Emucr-ppsspp-v1.14.4-575-g86a19cebf-android.apk

: Indicates this is the 575th "commit" (update) made to the code since the v1.14.4 release.

The text is the filename for a specific development build of the PPSSPP emulator for Android . EmuCR-ppsspp-v1.14.4-575-g86a19cebf-android.apk

: The standard file format used to install apps on Android. : Indicates this is the 575th "commit" (update)

: A unique "Git hash" identifier that points to the exact line of code changes used to create this specific version. android : The operating system the file is built for. this is a of PPSSPP

In short, this is a of PPSSPP, which includes the latest experimental features and bug fixes that haven't been released in the official Google Play Store version yet.