About 207 Studio

207 Studio is an independent software studio in South Korea, led by an elementary school teacher. We build practical tools for teaching, classroom presentation and assessment, and we sell the engines behind them as source-included developer kits.

Founded by Jang Yuil (장유일).

Everything we sell is a one-time purchase with full source code. There are no subscriptions. Personal tiers are for one person; Commercial tiers cover a company or organisation with annual revenue up to $1M. Above that, we offer a separately negotiated Enterprise license.

What we sell

• PPTX Player SDK – Play PowerPoint in the Browser: Play PowerPoint in the browser with every animation: a client-side PPTX to HTML/SVG engine that works offline.
• PadswayCore SDK: Mac-to-iPad Screen Streaming: Put a live Mac screen on an iPad and send touch, keyboard, clipboard and dictation back: the streaming engine from a working Mac + iPad remote app, as a Swift package.
• Scan-to-Grade: Scanned Exams to Excel (Python): QR Cropper and OMR Auto-Grader together: a scanned batch in, an Excel gradebook out.
• OMR Auto-Grader – Bubbles, O/X, Circled Answers: Reads bubbles, circled words, O/X boxes and ordering marks on scanned sheets, and fills in only the grades it is sure of.
• QR Answer-Sheet Cropper – Crop Every Answer Box: Print a QR on each sheet, scan a mixed batch, and get every answer cell back as a clean, aligned image.
• Context-Gated Voice Commands – Offline: A Rust library and CLI that infers the current situation from audio features and lets through only the voice commands that fit it.
• ShapeFit – Hold-to-Shape for Swift & Rust: Turn a hand-drawn stroke into a clean line, circle, rectangle or polygon when the user pauses, for your own drawing app.
• Send Approval Gate MCP: Plan, Approve, Send, Verify: An MCP server that makes an AI agent plan, present an exact hash-bound approval, send once and verify, and records every step.
• Exam + OMR Sheet Builder – Paper, Sheet & Key: Write an exam once and print a matching exam paper, OMR answer sheet, answer key, explanation sheet and cover page.
• Offline Classroom Tools – Seating, PACER Timer: Four single-file classroom tools: a seating chart with attendance, a morning board, a fitness test recorder and Wi-Fi QR cards.

We also publish Pairy: Connecting Devices on the App Store and the free pptx-mcp server for AI agents.

Contact

Email support@207studio.dev for support, licensing and Enterprise questions. We read every message.

Policies: Terms · Privacy · Refunds. Code: github.com/207studio.

For AI agents: llms.txt · llms-full.txt.