Comparison

Answer Sheet with Overview vs Ventlas

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

Head to head
About

Answer Sheet with Overview

This app allows users to create and manage bubble sheets for practice exams or quizzes. It offers features like multiple answer selection, a timer, and an overview of the entire sheet for efficient review and study.

Highlights
  • Multiple answer selection
  • Customizable timer
  • Full sheet overview
  • Jump to specific questions
  • Filter incorrect/flagged answers
  • Adjustable font size
  • Auto-reset functionality
Features
Read full description

-Simple Bubble sheet/Answersheet App WIth a variety of functions, this app helps to be efficient! -Support Multiple answers You can select multiple answers. -Create a sheet with ease Just fill out a few things, and you're good to go! -Timer ON/OFF You can set a time limit just like when it's a real exam. -'?' button If you're unsure about the answer, use the '?' button for later review. -Check the answers with ease The answers are saved automatically. -Overview You can check/see the entire sheet. -Jump You can jump to a question you selected. -Filter the questions Show only the incorrect answers and the ones with '?.' -Adjust font size You can adjust the size for your preference. -Auto Reset Reset your answers and the correct answers automatically.

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

Answer Sheet with Overview4 screens
Ventlas4 screens

Verdict

The call

The clearest difference is in-app purchases: Ventlas at none against Answer Sheet with Overview's 1. Ventlas also leads on ads (none vs shown) and update cadence (every 3 days vs every 10 days). Answer Sheet with Overview's advantage is iOS requirement (13.4 vs 15.0). On price and device support there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. Answer Sheet with Overview sells 1 one-off in-app purchase. Ventlas asks for nothing beyond the download.

UpkeepUpdate frequency

Answer Sheet with Overview ships an update every 10 days, Ventlas every 3 days. The most recent releases landed on September 28, 2026 and September 23, 2026 respectively.

Scorecard4 real differences Β· 4 level
Answer Sheet with Overview versus Ventlas: the parameters behind the verdict, then further details
ParameterAnswer Sheet with OverviewVentlas
PriceFreeFree
Positive reviews50.0% of reviewsβ€”
Update frequencyEvery 10 daysEvery 3 days β€” better
AdsYesNo β€” better
In-app purchasesYesNo β€” better
MonetizationFree with in-app purchasesβ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.4 β€” better15.0
Further details β€” not scored
Size25 MB3 MB
Age rating4+4+
DeveloperRyosuke YamamotoSang Joon Park

In-app purchases

1 purchases

Answer Sheet with Overview

One-time1
  • Pro verstion$2.99
None

Ventlas

No in-app purchases

Questions

Is Answer Sheet with Overview free?
Answer Sheet with Overview is free to download, with in-app purchases available.
Is Ventlas free?
Ventlas is free to download, with no in-app purchases.
Do Answer Sheet with Overview or Ventlas have ads?
Answer Sheet with Overview shows ads; Ventlas does not.
Which is updated more often, Answer Sheet with Overview or Ventlas?
Answer Sheet with Overview ships an update every 10 days, and Ventlas every 3 days. Most recently, Answer Sheet with Overview was updated on September 28, 2026 and Ventlas on September 23, 2026.

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