Comparison

Cyl Duration 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

Cyl Duration

Calculates remaining oxygen in a cylinder for ambulatory users. Input device, liter flow, and cylinder size for precise remaining hours and minutes. Provides peace of mind for oxygen users on the go.

Highlights
  • Calculate remaining oxygen hours/minutes
  • Input device settings
  • Input liter flow
  • Input cylinder size
  • Precise readout
Features
Read full description

The O2 To Go! Cylinder Duration App puts patient and technician's minds at ease. With just the touch of a button, the Cyl Duration App calculates the amount of oxygen remaining (hours/minutes) in a cylinder, giving ambulatory users assurance and peace of mind that they have enough oxygen to be on the go. The O2 To Go! Cylinder Duration App enables users to input settings for a precise readout - including device, liter flow, cylinder size and amount of oxygen remaining in the cylinder. Developed by Responsive Respiratory Inc, the High Pressure Oxygen Experts.

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

Cyl Duration3 screens
Rapid Vent Calculator4 screens

Verdict

The call

The clearest difference is review sentiment: Rapid Vent Calculator at 100% against Cyl Duration's 42%. Rapid Vent Calculator also leads on update cadence (every 4 months vs every 49 months) and rating (5.0 vs 4.6). Cyl Duration's advantage is iOS requirement (10.0 vs 13.0). On price, ads, in-app purchases and monetization model 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. Both are backed by a comparable volume of ratings — 11 and 47 respectively. Written reviews point the same way: 42% of Cyl Duration's written reviews are positive against 100% of Rapid Vent Calculator's.

UpkeepUpdate frequency

Cyl Duration ships an update every 49 months, Rapid Vent Calculator every 4 months. The most recent releases landed on October 23, 2026 and October 7, 2026 respectively.

Scorecard5 real differences · 5 level
Cyl Duration versus Rapid Vent Calculator: the parameters behind the verdict, then further details
ParameterCyl DurationRapid Vent Calculator
PriceFreeFree
Rating4.6 (11 ratings)5.0 (47 ratings) — better
Positive reviews41.7% of reviews100.0% of reviews — better
Number of ratings1147 — better
Update frequencyEvery 49 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size17 MB48 MB
Age rating12+17+
DeveloperResponsive Respiratory, Inc.JENCO LLC

Customer experience

Cyl Duration

All ratings8 ratings
Positive87.5%
Neutral0.0%
Negative12.5%
Written reviews12 reviews
Positive41.7%
Neutral8.3%
Negative50.0%

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

Cyl Duration

No in-app purchases

None

Rapid Vent Calculator

No in-app purchases

Questions

Is Cyl Duration free?
Cyl Duration 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, Cyl Duration or Rapid Vent Calculator?
Rapid Vent Calculator is rated higher. Cyl Duration averages 4.6 out of 5 from 11 ratings, while Rapid Vent Calculator averages 5.0 from 47 ratings.
Do Cyl Duration or Rapid Vent Calculator have ads?
Neither Cyl Duration nor Rapid Vent Calculator shows ads.
Which is updated more often, Cyl Duration or Rapid Vent Calculator?
Cyl Duration ships an update every 49 months, and Rapid Vent Calculator every 4 months. Most recently, Cyl Duration was updated on October 23, 2026 and Rapid Vent Calculator on October 7, 2026.

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