First of all, thanks for the wonderful product like Adobe Light room,which is making photographer's life easy !
I just came across a question while editing one of the images I clicked, may I know if we can add another image as a watermark / logo to the image which we are editing in lightroom android version. If this feature is not available, could you please implement this as it is highly needed !
At present it is only possible to add a simple text watermark on export/sharing. It may be possible to use a graphic watermark in a future release as it is something customers have requested; but I don't know when. So keep an eye on future updates or community announcements.