A few thoughts as someone who has developed games for iOS, Android, and the web: In today's world, if you want to retain implicit ownership of your product's name, a simultaneous triple-platform release is not optional, it is required. It must be performed in precisely the following way, or your launch will fail: - Register your game's domain before announcing it to the public. - Next, upload your iOS app to iTunes C…
You can even submit an app that is not yet finished (if it is a game, it may be missing levels, for instance), as long as it is usable in the current state and does not crash. Of course, when you update you have to go through the process again, but at least the application name is yours already.
If simultaneous launch is required, that seems to be a better approach. I am not sure if the Play store has the option of not making the app available immediately after launch, but if it has, you could flip the switches all at once.
Also, do you have to release a web version? It doesn't seem to be paying off.