A:Answer The operating system on the iPad is named iOS. iOS provides basic functionality to all iPads. Roughly each year a new generation of iPads is designed and sold. iOS is upgraded from time to time to provide support for the new capabilities of these new iPads and to add capabilities to older model iPads within the limitations of the older hardware. At some point, Apple decides that a new version of iOS will not work well with an older generation of iPad hardware and/or the remaining population of the older model is too small to justify the investment required to maintain support for that generation of hardware. At that point, they cease supporting newer versions of iOS on the older models. Your daughter can check to see if her iPad is capable of running a newer version of iOS, by going to Settings, General, Software Update. If a new version is available, she should do the update. If 10.3 or later is supported, once she completes the update, she can try to install the app again. If the model of the iPad you purchased is very old, it might not be supported by iOS 10 and she would be out of luck for an app that requires that version of iOS in order to run. She can look up iOS compatibility for her model online.