The Airbitz mobile wallet is something known as an HD(Hierarchical Deterministic) wallet. This means we switch up receiving addresses for you every time you want to receive some bitcoin. Imagine having an unlimited number of email addresses that all go to you. This helps protect your privacy which we take very seriously.
And yes, you can reuse addresses an unlimited number of times but by default they will automatically change after each use.
Posted in: Airbitz Wallet (Technical)