# AWU Divelog vs Simple Nitrox

The clearest difference is price: Simple Nitrox at Free against AWU Divelog's $3.99. AWU Divelog's advantage is in-app purchases (none vs 1) and update cadence (every 2 months vs every 29 months). On ads, device support and iOS requirement there is nothing between them.

Simple Nitrox is free to download; AWU Divelog costs $3.99 up front. Simple Nitrox sells 1 one-off in-app purchase. AWU Divelog asks for nothing beyond the download.

AWU Divelog ships an update every 2 months, Simple Nitrox every 29 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | AWU Divelog | Simple Nitrox |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/awu-divelog/id6450554075/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 29 months |
| Monetization | Paid | — |
| Size | 1 MB | 2 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Taber](https://appshunter.io/developer/1693881112) | [Simon Chivers](https://appshunter.io/developer/1698955737) |

## What reviewers say

### AWU Divelog

[App page](https://appshunter.io/ios/app/awu-divelog/id6450554075)

This app reads dive data from your Apple Watch Ultra, displaying and organizing your dives with detailed statistics and graphical representations. Export your dive logs in a universal format for use with other dive software.

**Highlights:** Reads dive data from Apple Watch Ultra, Lists dives with duration, depth, and temperature, Sorts and groups dives by various metrics, Graphical display of depth and temperature, Exports dives in UDDF XML format, Provides overall dive statistics

**Features:** Vision Pro support

**In-app purchases:** none


### Simple Nitrox

[App page](https://appshunter.io/ios/app/simple-nitrox/id6463395880)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Simple Nitrox Full Access | $0.99 | one-time |


## Frequently asked questions

### Is AWU Divelog free?

AWU Divelog costs $3.99, with no in-app purchases.

### Is Simple Nitrox free?

Simple Nitrox is free to download, with in-app purchases available.

### Do AWU Divelog or Simple Nitrox have ads?

Neither AWU Divelog nor Simple Nitrox shows ads.

### Which is updated more often, AWU Divelog or Simple Nitrox?

AWU Divelog ships an update every 2 months, and Simple Nitrox every 29 months. Most recently, AWU Divelog was updated on November 3, 2026 and Simple Nitrox on November 7, 2026.

---

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