We should remove our apps for a day or 2.

Sounds like you should organize a strike. An app store walkout.

An app shutdown day would be more appropos.

Easier to coordinate a deployment for, and affects all users, not just installing one. It would also allow you to control the messaging users see when they open your app and it only loads the walk out day screen.

Why not just display the message and then allow users to use the app.

Punishing the users of an app for the behaviour of the store, while attention grabbing and potentially impactful, seems a bit like chucking the baby out with the bathwater.

That's fair, though app disruption is more impactful - kind of like how websites went down for SOPA.

Yea those were the days. This time the technology is different. iOS 13 really does support using multiple cameras, including recording of videos.

And, I am just a solo developer working on the apps I like to use.

The key is to pick the correct battle.

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Signing up with Hoiio SMS API is a pre-requisite. I won't call that half a solution :)