FrankCo is a one-person software studio.
Design, engineering, and operations in the same head: interactive tools, learning platforms, and client systems — built, tested, and running in production.
Live — a real ladder-logic engine runs this machine, sixty sweeps a second. Hover the parts; click a float to force it — or focus the machine and use the arrow keys.
Selected work
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Tlamatini
LiveA subscription platform of interactive tools and courses for trades, students, and pros — from a ladder-logic simulator with running machines to structural math.
Next.js · React Three Fiber · Stripe · Supabase — ~300 pages, 40+ tools, live in production with real users.
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saktzi
LiveSeventeen free calculators for practical math and the trades — instant, static, no accounts, no ads.
Astro · Tailwind · Cloudflare Workers — fast by construction.
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Tlamatini PLC for mobile
Store-readyThe PLC area as a native app: touch-first ladder builder, live simulation on a Skia canvas, and a troubleshooting trainer — the web engine ported, not rewritten.
React Native · Expo · RevenueCat — 169 tests, CI green, prepared for the App Store and Google Play.
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235 Construction
Client workAn estimate and invoice workbook with live formulas, shaped around a working construction crew's real quoting flow.
Delivered July 2026.
Work with FrankCo
One person — Francisco — carries your project from first sketch to running software: no handoffs, no telephone game. If that is the kind of build you want, write.
hello@frankco.io