Installing older apps that i haven't purchased before
I have ipod touch 4generation. iOS 6.0.1 and as you know ipod touch 4g cannot be updated to iOS 7; Yet, I want to install an application that requires iOS7 I've read that it's possible to install older version of the apps if I have purchased them before but the apps I want I haven't purchased them before so is there any other way to get the apps?
iPod touch, iOS 6.0.1