The Stickies app in Mac is bare bone when it comes to features, and doesn’t sync across your other Apple devices. Similarly, you will find few other note apps out there that will let you sync notes between two devices. NVALT is a free Mac app that lets you create as many notes as you like, lets you link one or several notes within another note, supports basic text-styling attributes like bold, italicize, underline and strike through, and much more. It also allows you to encrypt notes, and sync them across devices via a third party service SimpleNote. Notes are saved locally to your system and not to the cloud. Only when you enable syncing are the notes uploaded to SimpleNote’s cloud server.
All notes can be searched by title and text. To add a title, start typing in the search bar at the top. The app will create a note with that title, while at the same time, it will also search for notes with matching titles or text. Once the title has been entered, you can start typing in your note. To link notes, go to Edit> Copy URL to copy a link to the current note and paste it in any other note.
You may enable a menu bar icon for the app from the General tab in preferences. You can also set a hotkey to bring the app to front. To set up sync via SimpleNote (you must have an account with this service first) and enable note encryption, go to the Notes tab. From Synchronization, sign in to your SimpleNote account. Please bear in mind that you will need to install the free SimpleNote app on your iOS devices. To set up an encryption key, go to the Notes > Security tab create an encryption password.
The Editing and Fonts & Colors tab lets you enable/disable spell check, make URLs in the notes clickable, select font, text and background color, alternate the color of rows to make browsing the list of notes easier and limit the width of the note’s body.
The app is definitely feature rich, and while the interface is quite simple, the sync and encryption feature are more than enough to make up for it.