PPSSPP

PPSSPP is a free and open-source PSP emulator Android with an increased focus on speed and portability.

PPSSPP can run all your PSP games on your Android Smartphones. It can even upscale textures that would otherwise be too blurry as they were made for the small screen of the original PSP. Even on modern Android phones and tablets, you can often run at double the original resolution.

it's all about speed. The Vulkan backend has improved as is now the default where available, while the OpenGL backend has been properly multithreaded and now runs really fast on dual-core devices. Enjoy! The Android release will be rolled out slowly over the next week to catch bugs. If you want it now now NOW then download the APK! May 28: 1.6.1 fixes a few crashes. May 30: 1.6.2 fixes some more. June 5: 1.6.3 fixes even more.
OpenGL backend now properly multithreaded, giving a good speed boost.
Various Vulkan performance improvements (like #10911) and memory allocation fixes.
GPU command interpreter performance improvements (#10658) Various fixes for app switching and widgets (#10855) on Android.

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