> It's not like it will be hard for Twitter to check.
Are you sure? That would require a centralized review and distribution process for all 3rd party clients, like the App Store for Twitter. It's not outside the realm of possibility, but there's very little incentive for them.
It barely needs to be more than a line in the ToS for the API. I'm sure Twitter already had a list of terms, and a way to ban people who misbehave. This is one more way to misbehave and get banned. Going right to an App Store would be insanity.
Showing ads isn’t enough. You need to count as impressions to bill advertisers and convince them to trust the impression data coming from third party clients.
They could just tell Apple & Google that your app doesn’t conform to their TOS, and poof, it’s gone. Especially PlayStore is really careful around 3rd party content.
Are you sure? That would require a centralized review and distribution process for all 3rd party clients, like the App Store for Twitter. It's not outside the realm of possibility, but there's very little incentive for them.