# AWU2UDDF vs DiveCore

The clearest difference is in-app purchases: AWU2UDDF at none against DiveCore's 3. AWU2UDDF also leads on iOS requirement (16.0 vs 18.0). DiveCore's advantage is update cadence (every 4 days vs every 14 months). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. DiveCore sells 3 in-app purchases, starting at $4.99 per month. AWU2UDDF asks for nothing beyond the download.

AWU2UDDF ships an update every 14 months, DiveCore every 4 days. The most recent releases landed on September 20, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | AWU2UDDF | DiveCore |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/awu2uddf/id1661616210/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 4 days** |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 23 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone | **iPhone, Apple Watch** |
| Age rating | 4+ | 12+ |
| Developer | [Douglas Junkins](https://appshunter.io/developer/1661616212) | [juseong kim](https://appshunter.io/developer/1875156558) |

## What reviewers say

### AWU2UDDF

[App page](https://appshunter.io/ios/app/awu2uddf/id1661616210)

Export underwater depth and temperature data from your Apple Watch to a standard UDDF XML file. This file can then be imported into popular diving log software for comprehensive record-keeping. It seamlessly integrates with the Health App and HealthKit.

**Highlights:** Export underwater depth and temperature data, Standard Universal Dive Data Format (UDDF) XML output, Import into Macdive or Subsurface, Integrates with Health App and HealthKit

**In-app purchases:** none


### DiveCore

[App page](https://appshunter.io/ios/app/divecore-dive-computer/id6758817797)

This app transforms your Apple Watch Ultra into a professional dive computer. It uses on-device AI to analyze your dives, providing insights into safety, efficiency, and consistency. Features include real-time decompression modeling, estimated dive routes, and a no-fly timer.

**Highlights:** Bühlmann ZHL-16C decompression model, Real-time NDL + decompression ceiling display, Estimated dive route visualization, No-fly timer with Live Activity, On-device AI dive scoring, Dive log with iCloud sync, Underwater color correction

**Features:** Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DiveCore Pro (Monthly) | $4.99 | per month |
| DiveCore Pro (Yearly) | $29.99 | per year |
| DiveCore Pro 1-Day Pass | $2.99 | one-time |


## Frequently asked questions

### Is AWU2UDDF free?

AWU2UDDF is free to download, with no in-app purchases.

### Is DiveCore free?

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

### Do AWU2UDDF or DiveCore have ads?

Neither AWU2UDDF nor DiveCore shows ads.

### Which is updated more often, AWU2UDDF or DiveCore?

AWU2UDDF ships an update every 14 months, and DiveCore every 4 days. Most recently, AWU2UDDF was updated on September 20, 2026 and DiveCore on October 8, 2026.

---

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