open camera has a lot more controls but the DNG files from my 3aXL using the stock app are imo quite a bit nicer …and using gain maps really improved the image…
EDIT
If you search the forum for gainmaps…you will see a few threads. I think there is a user with a PR to add this support to DT… not sure of the status. That same user has a script called DNGpreprocess that will apply the gainmap and save a new DNG that you can use with DT.
Art supports it now…you go to the flatfield correction and hit embedded auto and it will apply the correction…
Smartphone DNG have a strong vignette and this is nicely corrected and the rest of the image is relit…
Here is one discussion