[Monotoko]

You can, I've already made a modified version of Apollo and sideloaded it onto my phone with a tweak to set my own key instead of Apollo's

However there is a line on the developers page now that says all apps need to accept terms and sign up for a developers program, so I have my doubts it will continue to work either

[mynameisvlad]

How?

Apollo’s dev never released the source code to the app, only the server which sends out push notifications.

[Monotoko]

Sideloadly and a lot of messing about, it doesn't need to be jailbroken though.

While it's still here: https://old.reddit.com/r/jailbreak/comments/145y787/tutorial...

[charrondev]

Presumsbly you could disassemble the app, replace the relevant keys, then sign it with your own developer app.

[antonjs]

Probably possible to edit the API key resource without actually needing to see the source code.

[PartiallyTyped]

Probably jailbroken phone, but honestly I am equally clueless.

[hartator]

> How?

And why? Before a few days ago, it wasn’t an issue at all.