Cyl Duration vs Rapid Vent Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Calculate remaining oxygen hours/minutes
- Input device settings
- Input liter flow
- Input cylinder size
- Precise readout
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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.
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.
- Effortless ventilator settings calculation
- Rapid results for quick decision-making
- RSI medication dosage assistant
- User-friendly interface for medical professionals
- Accurate patient parameter input
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
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.
| Parameter | Cyl Duration | Rapid Vent Calculator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (11 ratings) | 5.0 (47 ratings) — better |
| Positive reviews | 41.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 11 | 47 — better |
| Update frequency | Every 49 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 10.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 17 MB | 48 MB |
| Age rating | 12+ | 17+ |
| Developer | Responsive Respiratory, Inc. | JENCO LLC |
Customer experience
Cyl Duration
Rapid Vent Calculator
In-app purchases
Cyl Duration
No in-app purchases
Rapid Vent Calculator
No in-app purchases
Questions
Is Cyl Duration free?
Is Rapid Vent Calculator free?
Which has better reviews, Cyl Duration or Rapid Vent Calculator?
Do Cyl Duration or Rapid Vent Calculator have ads?
Which is updated more often, Cyl Duration or Rapid Vent Calculator?
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