The disadvantage is that the fine-tuning is too complicated, not suitable for novices, and the operation is not as smooth as PPSSPP. It is one of the earliest PSP emulators, and its simulation quality is still very good today, providing a lot of fine-tuning options.
JPCSP is a Java-based open-source PSP emulator, developed by the famous PCSX2 emulator team. This great app is totally free, but you donate some money to support the developer by purchasing the gold version. You can even play custom controllers, such as tilting sensitiveness, as you like. With PPSSPP, you can enjoy HD on your mobile device (or even your computer) on all your favorite PSP titles.
And it can work on CPU platforms including X86 and ARM. It supports mainstream computer and mobile device operating systems like Windows, Linux, Mac OX, Android, iOS. It can be said the best PSP emulator for PC. PPSSPP (PlayStation Portable Simulator Suitable for Playing Portably) is a cross-platform open-source PSP emulator developed by hrydgard, one of the main members of the well-known NGC/Wii simulator Dolphin development team.