aida writer is a Markdown editor that doesn't ask you to choose between writing naturally in plain text and seeing your document formatted. Type bold and it's bold. Type a heading and it looks like a heading. Whether you are creating quick notes, or writing larger documents - you can remain focused on your content, not how to markup the document so that it formats correctly. Under the hood, your document is always a standard .md file — nothing proprietary, nothing that only opens in this one app.