A desktop learning home
Callopus brings your courses, library, notes, and study into one calm workspace.
Coming soon for Linux, Windows and macOS
Free to use, with your own AI key or a free daily allowance once accounts open
Everything you need to learn, in one place
A unified desktop environment designed for deep focus without browser tabs or distractions.
Courses & Video
Connect your course platforms and study with a clean video player, transcripts, and progress tracking built in.
Library & Reader
A calm reading space for PDFs, textbooks, and documents with dark mode, highlights, and margin notes.
Notebooks & Flashcards
Markdown notes with KaTeX math and code blocks, paired with spaced repetition flashcards to retain what you study.
Focus & Tasks
Stay on track with a built-in focus timer, daily task lists, and calendar integration tailored for study habits.
Live voice tutoring
Talk through complex problems out loud. Ask questions in real time, interrupt naturally, and practice languages with an AI tutor that listens and speaks back.
Our AI, or your own key
Zero lock-in. Connect OpenAI, Anthropic, Google Gemini, OpenRouter, or local models via Ollama with your own API keys for free unlimited access. Or subscribe to Callopus AI for seamless built-in models with no configuration required.
Simple, transparent plans
The desktop app is free. Upgrade for built-in Callopus AI credit and models.
Free
₹0Free desktop home. Unlimited use with your own API keys, plus a free daily allowance of Callopus AI once accounts open.
Pro
₹99/moIdeal for daily study questions, search, and document summaries with fast frontier models.
Pro Plus
₹199/moGenerous monthly credit, stronger reasoning models, and realtime voice tutoring minutes.
Max
₹399/moHeavy daily AI study, deep reasoning models, and extended live voice conversation allowance.
Frequently asked questions
What is Callopus?
Callopus is a calm desktop learning home for Linux, Windows, and macOS that unifies your courses, notes, flashcards, and AI study tools into a single native workspace.
Which platforms are supported?
Callopus runs natively on Linux (AppImage and .deb), Windows (x64 installer), and macOS (universal binary for Apple Silicon and Intel).
Can I use my own AI keys?
Yes. You can connect your own keys from OpenAI, Anthropic, Google Gemini, OpenRouter, or run local models through Ollama completely free with no usage limits.
How do I pay?
UPI Autopay, cards or net banking, through Razorpay.
Is my data private?
All your study materials, courses, library documents, and notes stay stored locally on your device. Calls made with your own API keys connect directly to those providers without passing through our servers.