A growing collection of practical decision tools built with analytics, statistics, and AI.
Each tool runs entirely in your browser. No account, no installation, no data leaves your machine.
| Tool | What it answers | |
|---|---|---|
| A/B Test Calculator | Is this result real, and can you trust it? | Live demo |
| Meeting Reality Check | What does this meeting cost, and is it worth it? | Live demo |
Each tool has its own folder with full documentation — click a tool name above.
Most tools give you a number and stop. The harder part is knowing what the number means, when not to trust it, and what it shouldn't be used for.
Built by Grace Ge. Building systems for better decisions.
More tools coming.
MIT — see LICENSE.