This is what I did with Tweet Photo [1] — It automatically tweets your instagram photos.
It started out as a Medium post[2] describing how to set this up with Zapier. Seeing how much traffic it got even years after publishing it, I decided it was worth turning into a standalone service.
While the post helped me validate there was demand for such a service. I didn’t validate people were willing to pay for it. So user growth has been good [3], revenue not so much. (less than $1k MRR)
Something to keep in mind when you go this route. Be sure to validate people are willing to pay for a solution. Building something aimed at businesses is probably a good idea.
[2] https://medium.com/@marckohlbrugge/a-better-way-to-post-your...