Caliu runs everywhere you write, and every app works with the same notes, synced through your account.
The web app
The web app lives at web.caliuapp.com and runs in any modern browser. It is a full offline-capable app: you can install it as a PWA (look for "Install" or "Add to Home Screen" in your browser) and it will keep working without a connection, with your notes stored on the device.
The iPhone and iPad app
A native app built for iOS and iPadOS, with the same warm design, widgets, a share extension for sending content into Caliu, and full offline support.
The Mac app
A native Mac app that shares its codebase with the iPhone and iPad app. Same notes, same themes, plus desktop touches like drag and drop into the note list, and the option to mirror your notes as plain Markdown files in a folder of your choice.
The Apple Watch app
A companion watchOS app for quick capture and reference on your wrist. Browse your active notes, check off tasks, append text or a voice note, and open a note on your iPhone with one tap. It syncs independently, so your recent notes are there even when your phone is not nearby, and complications on your watch face jump straight to a new note, a voice note, or your note list.
One account, every device
Sign in with the same account on each app and your notes, tags, and attachments stay in sync automatically.
The website at caliuapp.com is where you will find product news, the API documentation, and the viewer for notes people share with you.