Comparison

CogPlay vs Ventlas

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

Head to head
About

CogPlay

Features
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Here's the translation: "For your brain health, invest 30 minutes daily in consuming digital medication. Anywhere, Anyone, Anytime. Play whenever, wherever, by investing XX minutes a day to improve your brain health. Anyone - from children to young adults, middle-aged, and seniors - can play. Anywhere - as long as there's an internet-connected device like a phone. Anytime - at any hour for my brain health. We recommend personalized content through AI suggestions. Invest in your brain health!" Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Terms of Service: https://dev.cog-play.co.kr/Agreement Privacy Policy: https://dev.cog-play.co.kr/PrivacyPolicy

About

Ventlas

Features
Read full description

Don't memorize ventilator waveforms. Watch them being made. Ventlas is an educational simulator that computes pressure, flow and volume waveforms from resistance and compliance using a single-compartment lung model. Nothing is hand-drawn: every trace is integrated from the equations, breath by breath. Because residual volume carries over between breaths, auto-PEEP emerges from the arithmetic rather than being painted in. [ ATLAS - 17 conditions ] Normal lung / ARDS / COPD and asthma / Cardiogenic pulmonary edema / Obesity and raised abdominal pressure / Atelectasis / Pulmonary fibrosis Mucus plug / Kinked tube / Tension pneumothorax / Endobronchial intubation / Circuit leak Double triggering / Flow starvation / Ineffective triggering / Auto-triggering / Reverse triggering Each condition is explained in four panels - mechanism, mechanics, waveform, clinical - with a severity slider in real units. What matters is what separates conditions that look alike: - Atelectasis vs fibrosis: does compliance improve when you raise PEEP? - Kinked tube vs mucus plug: does pressure fall in proportion to flow, or with its square? - Auto-triggering vs reverse triggering: does the negative deflection come before the breath, after it, or not at all? [ THREE MODES ] Volume control / Pressure control / Pressure support The same problem looks different in each mode, and that is the teaching point. Volume control shows it as rising pressure; pressure control shows it as falling volume. In pressure support the breath ends on flow rather than time, so high resistance stretches inspiration out. [ SIMULATOR - the patient answers back ] Work the ventilator and the patient changes over minutes. Saturation, end-tidal CO2, heart rate and mean arterial pressure are monitored continuously. An arterial blood gas takes two minutes to come back, and the result is the patient as they were when you drew it - not as they are now. Four scenarios with targets: ARDS, COPD, atelectasis, circuit leak. Every setting you change is logged with the vital signs of that moment, and the whole session can be exported at the end. [ MEASUREMENTS THAT REFUSE ] No plateau pressure without an inspiratory hold. No auto-PEEP without an expiratory hold. No compliance when patient effort or a leak makes it meaningless. Knowing why a number cannot be measured matters as much as the number. Korean and English. Works entirely offline. No account, no ads, no in-app purchases, no data collected. This is a medical education simulator. It is not a medical device and must not be used for diagnosis or to set a real ventilator. Every value shown is computed from a mathematical model and is not a recording from a real patient.

Screenshots

CogPlay4 screens
Ventlas4 screens

Verdict

The call

The clearest difference is update cadence: Ventlas at every 3 days against CogPlay's every 4 months. On price, ads, 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.

UpkeepUpdate frequency

CogPlay ships an update every 4 months, Ventlas every 3 days. The most recent releases landed on October 1, 2026 and October 9, 2026 respectively.

Scorecard1 real difference · 5 level
CogPlay versus Ventlas: the parameters behind the verdict, then further details
ParameterCogPlayVentlas
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details — not scored
Size265 MB3 MB
Age rating4+4+
DeveloperInTheTechSang Joon Park

In-app purchases

None

CogPlay

No in-app purchases

None

Ventlas

No in-app purchases

Questions

Is CogPlay free?
CogPlay is free to download, with no in-app purchases.
Is Ventlas free?
Ventlas is free to download, with no in-app purchases.
Do CogPlay or Ventlas have ads?
Neither CogPlay nor Ventlas shows ads.
Which is updated more often, CogPlay or Ventlas?
CogPlay ships an update every 4 months, and Ventlas every 3 days. Most recently, CogPlay was updated on October 1, 2026 and Ventlas on October 9, 2026.

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