Yes, Tile works with most versions of the iPad. In fact, the only versions of iPad that Tile does NOT work with is the original iPad and the iPad 2. These two versions of the iPad do not support Bluetooth Low Energy, which is the technology Tile uses to communicate.
To download the app, you can follow the steps below:
1. Visit the App store
2. Search for "Tile" in the search box on the upper right hand corner of the screen (Note: You will not immediately see the Tile app.)
4. Select "iPhone Only" from the drop down menu in the top left hand corner
5. After the page has refreshed, download the Tile app