A photo a day for her subscribers, delivered to their phone. Built as an installable app, sold and run on her side. Below is the idea, not the finished design.
The core. One image a day to everyone subscribed.
Fans tip or pay to unlock extras, on top of the base price.
3 and 12 month options that lock subscribers in.
Queue a week of photos, the app posts one a day.
A blurred teaser pulls her existing followers in.
Invisible tag by default, a visible mark when she wants it.