Tech diver issues with Nautic

[David Shiff]

@garyt687 about 30 dives with the unit and you are absolutely right in every point. + add small compass.
Returned to my shearwater teric until the next firmware update, just miss the lovely screen… ‍️

[estragio]

@garyt687 This post honestly deserves way more attention. If Suunto really wants to break properly into the tech diving / enthusiast market, this is exactly the kind of feedback they should listen to.

What’s frustrating is that the hardware actually seems really solid. Big screen, long battery, GPS, nice design… it genuinely feels like the foundation for a top dive computer is already there. Most of the problems you mention sound software/firmware related, which means they could realistically be fixed.

And the thing is, when people ask for dive computer recommendations on Reddit, Scubaboard, forums etc., it’s usually experienced rec divers and tech divers answering. Those communities massively influence what people buy. If those users don’t trust features like GF99, compass behavior, or GPS tracking, word spreads fast.

The app point is also super important. A lot of divers want a proper digital logbook with deco info, profiles, gas switches, equipment tracking, dive numbering, all that stuff. Right now it sounds like the app is way too basic for the audience Suunto is targeting.

But honestly, with the hardware they already have, this could become a seriously good platform if they iterate fast and actually listen to users like you.

Btw regarding the entry/exit GPS points: why are they so wrong exactly? In theory those should be GPS-corrected at the surface before descent and after ascent no?

[hhouter]

@garyt687 The Compass Bearing is active for 5 Minutes above water. Then Suunto resets the bearing. I have noted this also as something that can eaily confuse people setting the Bearing at the parking and during walk to the water entrance will loose the bearing fix. Suunto should fix that.But I overcome this by setting my bearing just before going under water. Within 5 minutes and under water it remains active and set.

[Dimitrios Kanellopoulos]

Hi all,

we are reading the feedback here. Here is one reply from the Dive team that is directed to this thread but maybe also covers others

Thanks for the detailed feedback from a technical diving perspective. The feedback is very valuable when looking into improvements of current features.

Regarding the current gas visibility: totally fair point. We understand that for technical diving, current gas is significantly more critical than some of the default information currently repeated across views. We’re developing more customizable dive view options to better support both recreational and technical diving needs, and feedback like this helps us prioritize planned updates.

On the compass bearing reset: we understand the frustration. In some cases the bearing can unintentionally unlock due to accidental button press or screen changes during descent. Locking the buttons before descent can help prevent this behavior. Totally agree on the expectation that the bearing should stay persistent unless the diver intentionally clears it, and we’re looking into improving that behavior.

For GF99 differences: GF99 is calculated and displayed differently across manufacturers, so exact parity between brands should not be expected. That said, we absolutely understand that large deviations raise concerns, especially in technical diving where divers closely monitor these values during ascent. We are actively reviewing feedback and logged dive data and will release an update to this in next software update.

Regarding GPS entry/exit points and the route line: part of what you’re seeing currently is related to how the app visualizes surface GPS points in other sports. This is already being improved. GPS accuracy is also heavily dependent on when the computer receives its latest surface fix. For the most accurate entry point, it’s important to start the dive from the dive screen and wait for GPS lock before descent. Exit accuracy can also improve by shortening the end-dive delay, since the final GPS point is recorded before the summary screen appears.

For underwater route tracking and the 3D map: the route estimation is not random, but it is important to understand its limitations. The system is based on accelerometer, gyroscope, magnetometer, and pressure sensor data, assisted by machine learning models to estimate underwater movement. GNSS is naturally only available at the surface. Overhead environments, magnetic disturbances, scooter use, uneven finning pace, or complex movement patterns can all reduce accuracy. This is still an evolving technology area across the entire industry, and we continue improving the models and filtering.

On the app itself: fair criticism, especially from a tech diving perspective. Dive-related app functionality is continuously being expanded, and we know there’s still a gap in the amount of post-dive technical data available compared to what some technical divers expect. At the same time, the Suunto app is designed as a broader ecosystem because many divers also use the same device for outdoor sports, training, and daily activity tracking. The goal is to support both worlds without losing focus on diving, which remains one of the core pillars of the platform.

And no — this was definitely not built without diver input Many of us working on these products are divers ourselves, including technical divers. But real-world feedback from active users is exactly what helps refine and improve the experience further after launch.

[Ldive]

@garyt687 Same feelings and remarks…
In my club, we are several rebreather divers who have invested in this computer to take advantage of the CCR mode since it was announced shortly…
If Suunto wants to break into the market with this computer (which is a good machine), they will have to move much faster on our topics…
We kind of get the impression that it’s a secondary topic for them.

[Dimitrios Kanellopoulos]

@Ldive Suunto has a dedicated department for this. So its not secondary.

[Nandodiver]

Hi agree

the app need a profound re-design regarding diving.

Basic :
log dives number
log dives separate dives by devices, when dive with Nautic & Nautical S the dive get duplicate
Tanks stats
gas used
PPo2
bottom time
surface interval
deepest dive
longest dive
ascend time
ascend rate
Total dives
Total EAN dives
Total Deep dives
Dive plans
Total time
Max time
Average time
Max depth
Average Max depth
Min SAC
Max SAC

In my opinion should be a specific dive section inside the app only to log dives, and able to hide all the other activities metrics.

[Alon Dotan]

@garyt687
Totally agree!
You mentioned all the reasons this is my backup computer and not main…
This computer have the real potential to be shearwater killer…

I expected the firmware release will be way more often, the feedback from the community will be way more welcome…

[garyt687]

@Dimitrios-Kanellopoulos great feedback and reassuring, thanks for your feedback. I have to disagree slightly on the route maps and 3d maps though, I understand your feedback about how they are supposed to work, but for example if I do a simple dive along a reef A to B along a route we dive 10- times a month for the last 9 years - why would it appear on the app each time completely randomly, in completely different shapes, like intersecting triangles, circles, each time it is so vastly different and wrong that it looks like it has no idea at all. I honestly have not seen one single map yet that is remotely close to accurate and this is with all things being followed, starting on dive screen, locked gps, ensuring dive end is set to 1.5 mins just after o get back on the boat etc, and then the gps points are simply very wrong compared to where we are on a map. I’m not sure if this is because we are in the Philippines and some setting is wrong. I have tried to make sure all settings are correct based on research, but having no luck at all with this feature.

That said - two more - the compass - u mention above about setting it in a car park or something ‍️. Of course we set the compass once in the water, at the surface just before we descend, and it randomly cancels the bearing, sometimes does it, a few times it hasn’t, for no apparent reason. And yes the keys are locked always after compass set. This is simply feedback which I hope can be fixed - it 100% has some weird bugs with this.

I think u addressed most of the other points, so thank you! I have one more:

The tissues don’t reset in the normal fashion of any other dive computer after we finish diving and turn off the computer. For example I dive, take 2 days off, come back, and turn on Suunto and the tissue compartments are all the same as just after end of last dive, as are CNS and OTU. This is an absolutely crazy thing that it is not counting down ‘off gassing’ when the computer is switched off, thsts like having a watch doesn’t keep time if u don’t wear it. This must be fixed. I’ve never seen any other dive computer do this. Happy to send screenshots comparing computers if needed. My Garmin shows at this point no nitrogen load, no CNS or OTU load as it’s done its job (also switched off), and my Suunto reading 50%+ nitrogen load after two days off, and same with OTU/cns. Please fix this also. P.s. I know u can reset tissues manually deep in the menus but this is not how dive computers work for normal operation, you shouldn’t have to reset them manually each time you use. Thsts a great feature when renting them out to different divers to reset - it’s a dangerous information feature when it’s not doing it by itself in all other cases.

All that said - thanks again for replying. If these several features are sorted and the app becomes more diver friendly I think it will start to take over the market. Thanks.

[ccrhenrik]

How to display and calculate EADD, gas density. This is also needed in the Nautic series

https://www.divesoft.com/en/blog/the-5-2-g/l-rule-why-gas-density-may-be-the-most-important-number-in-deep-diving