Belle uses web push to create notifications in your browser. Using a service worker, you can recieve notifications in the background. So even if you are not on the BElle website, you will still recieve timer notifications on your device.
Signup, and create a new timer for absolutely anything.
Make sure you accept notifications from the prompt in your browser.
You can now happily forget that task. Belle will remind you exactly when you need it.
Belle can be used on any device with a modern browser (E.g. Chrome, Firefox, Safari). The browser needs to be able to support two technologies - Service Workers, and Web Push Notifications. If you browser does, then we are good to go!