Oh its closed source? And only for phones / tablets?
Sorry I imagined it would be the free open source tamperproof email platform upon which the mail financial stuff was going to be based.

Its all very well to claim it is secure but without inspection of the source code trying to discover whether that is true would require decompilers and such presumably...
-MarkM-
Yes, ForkStar will be fully open-source, as it is built on an open-source project. Its purpose is to provide a smoother user experience for MailCoin in the future. Eventually, ForkStar will integrate all of MailCoin’s functionalities, offering users a better payment experience.
MailCoin requires a censorship-resistant IM tool, serving as an IM group for early-stage developers to facilitate secure and decentralized communication.
Its GitHub repository is:
https://github.com/Blonskr/forkstar-androidThere will be compatible versions for various platforms in the future.