No longer supported by the developer; save your money

Realmac no longer supports this software; they removed it from their website (try and follow one of the links provided at the top of the page and you’ll see). Just like Ember (another product from this company), this software should no longer be offered on the App Store, or at least it should be free. It used to be a fine to-do manager in a pinch, for those who just need a list to “cross things off” (although it really never was THAT user friendly; mostly it provided a “new paradigm”). It has been plagued with sync problems for quite some time. Save your money (and Apple really should start to remove abandonware from its App store).

mikokim about Clear – Tasks, Reminders & To-Do Lists, v1.1.7