Digify

Digify is a file transfer tool to send any type of document to another user privately and securely, as the files will auto-destruct after a certain amount of time.

When sending files with Digify, users have to set a time, ranging from one minute to one month, after which the file will self-destruct without leaving a trace on the receiving Android. In fact, users can't even take screenshots of the received files, as Digify has blocked that option.

One of the best things about Digify is that it syncs with your Dropbox account, so you can upload and share any file with the confidence that it will self-destruct after a given amount of time.

Digify is a very useful file transfer tool. It's important to keep in mind, however, that both the person sending the files as well as the one receiving them must have the app installed on their devices.