Planning a Twitter based micro-SaaS

My music apps are doing ok making a small amount of money each month. I'm making sales, but each individual sale is only a few dollars and I can't help thinking "what if each of these sales was a monthly subscription for $49 instead?"

A good micro-SaaS idea should fit these criteria:

• Has business payers.
• Has existing demand.
• I have experience in the domain.
• Low on-going maintainance.
• I can reach the customers.

A Twitter based micro-SaaS seems to fit this mould and checks all o the boxes. I have personally had the need to download Twitter data for analysis myself. Time to start researching.