Butterfly is a cutting-edge note-taking app that places your ideas at the forefront. With Butterfly, you can effortlessly add text and draw pictures, and export your notes with ease across all your devices. The app is available for Android, Windows, Linux, and the web, allowing you to access it from any device you have, be it phone, tablet, laptop, or desktop.

Butterfly makes note-taking a breeze. Simply open the app, and start drawing. With just a click, you can switch between tools, and customize everything to your liking. Whether it's your preferred color or your own palette, the infinite paper size is perfect for all your notes and ideas.

With Butterfly, you have total control over your data. Choose to store it locally or in your favorite cloud service (WebDAV), and export and import files whenever you need to. This app truly empowers you to take your note-taking to the next level.


  • ⚡ Simple and intuitive Every tool is in the right place. Open the app and start drawing. Change your tools by clicking on it.
  • 🎨 Customizable: Change everything to your needs. Choose your custom color, create a palette, and add your pages to the paper. The paper has an infinite size, perfect for your ideas and notes.
  • 📝 Support your favorite formats: Import and export are supported for images, pdf and svg. Register the app to open these files to edit them.
  • 📱 Works on every device: The app is available for android, windows, linux, and in the web. You can use it on your phone, tablet, or computer.
  • 💻 Choose where your data is stored: You can choose to store your data locally or in your favorite cloud (webdav). You can also export your data to a file and import it again.
  • 🌐 Available in many languages: The app is available in many languages. Help us to translate this app to your language.
  • 📚 FOSS: The app is open source and free. You can contribute to the project and help to make it better.
  • 🔋 Use it offline: You can use the app offline. You can draw, paint, and export your notes without an internet connection.
  • 🖊️ Use your favorite stylus: The app supports stylus and touch devices. You can draw and paint with your favorite stylus.
  • 📜 Write text: You can write text on your notes. You can change the font, size, and color.
  • 📸 Take photos: You can take photos and add them to your notes. You can also import photos from your gallery.
  • ⚙️ Editable: You can change the size, color, and position of every element after you added it to your note.
  • 🟦 Add shapes: You can add shapes to your notes. You can choose between a rectangle, circle and line.
  • 🔳 Structure your notes: Add areas and waypoints to your notes to keep them organized.


  1. Windows
  2. Linux
  3. macOS
  4. Web (PWA)
  5. Web (Self-hosted)


  • AGPL-3.0 License