Free tools
Free tools for app makers
A small toolkit we built for ourselves and opened up. All free, all in your browser, no sign-up. When you're ready to design the whole app, Bender is one click away.
Free tool
App Name Generator
Turn a keyword into dozens of brandable app name ideas.
Open toolFree toolColor Palette Generator
Generate harmonious UI palettes and copy the hex codes.
Open toolFree toolTailwind Shade Generator
Any hex → a full Tailwind 50–950 scale + config.
Open toolFree toolContrast Checker
Check text/background contrast against WCAG AA & AAA.
Open toolFree toolGradient Generator
Build linear & radial gradients, copy the CSS.
Open toolFree toolBox Shadow Generator
Craft CSS box-shadows visually and copy the code.
Open toolFree referenceMobile Screen Sizes
Viewport, resolution & DPR for popular phones.
Open toolFree toolPX to REM Converter
Convert px ↔ rem with any base font size.
Open toolFree toolAspect Ratio Calculator
Solve width/height for any aspect ratio.
Open toolFree toolFont Pairing Generator
Curated heading + body font pairings, live preview.
Open tool