Checkmark is our favourite location-based reminders app for the iPhone. Today it’s getting a big update in the form of a brand-new version.
If you can’t remember to pay your credit card bill every month, Redittor SolidDexter has a solution: write the due date on the card itself.
Android: Android has plenty of great to-do apps, but Shifu might just be the smartest one I have seen yet. The app lets you set reminders and tasks based on people, time, location and network, giving context to your to-do list.