A little Buggy
Nice idea, but Im frustrated already because if you activate Dues "Open At Login" option under Preferences it rightly opens at login, but un-checking the option didnt "take". Due is always there whenever I reboot (Apps should have a trial period - why do we have to pay before finding out if we like them?). Due fails to appear in System Preferences>User&Groups>Login Items, so you have no Admin control over it either. I bought it for a MacBook Pro w/ Mountain Lion (fully updated)
LDDS@G about
Due — Reminders & Timers, v1.2