About PenCode

PenCode was born from a simple idea: programming concepts stick better when you learn from handwritten notes. We're a team of developers and educators who believe in the power of slow, deliberate learning.

All notes are handwritten, scanned, and reviewed for accuracy. We cover C, C++, Python, Java, JavaScript, SQL and more. Our notes are used by students in over 20 countries.

We don't just sell notes — we build learning tools. Every purchase supports our mission to keep handwritten education alive in the digital age.