Live Tools
Apps I've Built
Real products solving real problems — built from scratch, shipped, and in use today.
TimeSpanCalc
Free online date & duration calculator
A precision date calculator with three modes: calculate the span between two dates (SPAN), find a future or past date (LAND), or total up multiple durations (TOTAL). Privacy-first — no tracking, no account, no cookies.
Design philosophy: Bauhaus minimalist — form follows function. Language as interface.
- SPAN — calculate exact days, weeks, or years between two dates
- LAND — find a date N days/weeks/months/years from any starting point
- TOTAL — accumulate up to 8 durations with mixed units
- Business days mode (Mon–Fri only)
- Time-of-day precision with HH:MM input
- Full keyboard support + copy to clipboard
- PWA — works offline, installable on mobile
- Zero tracking. No cookies. No account required.
US–Canada Tariff Simulator
See how tariffs affect prices in real time
An interactive economic simulator that shows the real-world impact of US–Canada tariffs on consumer goods, employment, and economic indicators. Slide from 0% to 100% tariff and watch the numbers change.
Built during the 2025 US–Canada trade dispute to help people understand real economic impact — not just headlines.
- 11 tariff levels from 0% to 100%
- Real-time economic indicators (CPI, trade volume, job impact)
- Consumer goods price impact (beer, cheese, hockey sticks, and more)
- Historical context narrative for each tariff level
- Mobile-responsive collapsible sections
