Unable to find synchronization support in web app

[aphedges]

The application description states:

Kmtemplate/fastlane/metadata/android/en-US/full_description.txt

Line 6 in b26a3d8

<li><b>Cross-Platform Sync:</b> Create a task on your phone, organize on your desktop, and check it off on your web browser. Your todos are always up-to-date, everywhere with Kmtemplate.</li>

However, I tried using the linked version at https://mshdabiola.github.io/Kmtemplate/, and I cannot find that functionality. I don't see it in the Android app screenshots either.

How do I access the sync functionality?