# myPSS vs O'Dive

The clearest difference is update cadence: O'Dive at monthly against myPSS's every 42 months. O'Dive also leads on iOS requirement (13.0 vs 15.1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for myPSS against 5.0 for O'Dive. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

myPSS ships an update every 42 months, O'Dive monthly. The most recent releases landed on October 4, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | myPSS | O'Dive |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/mypss/id904666792/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/odive/id1534593720/reviews) |
| Number of ratings | 1 | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 42 months | **Monthly** |
| Monetization | Free | Free |
| Size | 64 MB | 25 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Margherita Aucelli](https://appshunter.io/developer/904666795) | [AZOTH SYSTEMS](https://appshunter.io/developer/1534593722) |

## What reviewers say

### myPSS

[App page](https://appshunter.io/ios/app/mypss/id904666792)

This application serves as a dedicated platform for members and instructors of PSS. It provides a centralized hub for information and communication within the PSS community.

**Highlights:** Dedicated platform for PSS members, Dedicated platform for PSS instructors, Centralized information hub, Community communication tool

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### O'Dive

[App page](https://appshunter.io/ios/app/odive/id1534593720)

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.

**Highlights:** Acoustic sensor technology, Gas microbubble detection, Personalized decompression analysis, Diving practice improvement, Diving safety enhancement, Sensor control interface

**In-app purchases:** none


## Frequently asked questions

### Is myPSS free?

myPSS is free to download, with no in-app purchases.

### Is O'Dive free?

O'Dive is free to download, with no in-app purchases.

### Which has better reviews, myPSS or O'Dive?

myPSS and O'Dive are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do myPSS or O'Dive have ads?

Neither myPSS nor O'Dive shows ads.

### Which is updated more often, myPSS or O'Dive?

myPSS ships an update every 42 months, and O'Dive monthly. Most recently, myPSS was updated on October 4, 2026 and O'Dive on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*