You can have a try at https://www.notos.co/ https://www.notos.co/ for the privacy-minded sharing part. This is my main focus for the product. No mobile app (yet

You can have a try at https://www.notos.co/ https://www.notos.co/ for the privacy-minded sharing part. This is my main focus for the product. No mobile app (yet) or sync as backups and sharing require very different products and my focus is on the later for now.