Oxygen Cylinder Autonomy Calc vs O'Dive
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Oxygen Cylinder Autonomy Calc
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Must-have App for first aid staff and submarine divers. Calculates the autonomy of the oxygen cylinder and the air cylinder. The first aid personnel will be able to calculate the autonomy of a cylinder of oxygen through the knowledge of its capacity and oxygen supply applied to the patient. Diving enthusiasts will finally be able to easily: - CALCULATE THE LITERS OF YOUR TANK - CALCULATE AIR CONSUMPTION IN A SPECIFIC DEPTH - CALCULATE THE AUTONOMY OF YOUR TANK There is also an All In One section where you will be guided step by step through the entire calculation of your dive, following the order you will find out how many minutes of diving you will have.
O'Dive
This app uses patented acoustic sensor technology to analyze gas microbubbles detected after a dive. It helps divers assess their decompression procedures and improve their safety and practice based on personalized acoustic measurements.
- Acoustic sensor technology
- Gas microbubble detection
- Personalized decompression analysis
- Diving practice improvement
- Diving safety enhancement
- Sensor control interface
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O'Dive's unique and patented technology includes an acoustic sensor connected to a smartphone app and a server with specialised analysis capabilities. O'Dive's objectives are: - Indicating to divers, by taking into consideration gas microbubbles detected, the adequation of their decompression procedures with their own person and diving practice; - Help them improve their practice and safety. The personalization of the diving procedure is based on the acoustic measurement of circulating gas microbubbles detected post-dive in the divers' venous system. O'Dive app allows to control the sensor by being the interface between the sensor, the server and the user. O'Dive is a technological innovation developped by AZOTH SYSTEMS.
Screenshots
Verdict
The clearest difference is iOS requirement: Oxygen Cylinder Autonomy Calc at 9.2 against O'Dive's 13.0. On price, 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Oxygen Cylinder Autonomy Calc ships an update every 2 months, O'Dive monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.
| Parameter | Oxygen Cylinder Autonomy Calc | O'Dive |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 2 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.2 — better | 13.0 |
| Further details — not scored | ||
| Size | 16 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | DIGITAL IDEATORS INNOVATIONS SRL | AZOTH SYSTEMS |
In-app purchases
Oxygen Cylinder Autonomy Calc
No in-app purchases
O'Dive
No in-app purchases
Questions
Is Oxygen Cylinder Autonomy Calc free?
Is O'Dive free?
Do Oxygen Cylinder Autonomy Calc or O'Dive have ads?
Which is updated more often, Oxygen Cylinder Autonomy Calc or O'Dive?
Other comparisons
