will not argue with you. It will, at the end, offer to compare your work to the disorders that the app finds using the same algorithm - patients are more than the sums of their numbers and data, and they are often unique individuals. Use this information as a starting point in the evaluation of your patient and always do your own thinking!

About

Rapid Vent Calculator

This medical app assists healthcare professionals in calculating essential ventilator settings and medication dosages for critical care. It provides rapid, accurate results for paramedics, respiratory therapists, nurses, and doctors, streamlining patient management.

Highlights
  • Effortless ventilator settings calculation
  • Rapid results for quick decision-making
  • RSI medication dosage assistant
  • User-friendly interface for medical professionals
  • Accurate patient parameter input
Features
Read full description

Rapid Vent Calculator is a clinician-focused field guide and reference tool for adult ventilator setting calculations, RSI medication dosing, and quick respiratory care references. Designed for paramedics, EMS clinicians, respiratory therapists, nurses, physicians, transport teams, ER teams, ICU clinicians, and hospital-based critical care providers, Rapid Vent Calculator helps organize common ventilator and airway calculations into a fast, practical workflow. Enter patient sex, height, weight, selected mL/kg, and metabolic acidosis status to generate adult starting-point ventilator values including respiratory rate, tidal volume, and minute ventilation. Calculations use ideal body weight and lung-protective ventilation principles for adult ventilator management. Rapid Vent Calculator also includes RSI medication dosing estimates, normal ventilator values, ABG/VBG blood gas reference charts, RASS reference guidance, dark and light mode, recent session resume, and shareable result snapshots. Whether used by EMS in the field, paramedics during transport, nurses and respiratory therapists in the ER, physicians in the hospital, or ICU clinicians managing ventilators, Rapid Vent Calculator is built to keep key adult ventilation references organized and easy to access. Key features: • Adult ventilator setting calculator • Ideal body weight-based tidal volume estimates • Lung-protective mL/kg selector • Respiratory rate, tidal volume, and minute ventilation results • Metabolic acidosis ventilation mode • RSI medication dosing estimates • Normal ventilator values reference • ABG/VBG blood gas reference charts • RASS reference guide • Shareable results snapshot • Dark and light mode • Clinician-focused workflow for EMS, transport, ER, ICU, hospital, and respiratory care use Rapid Vent Calculator is intended as a clinical reference and calculation aid for licensed healthcare professionals caring for adult patients. It is not a protocol, diagnosis tool, treatment directive, or substitute for clinical judgment. All values are starting-point estimates and must be verified against the patient’s condition, local protocols, institutional policy, and clinician scope of practice.

Screenshots

ABG Acid4 screens
Rapid Vent Calculator4 screens

Verdict

The call

The clearest difference is monetization model: Rapid Vent Calculator at free against ABG Acid's paid. Rapid Vent Calculator also leads on review sentiment (100% vs 63%) and rating (5.0 vs 4.6). On price, update cadence, 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

Rapid Vent Calculator holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Rapid Vent Calculator has 47 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 63% of ABG Acid's written reviews are positive against 100% of Rapid Vent Calculator's.

UpkeepUpdate frequency

ABG Acid ships an update every 5 months, Rapid Vent Calculator every 4 months. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

Scorecard4 real differences · 6 level
ABG Acid versus Rapid Vent Calculator: the parameters behind the verdict, then further details
ParameterABG AcidRapid Vent Calculator
PriceFreeFree
Rating4.6 (7 ratings)5.0 (47 ratings) — better
Positive reviews63.0% of reviews100.0% of reviews — better
Number of ratings747 — better
Update frequencyEvery 5 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS13.013.0
Further details — not scored
Size1 MB48 MB
Age rating17+17+
DeveloperJoshua D. steinbergJENCO LLC

Customer experience

ABG Acid

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%
Written reviews46 reviews
Positive63.0%
Neutral2.2%
Negative34.8%

Rapid Vent Calculator

All ratings47 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

ABG Acid

No in-app purchases

None

Rapid Vent Calculator

No in-app purchases

Questions

Is ABG Acid free?
ABG Acid is free to download, with no in-app purchases.
Is Rapid Vent Calculator free?
Rapid Vent Calculator is free to download, with no in-app purchases.
Which has better reviews, ABG Acid or Rapid Vent Calculator?
Rapid Vent Calculator is rated higher. ABG Acid averages 4.6 out of 5 from 7 ratings, while Rapid Vent Calculator averages 5.0 from 47 ratings.
Do ABG Acid or Rapid Vent Calculator have ads?
Neither ABG Acid nor Rapid Vent Calculator shows ads.
Which is updated more often, ABG Acid or Rapid Vent Calculator?
ABG Acid ships an update every 5 months, and Rapid Vent Calculator every 4 months. Most recently, ABG Acid was updated on October 23, 2026 and Rapid Vent Calculator on October 30, 2026.

Other comparisons