Ktripathi2611/skechify ? reverse-engineered prompt

Build me a clean, modern web app called Skechify where users can draw on a canvas and get smart feedback about what they made.

I want the drawing area to feel smooth and easy to use, with tools for changing brush size, picking colors, erasing, and turning a grid on or off for more precise drawing. The app should be responsive and look good on desktop and mobile, with a simple interface that feels polished and friendly.

The main feature is an Analyze Drawing button that sends the sketch to Google Gemini and gives back a useful explanation of what the drawing looks like, including math expressions if it can recognize them. Make the feedback feel instant and easy to read. Add the basic setup for using an API key, and keep the whole experience fast and intuitive. If you need to check current docs or implementation details, look them up online first.