Did it ever happen to you? You're already on your way to the airport, but suddenly it hits you: you're not sure if you've packed everything you needed — or if you forgot to water the flowers.

It is quite helpful to think about recurring issues as lists of items. Unlike to-dos in personal productivity software, you can reuse lists as much as you like. It's natural to check every item off to be sure you did not forget or miss anything.

Lists are most useful during unexpected situations — when you need to act fast and without any hesitation. Lost your passport while you're abroad? Global crisis? Apocalypse? Just store your in-case-of-emergency lists in DoubleCheck and stay confident.

DoubleCheck was created specifically to work with simple lists. It is designed specifically for one-hand operation — to let you check all the items in a list while you're still busy handling something.