STABLEize vs O2 Calculator Companion
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
STABLEize
This medical reference app provides comprehensive guidelines and tools for managing sick infants. It covers essential modules like Sugar, Temperature, Airway, Blood Pressure, Lab Work, and Emotional Support, along with detailed information and animations on congenital heart disease.
- Neonatal assessment and care modules
- 22 congenital heart disease animations
- 4 medical calculators
- Umbilical catheter insertion depth guide
- Ductal dependent CHD flow visualization
- Palliative procedure illustrations
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In addition to The S.T.A.B.L.E. Program Module Guidelines: Sugar, Temperature, Airway, Blood pressure, Lab work, Emotional support for the family, this app includes a BONUS menu of 22 severe cardiac anomalies to increase understanding of how blood flows through the heart in the setting of ductal dependent and not ductal dependent congenital heart disease (CHD). - 4 calculators: corrected gestational age, temperature converter (Fahrenheit to Celsius and vice-versa), umbilical artery and venous catheter insertion depth, weight converter (grams to pounds/ounces and vice-versa). - Under Cardiac Anomalies you’ll find animations and information on 22 severe forms of congenital heart disease. The MP4 videos demonstrate how blood flows through the heart with the various forms of CHD, and for ductal-dependent lesions, the severe impact of ductal closure on blood flow. Other animations feature normal heart anatomy, hypercyanotic (tet) spell, and balloon atrial septostomy (Rashkind procedure). Also included are illustrations of palliative procedures (PDA stent, balloon valvuloplasty, BT shunt, RVOT stent, central shunt, pulmonary artery band). STABLE stands for the 6 assessment and care modules in the program: Sugar, Temperature, Airway, BP, Lab work, Emotional support. This app includes the following items: - Sugar module: General Guidelines for sick infants and infants at increased risk for hypoglycemia, IV treatment of a blood sugar less than 50 mg/dL (2.8 mmol/L), useful information about umbilical catheters and actions to correct umbilical artery catheter malpositions. - Temperature module: General Guidelines (hypothermic classifications, monitoring, rewarming after accidental hypothermia), and neuroprotective hypothermia checklist and neurologic exam. - Airway module: monitoring guidelines, respiratory distress descriptions, endotracheal tube sizes and insertion depth, blood gas evaluation, signs of a pneumothorax, and treatment of a pneumothorax. - Blood pressure module: assessment for shock and treatment of shock, including how to mix dopamine hydrochloride to constitute an 800 microgram/mL IV fluid solution. - Lab work module: risk factors for neonatal infection, clinical signs of infection, and laboratory evaluation prior to transport to an intensive care unit. How to calculate the absolute neutrophil count and immature to total ratio. - Emotional support for the family module: the various emotions that parents may be experiencing and how to help families who are experiencing the crisis of a sick newborn. The Cardiac Anomalies menu includes short descriptions and MP4 videos and illustrations for: - Normal Heart and Lungs - Aortic Valve Stenosis - Atrial septal defect - Atrioventricular canal - Coarctation of aorta - Double outlet right ventricle - Ebstein anomaly - Hypoplastic left heart syndrome - Interrupted aortic arch – type B - Patent ductus arteriosus - Pulmonary atresia with intact ventricular septum (IVS) - Pulmonary atresia with IVS and sinusoids - Pulmonary atresia with ventricular septal defect - Total anomalous pulmonary venous connection (TAPVC) – Cardiac, Supracardiac, Infracardiac) - Tetralogy of Fallot (moderate stenosis) - Tetralogy of Fallot (ductal dependent) - Transposition of the Great Arteries - Tricuspid atresia - Truncus arteriosus - Ventricular septal defect Includes illustrations of palliative procedures: balloon atrial septostomy (Rashkind procedure), PDA stent, balloon valvuloplasty, Blalock-Taussig (BT) shunt, right ventricular outflow tract (RVOT) stent, central shunt, pulmonary artery band.
O2 Calculator Companion
This app helps EMS professionals quickly estimate oxygen tank duration in real-time. It's designed for field use with a fast, intuitive interface and works offline, eliminating guesswork in critical care scenarios.
- Real-time oxygen tank duration estimation
- Supports multiple tank types
- Adjustable PSI and flow rate settings
- Automatic safety margin calculations
- Smart alerts for O₂ levels
- Offline functionality
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The O₂ Calculator Companion is a mission-critical tool designed for EMS professionals, paramedics, and emergency responders. Quickly and accurately estimate oxygen tank duration in real-time based on tank type, PSI, and flow rate — all in the palm of your hand. Built to perform under pressure, this app helps eliminate guesswork in critical care scenarios where every second counts. Designed for Field Use: Fast, intuitive interface optimized for iPhone and iPad Minimal taps to enter tank data and get immediate duration estimates Works offline — no internet needed in remote or chaotic environments Key Features: Supports multiple tank types (D, E, M, Jumbo D, etc.) Adjustable PSI and flow rate settings Automatic safety margin factored into calculations (default 200 PSI) Smart alerts for Insufficient O₂ and Sufficient O₂ Custom caution zone alerts before depletion Responsive modal-style warnings to enhance decision-making in the field Built for Real-World EMS: Ideal for ambulance crews, flight medics, field hospitals, and disaster response teams Created by EMS professionals with real frontline experience Use it during patient transport, at scene, or in clinical training environments Data & Privacy: No personal data collected. No login required. Just reliable calculations when you need them most. Why O₂ Calculator Companion? Paramedics, EMTs, and emergency responders rely on rapid, accurate tools. The O₂ Calculator Companion empowers you to confidently manage oxygen resources with a simple, high-clarity interface and built-in alerting logic — no clutter, no distractions, just performance. Join the thousands of EMS professionals already optimizing care with smarter oxygen monitoring.
Screenshots
Verdict
The clearest difference is price: O2 Calculator Companion at $4.99 against STABLEize's $24.99. STABLEize's advantage is ratings volume (16 vs 1) and chart position (#21 vs unranked). On rating, update cadence, ads and in-app purchases 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
STABLEize costs $24.99 and O2 Calculator Companion $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 4.9 for STABLEize against 5.0 for O2 Calculator Companion. That said, the two scores are not equally well evidenced: STABLEize has 16 ratings behind it against 1, so its average is the more settled of the two.
STABLEize ships an update every 3 weeks, O2 Calculator Companion every 2 weeks. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.
| Parameter | STABLEize | O2 Calculator Companion |
|---|---|---|
| Price | $24.99 | $4.99 — better |
| Rating | 4.9 (16 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 16 — better | 1 |
| Update frequency | Every 3 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | #21 — better | — |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 57 MB | 2 MB |
| Age rating | 17+ | 4+ |
| Developer | The STABLE Program | Joseph Perry |
Customer experience
STABLEize
O2 Calculator Companion
In-app purchases
STABLEize
No in-app purchases
O2 Calculator Companion
No in-app purchases
Questions
Is STABLEize free?
Is O2 Calculator Companion free?
Which has better reviews, STABLEize or O2 Calculator Companion?
Do STABLEize or O2 Calculator Companion have ads?
Which is updated more often, STABLEize or O2 Calculator Companion?
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