native IOS app using Cloudkit

Robert Helling helling at
Fri Sep 16 03:07:13 PDT 2016


> On 16.09.2016, at 11:48, Roger Lee <rcmlee99 at> wrote:
> Is there any development on mobile native IOS app using CloudKit?
> I'm a mobile IOS developer and would like to contribute to the project.

we can always use more developers and in particular for mobile and iOS. So you are more than welcome!

Let me add, however, that (also due to existing manpower), Subsurface only exists in its current form because it is cross platform and most of the code runs on all our targets (Windows, where most of our users but the least developers are, Linux, Mac, Android, iOS). This also mandates we use Qt because we could not support at least five different native frameworks.

Similar arguments apply also to cloud solutions we support: On the desktop, we support local files and our own cloud service (which is simply git). If you have your local files in some magic folder (using Dropbox, OwnCloud, iDrive, OneDrive etc etc), that’s fine, because to the application that looks like a local file.

On mobile devices, on the other hand, there is no local file system as such and we would have to talk to all the different cloud providers’ apis separately. And not only program against those (there might be a developer that implements talking to her favorite could api) but also maintain it, in the sense of support users that have problems setting it up. And that is currently far beyond what we can do. That is why we currently only support our own solution (over which we have at least some control and debugging access, at least some have).

Plus, in the case of Apple, IIRC you can only implement iCloud on the desktop if you go through the Appstore which we don’t (not only for license reasons).

So, in short, I would say: Yes, please please help us! In particular on iOS! But maybe not with iCloud (at least for now).

Just my $.02


Robert C. Helling     Elite Master Course Theoretical and Mathematical Physics
                      Scientific Coordinator
                      Ludwig Maximilians Universitaet Muenchen, Dept. Physik
                      Phone: +49 89 2180-4523  Theresienstr. 39, rm. B339

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