# Scuba Dive Signals vs Mares App

The clearest difference is review sentiment: Scuba Dive Signals at 100% against Mares App's 48%. Scuba Dive Signals also leads on in-app purchases (none vs 4) and rating (5.0 vs 4.5). Mares App's advantage is update cadence (every 4 weeks vs every 42 months) and ratings volume (192 vs 3). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Mares App sells 4 in-app purchases, starting at $2.99 per month. Scuba Dive Signals asks for nothing beyond the download.

Scuba Dive Signals holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Mares App has 192 ratings behind it against 3, so its average is the more settled of the two. Written reviews point the same way: 100% of Scuba Dive Signals's written reviews are positive against 48% of Mares App's.

Scuba Dive Signals ships an update every 42 months, Mares App every 4 weeks. The most recent releases landed on October 8, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Scuba Dive Signals | Mares App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/scuba-dive-signals/id1483856571/reviews)** | [4.5 (192 ratings)](https://appshunter.io/ios/app/mares-app/id1625641063/reviews) |
| Number of ratings | 3 | **192** |
| Positive reviews | **100.0% of reviews** | 48.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 42 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 3 MB | 203 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Eric Hamiter](https://appshunter.io/developer/1482332471) | [Head Watersports S.p.A.](https://appshunter.io/developer/1193522423) |

## What reviewers say

### Scuba Dive Signals

[App page](https://appshunter.io/ios/app/scuba-dive-signals/id1483856571)

Access a comprehensive list of underwater hand signals for safe scuba diving communication. Includes a quiz feature to test your knowledge of signals recognized by major training agencies.

**Highlights:** List of recognized dive hand signals, Signals from PADI, NAUI, SSI, Quiz feature to test knowledge, Safety communication focus, Creative Commons licensed images

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Snorkel Only | $2.99 | per month |
| MARES Fully Featured Monthly | $8.99 | per month |
| MARES Fully Featured Yearly | $69.99 | per year |
| MARES Fully Featured Yearly Family | $119.99 | per year |


## Frequently asked questions

### Is Scuba Dive Signals free?

Scuba Dive Signals is free to download, with no in-app purchases.

### Is Mares App free?

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

### Which has better reviews, Scuba Dive Signals or Mares App?

Scuba Dive Signals is rated higher. Scuba Dive Signals averages 5.0 out of 5 from 3 ratings, while Mares App averages 4.5 from 192 ratings.

### Do Scuba Dive Signals or Mares App have ads?

Neither Scuba Dive Signals nor Mares App shows ads.

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

Scuba Dive Signals ships an update every 42 months, and Mares App every 4 weeks. Most recently, Scuba Dive Signals was updated on October 8, 2026 and Mares App on November 3, 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.*