Zonetaks is a mobile application that uses the GPS in your phone to associate tasks with a geolocation. Since Zonetasks is aware of your location whenever you enter or exit the geo-fence (a virtual perimeter for a real-world geographic area) the device generates a notification to remind you of your due tasks. It’s instantly interactive and uses your location context to prioritize tasks that are near you. It also has many other great features like color-coding for tasks, configurable notifications, adjustable radius for a more accurate notification threshold, an augmented reality mode and many other amazing features.
ZoneTask is available for Windows Phone 7.X, Windows Phone 8, Windows 8, Windows 8.1, Windows Phone 8.1, Android (new), iOS (Soon).