REPLACE is an institute for research, empowerment, and learning — a home where applications, ideas, and meaningful work come to life. From a single line of code, to products used by many.
Every product begins with a simple question: what can make learning easier, more affordable, and more enjoyable?
An interactive Python compiler that runs right in your browser. Write code, stack blocks, run — no installation needed.
Open now →
An Augmented Reality & 3D experience of the Batu Tering sarcophagus — view in-browser or scan on site.
Open →Smart Pomodoro & Tasks — a productivity app with focus sessions, projects, and AI integrations.
Open now →An AI-powered English learning app — a patient, personal practice partner available anytime.
A tourism app to discover and plan trips to the best destinations across Indonesia.
Three little games to sharpen your logic, coding, and language skills. Challenge yourself, beat your record, and come back tomorrow.
What is the output of this Python code?
Free lessons and insights on Python, coding, and more — pick a topic below and dive in.
Each letter stands for something we strive for. Not just an acronym — but the way we work.
REPLACE — Research Empowerment and Learning Centre Institute — is an institute working in research, empowerment, and learning. The value of a work comes not from how sophisticated or expensive it is, but from how many people it helps.
A useful idea deserves to be shared with the world — no matter how small its form.
Try our free tools, play the games, and explore our writing. Everything at REPLACE is open to you.