Support for Kospet Tank M4

[Mark Levinsohn]

I have been diving the Kospet Tank M4 (https://eu.kospet.com/products/tank-m4) 

alongside my Garmin Decent computer, and would really appreciate it if someone can add Subsurface support for this very affordable device. 

They have native 3rd party integration to Strava (fair enough given the Tank M4 is  a full sport watch / tracker) so integration to external applications is feasible.

Somebody please take on the challenge .

[Michael Keller]

Hi Mark.

Is there any way to download a dive log from their proprietary application? If not this might be difficult, as none of their current integrations with other proprietary applications seems to support a proper 'diving' mode that supports even basic things like a depth profile.

Ngā mihi

  Michael Keller

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[Mark Levinsohn]

Michael, not that I know.

However, I have been working with their support department to fix bugs / design faults in their diving functions on the device and have found that they are (surprisingly) very responsive and have moved quickly to fix issues (some critical !!) that I discovered in testing the device.

Their app (Apexmove) currently does not have any export facility that I can see.  On opening the app, it automatically fires off the Bluetooth sync function and downloads the data to their "log".

They clearly do export all required data (even if their programmers currently don't have a  full understanding of what's required for logging a dive.  As example temperature.

They don’t distinguish between surface (pre dive) ambient air temperature and in-water temperature! 

The question is as to what's the best approach? Asking Kospet to support a "fixed defined protocol" export to Subsurface  (and how would that work?)  or have Subsurface trigger (call) a download from the device (which I doubt Kospet would support"

 

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From: subsurfac...@googlegroups.com <subsurfac...@googlegroups.com> on behalf of Michael Keller <m...@042.ch>
Sent: Thursday, January 29, 2026 10:09 PM
To: subsurfac...@googlegroups.com <subsurfac...@googlegroups.com>
Subject: Re: Support for Kospet Tank M4

 

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