Parse authenticates with GCM using the API key that <i>you</i> provide, as do all other services AFAIK. So, all developers need to do is use that same key in their new push provider, and their push tokens will work.<p>The tricky part is actually making sure that all of your push tokens that are in the Parse database are migrated to the push provider that you&#x27;ve chosen.<p>EDIT: I stand corrected, looks like you have the option to use their key as you said, my apologies! Should have figured the founder of OneSignal would know ;-)