When large earthquakes occur, affected
inhabitants lose access to phones and the Internet. To
provide immediate assistance to disaster victims, we
developed a disaster prevention application that is available
off-line, and that has the following characteristics. 1) When
communication infrastructures are damaged, the functions
of the developed application work off-line. 2) During largescale
disasters, such as the Tokai earthquake and the
resulting tsunami, users can examine the inundation range
prediction of tsunamis and can read a suitable disaster
prevention manual. 3) The developed application is
compatible with common, portable devices.
We developed an iPhone application and then conducted
experiments to evaluate its usefulness. Next, based on the
user feedback, we made improvements and then developed
an Android application and subsequently evaluated it.
Keywords-component; Smartphone; Disaster Prevention
Application; the Great East Japan Earthquake