You can look for days, and if you don't know any of the alternatives, none will pop out. As I'm not in the mobile sphere, I wouldn't know how to avoid a single

You can look for days, and if you don't know any of the alternatives, none will pop out. As I'm not in the mobile sphere, I wouldn't know how to avoid a singleton for an app that is constrained by speed and space requirements. I've already shown an example above, what's your solution in this environment, with the constraints of the questioner?