Does an app make sense for housing multiple web properties?

I have been working with a therapist who is quite the entrepreneur and owns several web properties right now (think Dr. Phil). They are different websites for different audiences, but there is certainly some overlap in the user base.

She has complained recently about being spread too thin and it made me think of my recent corporate experience where the large company I worked for used the corporate app as a portal for all their various web properties.

Realizing that a person can be branded just like a corporation, does an app make sense as a portal for all of her digital assets?