Kanga

Kanga lets nearby devices on the same Wi-Fi look at the same PDF or photo together.

Pick a document and a QR code appears. Scan it with the other device's camera and the same page opens. Page turns, the area you have zoomed into, the pointer, and your handwriting all arrive on the other screen.

■ No cloud, no account
Everything you share — documents, handwriting, and interactions — stays within your local network. Nothing is sent to our servers. No sign-up is required, and it works without an internet connection.

■ Participants don't need to install anything
The host serves the participant page from its own device. Scan the QR code and open it in a browser. If Kanga is installed, you can switch to the app from that page.

■ Joining is always free
Purchases apply only to host features. Participants see no ads and no purchase prompts.

What you can do:
• Share photos and PDFs with nearby devices
• Explain on a blank freeboard
• Point with a pointer, or write with a pen (including fine pens for small details while zoomed in)
• Export a PDF with your annotations baked in

Kanga Pro (in-app purchase):
• Remove the limit on how many devices can join (2 on the free tier)
• Let participants write on the page too
• Receive "Got it" / "Not sure" / "Raise hand" from participants
• Swap the document mid-session
• Combine several photos into one document
• Export every page with annotations
You can try Pro features for free during the built-in tutorial.

Before you start:
• The host and participants must be on the same Wi-Fi network.
• Traffic during a session is not encrypted. Kanga is intended for trusted networks such as a home or classroom.
• Handwriting is discarded when the session ends. Export before ending if you want to keep it.