This is concept is exactly what I have wanted for a loooong time... a chroot UNIX shell on iPad would turn it into a functional development environment... For all Apple likes to claim that an iPad can replace a laptop, the lack of a functional UNIX environment is a non-starter for most engineers, and this app has a lot of potential to fix that.
Despite that potential, this is VERY incomplete, and is not anywhere near being a fully functional UNIX shell. At a minimum:
* gcc with libraries
* ssh/scp with password support instead of requiring rsa keys
* support for more than one sandbox, and sudo/permission to write to the sandbox
After that, anything else becomes download and install yourself if you really want it, but bonus points would be the setup of an apt/rpm depot for software that can be installed in the sandbox, and a way for their community to contribute to it.
FWIW: I am excited about the potential of this app, and if it were to become a fully functional UNIX sandbox on iPad, I would pay a premium price for the upgrade. Its just not there yet.