# Mares App vs Dive Converter

The clearest difference is price: Mares App at Free against Dive Converter's $1.99. Mares App also leads on rating (4.5 vs 4.0) and ratings volume (183 vs 5). Dive Converter's advantage is in-app purchases (none vs 8) and review sentiment (67% vs 47%). On ads and device support there is nothing between them.

Mares App is free to download; Dive Converter costs $1.99 up front. Mares App sells 8 in-app purchases, starting at $2.99 per month. Dive Converter asks for nothing beyond the download.

Mares App holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Mares App has 183 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 47% of Mares App's written reviews are positive against 67% of Dive Converter's, so the app with the better star average is not the one people write more warmly about.

Mares App ships an update every 3 weeks, Dive Converter every 2 months. The most recent releases landed on September 26, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Mares App | Dive Converter |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.5 (183 ratings)](https://appshunter.io/ios/app/mares-app/id1625641063/reviews)** | [4.0 (5 ratings)](https://appshunter.io/ios/app/dive-converter/id6446218356/reviews) |
| Number of ratings | **183** | 5 |
| Positive reviews | 47.5% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 247 MB | 9 MB |
| Requires iOS | **16.6** | 18.6 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Head Watersports S.p.A.](https://appshunter.io/developer/1193522423) | [Carsten Heinelt](https://appshunter.io/developer/1676741637) |

## What reviewers say

### Mares App

[App page](https://appshunter.io/ios/app/mares-app/id1625641063)

Transform your Apple Watch Ultra into a dive computer, recording dives directly on your wrist. Log scuba, freediving, and technical dives, manage dive sites, and track underwater wildlife sightings. Share your adventures with dive buddies and keep your equipment details organized.

**Highlights:** Apple Watch Ultra dive computer integration, Digital dive logbook, Dive site database and management, Underwater wildlife tracking, Dive buddy sharing, Dive equipment management, Firmware updates

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snorkel Only | $2.99 | per month |
| Full Featured Month (Housing Only) | $6.99 | per month |
| Full Featured Month (Ultra Only) | $6.99 | per month |
| MARES Fully Featured Monthly | $8.99 | per month |
| Full Featured Yearly (Housing Only) | $49.99 | per year |
| Full Featured Yearly (Ultra Only) | $49.99 | per year |
| MARES Fully Featured Yearly | $69.99 | per year |
| MARES Fully Featured Yearly Family | $119.99 | per year |


### Dive Converter

[App page](https://appshunter.io/ios/app/dive-converter/id6446218356)

Easily export your dive logs from Oceanic+ and SSI/mares into the Universal Dive Data Format (UDDF). This app translates dive information accurately and supports importing third-party UDDF files. It also offers features like reverse geocoding for dive locations and surface time calculation.

**Highlights:** Export Oceanic+ and SSI/mares dives to UDDF, Reverse geocoding for dive locations, Calculate surface time, Backup and restore dives, Import third-party UDDF files, Filter and merge dives

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mares App free?

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

### Is Dive Converter free?

Dive Converter costs $1.99, with no in-app purchases.

### Which has better reviews, Mares App or Dive Converter?

Mares App is rated higher. Mares App averages 4.5 out of 5 from 183 ratings, while Dive Converter averages 4.0 from 5 ratings.

### Do Mares App or Dive Converter have ads?

Neither Mares App nor Dive Converter shows ads.

### Which is updated more often, Mares App or Dive Converter?

Mares App ships an update every 3 weeks, and Dive Converter every 2 months. Most recently, Mares App was updated on September 26, 2026 and Dive Converter on September 10, 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.*