Spring Ahead & Fall Back was IDEA’s first app. Designed for the Apple iPhone and iPad, the app enables users to discover when and where people observe Daylight Saving Time and Summer Time, and when they should switch their clocks.

Users twirl the globe, zoom in with a pinch, and tap on a country. Or type in a country name. They’re transported to that location and learn whether or not that country observes Daylight Saving Time, and if so, what date and time it will start or end during any given year.

iPhone users can easily set calendar alerts for a given country, choosing from among the next time change only, the changes this year, or the next decade of time changes. Best of all, iPhone and iPad users can remind others to spring ahead or fall back thanks to the app’s full integration with email, Facebook, and Twitter.

In addition to must-have information about places, dates, and times, users can explore the rationale behind Daylight Saving Time, its history, and its unintended consequences.

Available in the app store