# myPSS vs Diving logbook

The clearest difference is rating: myPSS at 5.0 against Diving logbook's 4.2. myPSS also leads on in-app purchases (none vs 3) and device support (3 vs 1). Diving logbook's advantage is update cadence (monthly vs every 42 months) and ratings volume (96 vs 1). On price and ads there is nothing between them.

Both are free to download. Diving logbook sells 3 in-app purchases, starting at $1.99 per month. myPSS asks for nothing beyond the download.

myPSS holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Diving logbook has 96 ratings behind it against 1, so its average is the more settled of the two.

myPSS ships an update every 42 months, Diving logbook monthly. Both last shipped on November 6, 2026.

## The numbers

| Metric | myPSS | Diving logbook |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mypss/id904666792/reviews)** | [4.2 (96 ratings)](https://appshunter.io/ios/app/diving-logbook-dive-number/id949480835/reviews) |
| Number of ratings | 1 | **96** |
| Positive reviews | — | 76.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 42 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 64 MB | 71 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Margherita Aucelli](https://appshunter.io/developer/904666795) | [Denys Dykusha](https://appshunter.io/developer/930478942) |

## 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


### Diving logbook

[App page](https://appshunter.io/ios/app/diving-logbook-dive-number/id949480835)

Easily log all your scuba diving details, from dive sites and conditions to equipment and observations. Track your dive history, including depth, time, and gas usage, with unlimited entries and an extensive dive site database. Connect with dive partners and record your underwater experiences.

**Highlights:** Unlimited dive entries, Detailed dive parameters (depth, time, gas), Dive site mapping and database, Record dive conditions and equipment, Log notes and marine life sightings, Partner confirmation for dives, Dive statistics and total dive time

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| support DiveNumber every month | $1.99 | per month |
| support DiveNumber every year | $1.99 | per year |
| support Dive Number one time | $4.99 | one-time |


## Frequently asked questions

### Is myPSS free?

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

### Is Diving logbook free?

Diving logbook is free to download, with in-app purchases available.

### Which has better reviews, myPSS or Diving logbook?

myPSS is rated higher. myPSS averages 5.0 out of 5 from 1 ratings, while Diving logbook averages 4.2 from 96 ratings.

### Do myPSS or Diving logbook have ads?

Neither myPSS nor Diving logbook shows ads.

### Which is updated more often, myPSS or Diving logbook?

myPSS ships an update every 42 months, and Diving logbook monthly. Most recently, myPSS was updated on November 6, 2026 and Diving logbook on November 6, 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.*