@InnocentOwl said:
Commercial-Key necessary for my App?
Hello team,
I am currently developing an application, which will assist the user in choosing a movie over multiple streaming platforms.
Therefore I am looking for an API that can consistently deliver available movies.
I found TMDB as a valuable source. I am planning to activate ads as form of income.
My question here is: Do I need a commercial key for that or would it be enough if I mention TMDB as my source for the movies and all?
Thank you and kind regards
InnocentOwl

When I created my API Key I chose between these options:

Developer

• You are an individual
• Your project is still in development
• Your project is non profit
• Your project is ad supported

Professional

• You represent a company
• Your project is for profit (not ad supported)
• You are an OEM or hardware vendor

I believe your case fits Your project is ad supported.
So just follow the rules for informing the data source.
https://www.themoviedb.org/about/logos-attribution