A developer can't just set a background fetch interval in iOS7 and have the app fetch at that interval (i.e. fetch every hour). Rather you can set your app to background fetch, and when it fetches is at the mercy of the OS.
The OS tries to be smart about it, lumping fetches together when it can, and noticing things like when the user opens the app typically.
So say the user launches GREAT WEATHER app app normally at 8 am, the OS notices and performs a background fetch a few minutes before (for example).
The OS tries to be smart about it, lumping fetches together when it can, and noticing things like when the user opens the app typically.
So say the user launches GREAT WEATHER app app normally at 8 am, the OS notices and performs a background fetch a few minutes before (for example).