Mares Genius Review

I used the Mares Genius for about a year across warm and cold water wetsuit dives. I wanted a full-featured computer with air integration and a large screen, and the Genius looked like it fit those needs. In practice, poor software design, lack of customization, and a neglected ecosystem held it back. Despite solid hardware, it is not a computer I recommend today.

By Tyler Allison · Updated July 2025

Use: 40 dives over about a year
Diving: Warm- and cold-water wetsuit dives
Still in my kit: No

The Short Version

The Genius delivered an excellent screen and reliable air integration, with no dive-critical failures in my use. What let it down was ownership beyond those fundamentals: restrictive menus, clunky desktop software, updates I expected but did not receive, and a fragile proprietary charging connection that I worried about when traveling. Solid underwater hardware did not make the whole experience work for me.

Would I buy it again? No. Not with better options available.

What Works

Large, bright screen that stayed readable across conditions
Stable air integration across 40 dives without underwater signal drops
Rechargeable battery
Solid unit and reliable core operation once configured

What Doesn't

Clunky desktop software and frustrating menus
Fixed layout with no useful customization for my needs
Fragile proprietary charging cable and port
Expected software improvements did not arrive during my ownership

Why I Chose the Mares Genius

I was looking for a full-size dive computer with a large screen, strong air integration, and a rechargeable battery. The Genius seemed like a good fit for those requirements, and I got a good deal through a local shop. It looked like a serious piece of gear and promised a lot of features, but the day-to-day experience fell short once I started diving with it regularly.

What It Is Like to Dive

Screen Visibility: The screen was excellent across the lighting and water conditions I used it in. I had no complaints about brightness or glare.
Air Integration: The transmitter connection was stable across 40 dives and never dropped once underwater. Air integration was one of the strongest parts of the experience.
Menus and Layout: Once configured, it worked fine during dives, but getting through the menus was frustrating. The lack of control over the screen layout felt restrictive, and the interface remained clunky over time.
Conditions Tested: I used it for warm- and cold-water wetsuit diving. I did not test it in drysuit or technical-diving scenarios, so those are not part of my firsthand experience with it.

Charging and Travel

The unit itself felt solid, but the proprietary charging cable and port were a weak point in ownership. I had to handle the cable carefully to avoid failure, and it was a constant concern when traveling. A rechargeable battery was something I wanted; worrying about the connector was not.

Software and Long-Term Value

I used the Genius for about a year. During that time, the desktop software and interface felt unfinished, and the updates I had expected never arrived. The lack of improvements mattered because the hardware’s strengths did not address the software friction I dealt with regularly.

Even with the deal I received through my local shop, the features did not justify the ownership compromises for me. This was not a case of air integration failing or the screen being unreadable. It was a computer that did those things well but did not give me the software experience and flexibility I wanted as my diving progressed.

Who It Makes Sense For

Its strengths may appeal to single-tank recreational divers who prioritize a bright screen and reliable air integration and are comfortable with a fixed layout. Those were genuine positives in my use, but they do not change my own decision not to buy it again.

When I Would Buy Something Else

I would look elsewhere if screen-layout flexibility, an actively maintained software experience, or a less fragile charging arrangement were priorities. I did not test it for technical diving, and it is not the computer I would choose for that progression based on my ownership experience.