While you are specifically looking for a "Mod APK 2.3.3," it is important to exercise caution:

"Mod APKs" from third-party sites can contain malware or trackers. Users on forums like Reddit have noted that unauthorized APKs may trigger security flags or fail to work on newer Android versions.

The Pro version (often labeled as "Pro" or "A Pro") includes several enhancements over the free "Basic" version:

Includes a beautiful GUI with support for customizable skins to change the handheld's appearance.

Supports RetroAchievements, cheats, rewind functionality, and hardware peripherals like gyroscopes, light sensors, and rumble packs.

Like all legitimate emulators, Pizza Boy does not include ROM files; users must provide their own legally owned game files to play. Pizza Boy A Pro - Apps on Google Play

is a high-performance Game Boy Advance (GBA) emulator for Android, developed by Pizza Emulators . It is widely recognized for its precision, achieving 60 FPS even on older hardware due to its core being written entirely in C and Assembly. Key Features (Pro Version)

Allows total customization of button size and position. Security & Versioning Note