Comparison

AHA ACLS vs ABG Calculator

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

Head to head
About

AHA ACLS

This app provides clinicians with a digital tool to assist in running cardiac arrest codes and delivering advanced cardiac life support (ACLS) at the bedside. It features the latest AHA recommendations and includes intuitive access to algorithms, drug dosing, and timers for efficient patient care.

Highlights
  • 4 ACLS algorithms (cardiac arrest, tachycardia, bradycardia, post-arrest)
  • Latest 2025 AHA ACLS content
  • Drug therapy and dosing
  • Easy-to-read timers
  • CPR and epinephrine logging
  • Rapid transition to post-arrest care
Features
Currently charting
Read full description

The AHA ACLS app is the American Heart Association's (AHA) officially endorsed digital health solution to assist clinicians in running codes and delivering bedside ACLS care with actual patients. The app was developed by Harvard-trained physicians, in collaboration with the AHA, to help fellow physicians, nurses, physician assistants, nurse practitioners, and EMTs deliver the highest level of advanced cardiac life support (ACLS) at the point-of-care. It began as a project to assist clinicians within Massachusetts General Hospital (MGH), a Harvard Medical School teaching hospital—and then expanded to have a global scope after significant positive impact was demonstrated. Importantly, real-time feedback from our clinician users continuously drives improvements in app design, features, and function so that you will have the best experience providing life-saving care at the bedside. The AHA ACLS app is the only one to have all content vetted by both the AHA science team and practicing Harvard-affiliated physicians. It also features the latest 2025 release of AHA recommendations for ACLS. We owe it to our patients to use the best digital health tools to give them the highest chance of surviving acute life-threatening cardiac illnesses. To this end, we have developed a low cost, intuitive, and rigorously vetted mobile app to assist clinicians— including in all stages of training—and enhance ACLS care at the bedside. Features: - Intuitive design to rapidly access 4 ACLS algorithms (i.e. cardiac arrest, tachycardia with pulse, bradycardia with pulse, and post cardiac arrest care) - Includes all recently released 2025 ACLS content including drug therapy and dosing, reversible causes, etc. - Easy-to-read timers and ability to log rounds of CPR, epinephrine, and defibrillations - Button within cardiac arrest algorithm that allows for rapid transition to post cardiac arrest care pathway once patient achieves ROSC - All content rigorously vetted by AHA science team and practicing Harvard-affiliated physicians We continue to iterate based on real-time clinician feedback, so that you will have the best experience providing life-saving care at the bedside. AHA ACLS offers an auto-renewing annual subscription at $3.99/year with a 3-day free trial. You will have unlimited access to all content while you maintain an active subscription. Payment will be charged to the credit card connected to your Apple ID Account when you confirm the initial subscription purchase. Subscriptions automatically renew unless auto-renew is turned off at least 24-hours before the end of the current subscription period. Your account will be charged for renewal within 24-hours prior to the end of the current period. You may manage your subscription and auto-renewal may be turned off by going to your Account Settings after the purchase. Any unused portion of the free trial period, if offered, will be forfeited when you purchase a subscription. You can read more about our terms and conditions in the app.

About

ABG Calculator

This medical tool quickly analyzes arterial blood gas results for healthcare professionals. It calculates acid-base status, anion gap, and compensation, offering comprehensive diagnoses offline. Save and share patient results for efficient clinical decision-making.

Highlights
  • Offline arterial blood gas analysis
  • Instant acid-base disorder determination
  • Anion gap and compensation assessment
  • Flexible unit options
  • Save and share patient results
  • Results history and search
Features
Read full description

ABG Calculator is designed for physicians, nurses, and medical professionals who need a quick, accurate way to analyze arterial blood gas results and determine acid-base status. Simply enter the essential values—pH, PaCO₂, HCO₃, along with electrolytes like sodium, chloride, and albumin—and watch as the app instantly analyzes your patient's acid-base status, calculates anion gap, and provides a comprehensive diagnosis. Multiple units available: mmHg, kPa, mmol/L, mEq/L, g/dL, g/L for all parameters to accommodate your preferred measurement system. Key Features: No internet needed - works completely offline Easy Data Input: Quickly enter ABG values and electrolytes with flexible unit options Comprehensive Analysis: Instant determination of acid-base disorders including respiratory and metabolic components Anion Gap Calculation: Automatic calculation of anion gap and albumin-corrected anion gap Compensation Assessment: Evaluates whether compensation is appropriate, partial, or absent Save Results: Store your analyses with custom names for later reference Share Results: Easily share your calculations with colleagues via text or messaging apps Results History: Access all your saved ABG analyses in a searchable, sortable list Whether you're in the ICU, emergency department, or on the hospital floor, ABG Calculator helps you quickly interpret blood gas results with confidence. Download ABG Calculator and enhance your clinical decision-making today! Medical Disclaimer The ABG Calculator App is designed as a tool to assist healthcare professionals in analyzing arterial blood gas results. It is not intended to replace professional medical judgment or advice. Always consult with a qualified healthcare provider for interpretation of medical test results and before making any medical decisions.

Screenshots

AHA ACLS4 screens
ABG Calculator3 screens

Verdict

The call

AHA ACLS and ABG Calculator both sit at 4.9 stars, but that hides the real split: 100% of ABG Calculator's written reviews are positive against 26% of AHA ACLS's. ABG Calculator also leads on in-app purchases (none vs 1) and iOS requirement (11.0 vs 15.1). AHA ACLS's advantage is price (Free vs $9.99) and ratings volume (370 vs 2). On rating, update cadence, ads and device support 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

AHA ACLS is free to download; ABG Calculator costs $9.99 up front. AHA ACLS sells 1 in-app purchase, starting at $3.99 per year. ABG Calculator asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for AHA ACLS against 5.0 for ABG Calculator. That said, the two scores are not equally well evidenced: AHA ACLS has 370 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 26% of AHA ACLS's written reviews are positive against 100% of ABG Calculator's.

UpkeepUpdate frequency

AHA ACLS ships an update every 2 months, ABG Calculator every 3 months. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.

Scorecard7 real differences · 4 level
AHA ACLS versus ABG Calculator: the parameters behind the verdict, then further details
ParameterAHA ACLSABG Calculator
PriceFree — better$9.99
Rating4.9 (370 ratings)5.0 (2 ratings) — better
Positive reviews26.3% of reviews100.0% of reviews — better
Number of ratings370 — better2
Update frequencyEvery 2 months — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationSubscriptionPaid — better
Best chart rank#47 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.111.0 — better
Further details — not scored
Size48 MB8 MB
Age rating17+4+
DeveloperMassachusetts General HospitalSAGA Virtual Tecnologia Ltda

Customer experience

AHA ACLS

All ratings277 ratings
Positive99.3%
Neutral0.4%
Negative0.4%
Written reviews80 reviews
Positive26.3%
Neutral3.8%
Negative70.0%

ABG Calculator

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

AHA ACLS

Reported bugs

3 issues
  • App fails to load information despite subscription payment
  • Users locked out of app mid-code
  • Unexpected app crashes during critical moments

Requested features

10 requests
  • Multiple log storage with dates
  • More detailed code logging with event documentation (IO access, medications, rhythms)
  • End code button and pause compressions feature
  • Real-time log tracking for back-charting
  • LVAD algorithm inclusion
Show 5 more
  • Additional medication counters (bicarbonate, calcium)
  • One-time purchase option instead of subscription
  • Free basic version with premium features behind paywall
  • Voluntary donation model instead of mandatory subscription
  • Actual time reflection in logs for accurate timekeeping

ABG Calculator

Not enough reviews yet to summarise bugs or requests.

In-app purchases

1 purchases

AHA ACLS

Subscriptions1
  • ACLS Pro3 Days trial$3.991 Year
None

ABG Calculator

No in-app purchases

Questions

Is AHA ACLS free?
AHA ACLS is free to download, with in-app purchases available.
Is ABG Calculator free?
ABG Calculator costs $9.99, with no in-app purchases.
Which has better reviews, AHA ACLS or ABG Calculator?
ABG Calculator is rated higher. AHA ACLS averages 4.9 out of 5 from 370 ratings, while ABG Calculator averages 5.0 from 2 ratings.
Do AHA ACLS or ABG Calculator have ads?
Neither AHA ACLS nor ABG Calculator shows ads.
Which is updated more often, AHA ACLS or ABG Calculator?
AHA ACLS ships an update every 2 months, and ABG Calculator every 3 months. Most recently, AHA ACLS was updated on October 27, 2026 and ABG Calculator on October 24, 2026.

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