Shipped, live, and in use.

A free emergency directory for Negros Island: 291 sourced ambulance, fire, police, coast guard, hospital, and clinic numbers across 48 municipalities, with a live hazard feed alongside. Live on the web in seven languages, with native apps on the way to the stores.

Native Android (Kotlin, Jetpack Compose), a SwiftUI port, and a Next.js web directory that all share the same backend. Express, Prisma, and Postgres on Railway with shared TypeScript contracts and codegen. Android is in closed testing on Google Play and iOS is working through App Review.

• 291 sourced contacts
• 48 municipalities, 2 provinces
• 7 languages on the web
• 1,600+ automated tests

Every known ice rink in the United States on one clustered map, with a county-level analysis of who lives farthest from a sheet of ice.

A pure-stdlib Python pipeline pulls facilities from OpenStreetMap, merges nearby features into single rinks, and scores every county against the Census 2020 population centre. A hand-verification override layer sits on top, starting with Pennsylvania. Fifty state pages are generated at build time from validated JSON.

• 1,802 facilities
• 1,948 sheets of ice
• 50 state pages
• County gap choropleth

The court guide for pickleball in Dumaguete and the towns around it: where to play, what it costs, when open play runs, and what to bring.

Built from a community-maintained venue sheet, restyled to a dark neon brand, with an interactive OpenStreetMap layer and click-through venue details. A native Android companion app in Jetpack Compose ships the same data offline.

• 95 venues
• 5 municipalities
• Interactive map
• Android companion app

A storefront for a small-batch peanut butter brand in Negros Oriental, built ahead of launch. Food sold in the Philippines needs FDA registration first, so until then the store shows the jars with no prices, cart, or ordering.

Next.js 15 on Vercel. The commerce core is built and tested ahead of checkout: prices in integer centavos computed server-side, an order state machine, and shipping-quote safety rules. One pre-launch switch keeps prices, the cart, and every sales offer off the site until registration clears. PayMongo payments and Flash Express shipping are the launch milestone.

• Pre-launch mode
• Integer-centavo pricing
• Order state machine
• PayMongo at launch

A booking system for a scooter and motorcycle rental that handled every booking over chat: riders pick a bike and dates, see live availability and an instant quote, and pay a deposit online. It now runs as a demo with bookings and payments switched off.

Next.js on Vercel. Eight bikes with daily and weekly rates, live availability so a booked bike cannot be double-booked, and a one-day deposit through PayMongo (card, GCash, Maya) with the balance settled at pickup. Rental terms, an FAQ, and an admin view of every booking.

• 8 bikes, daily and weekly rates
• Live availability
• PayMongo deposit flow (off in the demo)
• Admin view of every booking

Independent backtests of people who sell trades, published in full with the methodology, the code paths, and the results we could not resolve.

Four reports so far: 951 ShadowTrader ideas over 19 years (a coin flip), a 425-trade Pirate Traders T2 dip-buy with walk-forward validation (real edge), a WTI mean-reversion setup, and a 271-video audit of a German Bitcoin YouTuber where transcript extraction precision capped what could be claimed.

• 4 published reports
• 951 ideas scored
• 425 futures trades
• 271 videos audited

Which doctor is at which hospital, when. A searchable directory for Dumaguete with multi-hospital schedules and an "available now" view.

Express and Prisma on Railway with a React front end. Doctor-to-hospital affiliations carry their own schedules, specialties, and insurance coverage; a unified weekly calendar overlays them. Public read, admin-gated writes, full audit log.

• 5 hospitals
• 40+ doctors
• Weekly calendar view
• Audit trail