Neat at first, useless as a real tool

Pro:
Pretty and simple to use on iOS
Same style on OS X
iCloud sync seems to work well now (rocky at first)

Con:
Not really efficient to use on OS X
Non-intuitive interaction on OS X (touch gestures don’t translate well to OS X)
Suffers from obfuscating too many features to keep minimalist look
Updates come once in awhile with shallow features.
You can’t customize individual list themes.

Summary:
Flashy list app for those who want colourful lists.

spaceleviathan about Clear – Tasks, Reminders & To-Do Lists, v1.1.5