Work | Joe Gullo

Products I build and run

Shipped software, held to the standard I audit against.

WCAG AAA

Joe Gullo Digital

2026

Sluip — Privacy-First Cycling PWA

Sluip is a privacy-first cycling tracker delivered as a single HTML file. No servers, no accounts, no telemetry — €14.99, once.

WCAG AAA in both light and dark themes

Touch targets 44×44 minimum — 56×56 for the ride-pause control

Ride state never signaled by color alone

Fully keyboard operable, screen-reader tested

Zero accounts, cookies, or tracking

One HTML file — no server, no dependency tree

PWA Leaflet IndexedDB WCAG AAA Vanilla JS

Proves AAA is achievable without a budget

EN/NL parity

Joe Gullo Digital

Active 2026

Nog Open — Privacy-First "What's Open" PWA

Nog Open answers one question: Wat is er nog open bij jou in de buurt? — what's still open near you. It covers seven Dutch cities and more than 2,500 places, and runs without accounts, cookies, or tracking.

Full EN/NL parity — errors, empty states, and the language switch hold their place

Dutch public-holiday awareness in opening hours

WCAG AAA compliant

Seven Dutch cities, 2,500+ places

Zero accounts, cookies, or tracking

Installable PWA, works offline

PWA Leaflet OpenStreetMap WCAG AAA Vanilla JS Overpass API PHP

Proves Language parity done properly — the thing I check in every Medium audit.