Free
In-App Purchases

Details

Released
July 5, 2022
Updated
October 15, 2026

Features

Mares App screenshot #1 for iPhone
Mares App screenshot #2 for iPhone
Mares App screenshot #3 for iPhone
Mares App screenshot #4 for iPhone
Mares App screenshot #5 for iPhone
Mares App screenshot #6 for iPhone
Mares App screenshot #7 for iPhone
Mares App screenshot #8 for iPhone
iphone
ipad
watch
🖼️Get Icon
Icons↘︎

About

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.

✓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
Show original description

What's New in Mares App

1.3.1

October 15, 2026

Improved dive transfer from Apple Watch Ultra to your iPhone Fix a crash that could appear in rare situations during app start Fix DESAT/NO-FLY complication is not updating correctly

More
7

Subscriptions & In-App Purchases

Snorkel Only

Monthly subscription (Snorkel Only)

$2.991 Month
How to cancel Mares App subscription ⁉️

User reviews

Firmware updates

Cannot update firmware on Nares Quad Ci if that dive computer suppirted?

I was able to update firmware, it cannot be updated until flight limitations are active.

Je recommande

Super complet, rapide pour ajouter les données des plongées.

Sehr übersichtlich und einfach zu bedienen, Logbuch nicht gut

Als Tauchcomputer funktioniert die App ganz gut. Das Logbuch allerdings nicht wirklich. Da sind fehlende Zahlen, doppelte Einträge, unvollständige Synchronisierung usw… Die Zahl der gesamten Tauchgänge ist an verschiedenen Stellen der App unterschiedlich. Auch die Bottom Timer Funktion finde ich so gefährlich. Es ist überhaupt nicht ersichtlich, dass die Aktivierung die Berechnung der Dekompressionszeit deaktiviert und den Tauchcomputer dann für 48 Stunden sperrt. Wer braucht sowas überhaupt?
Show more

What the &^%$ happened with this new update?

I’ve been using the Mares ‘app’ for over three years now, and in the past two year using a (Mares) Sirius computer. Am diving in Cozumel this weekend, and after updating the Mares app with a new update this weekend, the app doesn’t recognize the SIrius computer in Bluetooth mode. Shows “Connecting, Device detection in progress” without end (left in this mode until the Sirius computer switched off Bluetooth mode). Does the Mares technical staff “debug” their software releases? If so, why is this happening? Had great dives at Cozumel but will simply log them manually, which pretty much defeats the purpose of using a Mares dive computer.
Show more

Sehr übersichtlich und einfach zu bedienen

Lediglich die Bottom Timer Funktion könnte eine Warnung haben, wenn man sie aktiviert. Danach sperrt sich der Tauchcomputer für zwei volle Tage.

Developer apps

FAQ

What does the Mares App do?

The Mares App transforms your Apple Watch Ultra into a dive computer, allowing you to record dives directly on your wrist. It also functions as a digital logbook for various diving types, helps manage dive sites, track wildlife, and store equipment details.

What are the key features of the Mares App?

Key features include Apple Watch Ultra dive computer integration, a digital logbook for Scuba, Freediving, Extended Range, and Rebreather dives, a dive site database with custom site options, wildlife sighting tracking, dive buddy sharing, and digital equipment management.

How much does the Mares App cost?

The Mares App itself is free to download. However, an in-app purchase is required to unlock its full functionality as a dive computer for the Apple Watch Ultra.

What devices are compatible with the Mares App?

The app is designed to work with the Apple Watch Ultra as a dive computer. It also supports downloading dive data from selected Mares dive computers, including models like Sirius, Horizon, Genius, Quad, Puck, and Smart series.

Can I use this app for freediving?

Yes, the app supports logging Freediving dives in addition to Scuba, Extended Range, and Rebreather dives. You can record your freedives, manage dive sites, and track your underwater experiences.