A free and open source math plotter, easy to pick up
Dynamic QR code generator with one-time $15 payment, no recurring subscription
Stage
Established
Startup
Founded
2011
2025
Based in
Not given
CA
Pricing model
Open source
Freemium
Pricing
Not given
Free: unlimited static QR codes, no account required. One-Time Plan: US$15 for one editable dynamic QR code, or US$39 for five codes (about $7.80 each). All plans include SVG and PNG downloads, custom design options, and no recurring subscription.
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
Unlimited URL edits after purchase with no reprinting required
Real-time scan analytics with location, device, and time data
Custom design with gradients, logo overlay, and rounded corners
SVG vector and PNG raster export up to 4096 pixels
Support for 12 languages with localized pricing in 4 currencies
30-day trash recovery for accidentally deleted QR codes
Google Safe Browsing API verification to prevent malicious redirects
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
Editable destination URL after printing with same QR code image
Free static QR codes with no account or signup required
Sunset Pledge guarantees 5-year redirect service if OwnQR discontinues
Grandfather clause protects existing customers from future price or plan changes
ZeGrapher
OwnQR