Maximum PC

OK, Unfortunately, where I work, we had to upgrade away from Blackberries (the average life of Blackberry for us was about 1 year, just outside of the warranty).

Anyway, needless to say, we are on iphone 5's now, and was just wondering about some suggested for apps?

First is a secure messaging system (like the blackberry messenger). Security is a must (privacy).
Second is a good, sure, password keeper app (like the one built into the Blackberry OS).

Suggestions/Ideas? Or are these already built-into the iphone 5? Security is more important than cost for the most part, so if an app is more than 99 cents or whatever, that's fine. Just needs to be secure (and encrypted, preferrably), and from a trusted source. Does Apple themselves have any type of apps?

Someone may want to move this to Roadwarrior Pitstop or Internet Truckstop...probably Road since there's seemingly android posts already there..