Clio - Your Guide to History is a free iPhone app developed by Clio Foundation. Named after the ancient Greek muse of history, Clio aims to bring history to life by providing users with a virtual guide to landmarks, museums, and historic sites.

Using your present location, Clio helps you navigate to nearby historical points of interest. But what sets Clio apart is its ability to act as a virtual time machine. Users can view images and videos, as well as listen to and read about historic events that took place around them.

In addition to its current features, Clio has plans to add interactive walking/driving tours and push notifications in the near future. The app is made possible through donations and support from individuals who share a passion for history and culture.

With contributions from museum professionals, scholars, and local history experts, Clio is not just a website and app, but also a collaborative research, interpretation, and map-building project. Every day, this partnership is working towards creating a comprehensive and interactive map of American history.