| Key features | - Natural function notation like f(x) = 2 + cos(x)
- Sequences from recurrence relations
- Parametric equations with custom intervals
- CSV data import and spreadsheet editing
- Animated constants and variable families
- Vector and image exports (SVG, PDF, PNG, JPEG, BMP, PPM)
- Grid customization with π multiples for ticks
- Interactive navigation with drag and zoom
- Multi-language support in 9 languages
- Built-in manual and automatic work saving
| - 10+ bubble styles including Classic, Meme, Pixel, Anime, Thought, Shout, Whisper, Chat, Sketchy, Neon, and Round
- Export in PNG, JPG, WebP, or GIF formats
- Local image processing—images never uploaded to servers
- Fully touch-friendly editor works on iPhone, Android, and tablets
- Customize text with multiple fonts, sizes, and colors
- Drag and position bubble tails to point at speakers
- Transparent background support for PNG and WebP exports
- Animated GIF support preserves motion with bubbles on every frame
- Social preset export options for Instagram, Twitter, and Discord
- Create fake iMessage and Android text message screenshots
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| What makes it different | - Draws mathematical objects exactly as written on paper with natural notation
- Handle CSV files of several million cells
- Objects can build on each other in expressions
- Exports with exact size in real centimeters
- Fully free and open source under GNU AGPL license
| - Completely free with no Pro tier, paid upgrades, or watermarks
- No signup or software installation required—edit directly in browser
- Images never leave your device—all processing happens locally
- Commercial rights included—use finished images for YouTube, client work, products, and monetised content
- Full ownership—retains rights to all uploaded photos and finished designs
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ZeGrapher
SpeechBubble Studio