App to log all (other) app usage?

[Nisouca]

Hi,

In doing some mobile usability research I'm interested in logging user's device usage and interaction across all apps/programs

Is there an app around that would provide a log of this overall device activity (at least showing when programs are opened, closed etc)?

Is it even possible to do this from a single app?

Thanks

 

[Nisouca]

Any ideas on this?