Being able to account for personnel in an emergency is a priority for all organization around the world. Many missions use some variation of a phone tree for this purpose. Phone trees, as commonly implemented, have several well-known shortcomings, including the difficulty of ensuring that all personnel will actually have immediate access to the most up-to-date version of the missions phone tree when an emergency strikes.
E.C.Tree app allow missions to share contacts information in no time, users with a valid authorization code provided by organization admin will have a copy of the latest contact list. Sharing and maintaining contact list is one of the major features of this app.
All users with an iPhone and authorization code will have immediate access to the phone tree contact, at all time. No more concern about ensuring that employees carry a paper copy of the phone tree list in their wallets or purses. No more concern about ensuring proper dispose of outdated phone lists each time a new version is issued.