Bear

For Apple users who like Markdown but want it to look good while they type. Bear formats notes with simple Markdown and organizes them with tags instead of folders, which suits people who never could decide which folder a note belonged in. Sync is the paid part: Bear Pro, at $2.99 a month or $29.99 a year, unlocks iCloud sync across your Apple devices plus export to PDF, HTML and DOCX, so the free app really suits one device. It is Apple-only, so the day a Windows laptop or Android phone enters your life is the day you start another migration.