Is this abandonware?
There’s no reference to the product on the Realmac website, except for a redirect page to the iOS appstore. The Mac OS product Help page leads the same place. (“Having trouble with the OS X product? Just buy the iOS product — that will fix you right up!”) The support link on the Mac Appstore page for the product is a dead link.
This sort of nonsense might be acceptable if the program worked correctly, but it doesn’t: sync across devices with iCloud doesn’t work, plain and simple. It’s a nice standalone, single-device list manager, but without a working and reliable sync facility, it’s of no more use to me than a scrap of paper, which I can at least keep in the pocket of whatever trousers I happen to be wearing.
Tburgueso about
Clear – Tasks, Reminders & To-Do Lists, v1.1.7