Back in March of 2013, PPSSPP was ported to the iOS. PPSSPP is a PSP emulator written in C++, and translates PSP CPU instructions directly into optimized x86, x64 and ARM machine code, using JIT recompilers (dynarecs). PPSSPP can thus run on quite low-spec hardware, including stronger ARM-based phones and tablets, as long as there’s support for OpenGL ES 2.0.
If you’re wondering how to install PPSSPP on your iOS 7 device, jump over the break and check out a video tutorial that will walk you through the process.
https://www.youtube.com/watch?v=4z5jUECg46M