Its an already existing hobby project (www.episodecalendar.com). Im looking into adding a full-featured web version for mobile devices. This will be done in the existing app with the current data and models. I'd like to use jQuery mobile for the views, but some customization will be needed. On top of this, I'd like to add a premium account that users will need to access the mobile version. This account will require a monthly payment (recurring by the user's choice). So I will need to have a payment gateway implemented of my choice, I think ActiveMerchant.
Payment gateway integration
Unfortunately, my maximum offer is $20/hour