Comparison

ABGs NOW! Lite vs Mechanical Ventilation Expert

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

Head to head
About

ABGs NOW! Lite

Master arterial blood gas interpretation with this engaging medical app. It offers a calculator for quick answers, practice modes with hints, and a challenge mode to test your skills. Detailed analysis is provided for any incorrect interpretations.

Highlights
  • ABG Calculator
  • Practice Mode with Hints
  • Challenge Mode
  • Detailed Analysis
  • Knowledge Strengthening
Features
Read full description

ABGs NOW!™ is a fun, engaging way for both students and professionals to strengthen their knowledge of arterial blood gases. The app features a calculator, providing immediate answers, a practice mode that guides the learner with helpful hints, and a challenge mode where learners can put their ABG skills to the test. Both practice and challenge modes provide detailed analysis for any missed interpretations. ​ ABGs NOW!™ offers an entertaining way to learn a challenging topic.

About

Mechanical Ventilation Expert

This medical app assists intensive care physicians in managing patients with acute respiratory failure. It provides advice on mechanical ventilation parameters and helps determine optimal respiratory support methods based on research findings.

Highlights
  • Mechanical ventilation parameter correction
  • Respiratory support method selection
  • Non-invasive oxygenation index estimation
  • Guidance on invasive and non-invasive ventilation
  • Educational tool for physicians
  • Based on multicenter research
Features
Read full description

Caution! This app is intended for intensive care physicians. If you are NOT a physician and would like to use it anyway, please consult your physician before using this app or making any medical decisions. This app has endorsement for usage in the Russian Federation. Many doctors deal with the treatment of patients with varying degrees of acute respiratory failure (ARF). But the choice of the optimal method and, especially, the timely correction of the parameters of invasive and non-invasive mechanical lung ventilation often cause difficulties, especially for young doctors. Unfortunately, expensive ventilation machines, without their skillful use, are not a guarantee of an improvement in the mortality rate in ARF. This has been especially evident during the COVID-19 pandemic. In international clinical practice, it is customary to determine the degree of ARF by the oxygenation index (the ratio of the partial pressure of oxygen in arterial blood (PaO2) to the fraction of inspired oxygen (FiO2)). This indicator is also included in most "severity of illness" scoring systems (SOFA, APACHE II-III, etc.). However PaO2 estimation is only possible after collecting the arterial blood for laboratory monitoring of blood gases, making it costly and invasive. In 2020-2021 a multicenter research was carried out at five clinical hospitals in Volgograd, Russia, which included 1038 patients with acute lung injury and acute respiratory distress syndrome against the background of viral (COVID-19) and bacterial pneumonia. The goals of the research were firstly, to develop a non-invasive method for determining the oxygenation index (PaO2 / FiO2) based on oxygen saturation (SpO2), and secondly, to define general criteria for correcting the parameters of invasive and non-invasive mechanical ventilation. This application is based on the results of the research. The relationship between SpO2 and PaO2 index values was determined for various FiO2 and types of respiratory support. The app also implements the general principle of oxygen therapy - from less to more invasive. The app allows the user not only to choose the most effective method of respiratory support, but also timely learn about the need for its correction. Every clinician knows that the mortality rate in patients with ARF is greatly influenced by the validity of the beginning and end of Invasive Mechanical Ventilation treatment - and this app solves this problem. The educational effect of this app should also be noted. It will help doctors to quickly master and more competently use expensive ventilation machines, which, of course, will have a beneficial effect on the results of treatment of patients with ARF. The following sources were used to create the app: 1. Brown SM, Grissom CK, Moss M, Rice TW, Schoenfeld D, Hou PC, Thompson BT, Brower RG; NIH/NHLBI PETAL Network Collaborators. Nonlinear Imputation of Pao2/Fio2 From Spo2/Fio2 Among Patients With Acute Respiratory Distress Syndrome. Chest. 2016 Aug;150(2):307-13. doi: 10.1016/j.chest.2016.01.003. Epub 2016 Jan 19. PMID: 26836924; PMCID: PMC4980543. 2. Bilan N, Dastranji A, Ghalehgolab Behbahani A. Comparison of the spo2/fio2 ratio and the pao2/fio2 ratio in patients with acute lung injury or acute respiratory distress syndrome. J Cardiovasc Thorac Res. 2015;7(1):28-31. doi: 10.15171/jcvtr.2014.06. Epub 2015 Mar 29. PMID: 25859313; PMCID: PMC4378672. 3. Yoshida T, Takegawa R, Ogura H. [Ventilatory strategy for ARDS]. Nihon Rinsho. 2016 Feb;74(2):279-84. Japanese. PMID: 26915253. 4. Fan E, Brodie D, Slutsky AS. Acute Respiratory Distress Syndrome: Advances in Diagnosis and Treatment. JAMA. 2018 Feb 20;319(7):698-710. doi: 10.1001/jama.2017.21907. PMID: 29466596. 5. Петров, В. И. Эволюция клинико-фармакологических и терапевтических принципов лечения инфекции COVID-19 / Петров В. И. [и др. ]. - Москва : ГЭОТАР-Медиа, 2021. - 312 с. - DOI: 10.33029/9704-6386-4-ECPC-2021-1-312. - ISBN 978-5-9704-6386-4.

Screenshots

ABGs NOW! Lite4 screens
Mechanical Ventilation Expert3 screens

Verdict

The call

The clearest difference is rating: ABGs NOW! Lite at 3.2 against Mechanical Ventilation Expert's 1.8. Mechanical Ventilation Expert's advantage is ads (none vs shown) and review sentiment (33% vs 0%). On price, ratings volume, in-app purchases 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

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

ReceptionRating · Positive reviews · Number of ratings

ABGs NOW! Lite holds the better App Store score, 3.2 against 1.8. Both are backed by a comparable volume of ratings — 5 and 8 respectively. Written reviews complicate that: 0% of ABGs NOW! Lite's written reviews are positive against 33% of Mechanical Ventilation Expert's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ABGs NOW! Lite ships an update every 2 months, Mechanical Ventilation Expert every 2 weeks. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

Scorecard5 real differences · 5 level
ABGs NOW! Lite versus Mechanical Ventilation Expert: the parameters behind the verdict, then further details
ParameterABGs NOW! LiteMechanical Ventilation Expert
PriceFreeFree
Rating3.2 (5 ratings) — better1.8 (8 ratings)
Positive reviews0.0% of reviews33.3% of reviews — better
Number of ratings58 — better
Update frequencyEvery 2 monthsEvery 2 weeks — better
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better13.0
Further details — not scored
Size122 MB1 MB
Age rating12+17+
DeveloperBytewise Studios, LLCValeriy Streltsov

Customer experience

ABGs NOW! Lite

All ratings5 ratings
Positive60.0%
Neutral0.0%
Negative40.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Mechanical Ventilation Expert

All ratings7 ratings
Positive14.3%
Neutral14.3%
Negative71.4%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

In-app purchases

None

ABGs NOW! Lite

No in-app purchases

None

Mechanical Ventilation Expert

No in-app purchases

Questions

Is ABGs NOW! Lite free?
ABGs NOW! Lite is free to download, with no in-app purchases.
Is Mechanical Ventilation Expert free?
Mechanical Ventilation Expert is free to download, with no in-app purchases.
Which has better reviews, ABGs NOW! Lite or Mechanical Ventilation Expert?
ABGs NOW! Lite is rated higher. ABGs NOW! Lite averages 3.2 out of 5 from 5 ratings, while Mechanical Ventilation Expert averages 1.8 from 8 ratings.
Do ABGs NOW! Lite or Mechanical Ventilation Expert have ads?
ABGs NOW! Lite shows ads; Mechanical Ventilation Expert does not.
Which is updated more often, ABGs NOW! Lite or Mechanical Ventilation Expert?
ABGs NOW! Lite ships an update every 2 months, and Mechanical Ventilation Expert every 2 weeks. Most recently, ABGs NOW! Lite was updated on October 10, 2026 and Mechanical Ventilation Expert on October 24, 2026.

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