Good idea poor execution

This app is beautifully designed and simple to use but it just doesnt work properly. None of the reminders work until you open or close the app then all of them dump out at once; including reminders for tasks you have marked completed. In addition to this, tasks suddenly become impossible to mark complete so each time you launch the app there are even more notifications, so many it has frozen my phone twice and I finally had to delete the app completely. It would be amazing if the reminder feature functioned properly. Perhaps after some big fixes I will give it another shot.

Desidoo3 about Zippy - Tasks and Reminders