App based on Zettelkasten method with markdown support and synchronization Zettel notes provides seamless private zettelkasten and markdown note taking experience with synchronization. It is provided free of cost, without ads and with no hidden permissions. No user data is collected. Notes are stored as separate markdown files (no vendor lock-in like other apps). App starts with tutorial files explaining zettelkasten method. After installing, add folder / repository containing your existing notes from the Repositories option in menu.