ZBerry OS
The soul of ZBerry Uno — crafted in C++, optimized for stealth and speed.
Built for the ZBerry hardware. Engineered for you.
ZBerry OS is a lightweight, real-time operating system written entirely in modern C++. It's compiled specifically for the Xtensa dual-core processor inside every ZBerry Uno, squeezing every ounce of performance from the hardware while maintaining the iconic calculator disguise.
100% C++ Core
From the kernel to the UI toolkit, everything is written in C++17. No bloat, just raw efficiency. Boots in under 2 seconds.
Hardware-Optimized
Custom drivers for the 3.5" LCD, power management, and input handling. ZBerry OS knows every register and pin.
ZServices Integration
Seamless access to ZGPT, ZStore, encrypted messenger, and cloud sync. All services work offline-first, with secure background sync.
Ultimate Customization
Change themes, rearrange the home screen, remap buttons, and even write your own widgets in ZScript — no limits.
Experience ZBerry OS – Emulator Previews
The ZBerry OS emulator (included with the SDK) lets you test and customize everything before pushing to hardware.
Home screen – clean, customizable grid
Deep customization – themes, layouts, button mapping
Secure login – password or pattern disguised as calculator input
*Screenshots from the official ZBerry OS emulator. Actual device appearance may vary slightly.
Under the hood: C++ and ZServices
ZBerry OS is not a Linux fork or a trimmed Android — it's a purpose-built operating system. The kernel schedules tasks in real-time, the graphics subsystem draws directly to the framebuffer, and every ZService runs as a lightweight, sandboxed process.
ZServices are the building blocks of your experience — ZGPT, messenger, media player, ZStore client. They talk to each other via a secure IPC system, and everything respects the disguise mode.
Everything you need to get started
ZBerry OS comes preloaded on every ZBerry Uno. The intuitive launcher, ZStore, ZGPT, and full documentation are ready to use out of the box. For developers, the SDK includes the emulator you see above, plus compilers and debugging tools.