Checkmark is a new productivity app that lets you create location and time based reminders on your iPhone. And to create them wickedly fast -- as in, only 3 taps! Checkmark will organize your reminders by distance so that you know which tasks are closest to you.
What makes Checkmark so fast is that you create a list of common places, like home, work, the grocery store, and your kid's school, and Checkmark displays them as icons on a 3x3 grid. Just tap the location, enter in a title and notes for the remember, select to be reminded when you arrive or depart from the location, and you're done!
You can use Checkmark to remind yourself to do laundry when you get home, pick up eggs the next time you're at the grocery store, not to miss your bus/train stop if you're easily distracted by reading (or sleeping!), call your spouse when you leave work, pick up a cake from the bakery at 2p on Wednesday, and much more!
Checkmark has an introductory price of $0.99.