A collection of useful tools and utilities
Find Bay Area private schools by grade, tuition, and location.
Find El Gouna restaurants by distance, cuisine, and dining type.
Find nearby Lyft bike stations with real-time availability.
An interactive game to practice prime factorization.
Show differences between two PDF files visually.
Clean AI-generated markdown for Google Docs compatibility.
Convert Markdown to a valid EPUB 3 file in your browser.
Single player game to teach kids the Kelly Criterion.
A tool to teach toddlers numbers using dot cards.
Scramble words while keeping first and last letters intact.
Compress images with adjustable quality and compare file sizes.
Learn how to calculate percentiles and visualize data distributions.
Learn to solve mixture problems with an interactive tutorial.
1D dungeon crawler game. Tilt to move, shake to attack! (Mobile only)
Make a 3×2 montage from one photo. Print at 4×6 for six 2-inch passport photos.
Draw polygons on a map to analyze which USA zip codes are enclosed.