# Apps built and run by dcArock

Source: https://dcarock.com/apps

## DayQuizz

Ten fresh questions a day in English, Spanish, Math, History, Science and Trivia — keep your streak alive and climb the leaderboard.

More: https://dcarock.com/apps/dayquizz (Markdown: https://dcarock.com/apps/dayquizz.md)

## STL Ruler

Add dimensions to STL files online. Drop a 3D model, get clean annotated drawings for Etsy listings, quotes and manufacturing — in seconds.

More: https://dcarock.com/apps/stl-ruler (Markdown: https://dcarock.com/apps/stl-ruler.md)

## PlyFill

Drop SVG or DXF files and fit the most parts onto every plywood sheet — with live yield, scrap and offcut numbers.

More: https://dcarock.com/apps/plyfill (Markdown: https://dcarock.com/apps/plyfill.md)

## STL PhotoStudio

Drop an STL, GLB, OBJ or 3MF and shoot it like a real product — backdrops, softboxes, real materials and path-traced renders.

More: https://dcarock.com/apps/stl-photostudio (Markdown: https://dcarock.com/apps/stl-photostudio.md)