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, 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 or your note list.
Turn on "Tag new notes" in the watch app's settings to automatically tag everything you capture from your wrist. The tag defaults to #watch, but you can pick any tag you like.
The Android app
A native Android app with the same notes, themes, and editor as the other apps, plus home screen widgets, sharing into Caliu from any app, and full offline support.
Inside your AI assistant
You can connect Caliu to Claude, ChatGPT, and other AI assistants, and ask them to find, write, and tidy your notes from the chat. The Caliu with AI section shows how.
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.