How Long Are Promo Codes Good For?

I think they expire a month or so after the developer requests them

 

I thought they were good until an update came out for the game, in which it would no longer work.

 

I think it's whatever happens first.

If 30 days pass the code expires, however if the app gets updated then that code you have expires. Even if it hasn't been 30 days.

 

20 days I think, or until the next update.

 

I've used codes after update. Mind you, the last one I used like that was a while ago, maybe Apple changed it.

 

Not really. Codes last for appx 30 days after the dev generates them no matter how many updates the app had in that 30 day period. And I`m not guessing, I`ve confirmed it many a times.

But you can never know how long ago the dev generated them unless he tells you specifically. So yes, it`ll be a good idea to use it asap.

 

That's good to know, always thought otherwise.