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Side Project
2026

Sluip — Privacy-First Cycling PWA

Personal Project

Outcome v1.0 shipped
Year 2026

About

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

It's built to WCAG AAA in both light and dark themes, a stricter bar than the EAA requires. That wasn't a marketing decision. The usual argument against accessibility-first design is budget, and Sluip is the smallest scale that argument can run on: one developer, one file, one price point. If AAA is achievable here, the budget objection doesn't hold for a funded team.

The interesting constraint was the dark theme. Most "dark mode" palettes clear AA on body text and quietly fail on the form controls. Getting both themes past the AAA thresholds took two passes.

Open it and check. Turn on a screen reader, tab through it, resize the text. The claim is only worth what you can verify.

Highlights

Zero accounts or tracking
WCAG AAA compliant
Offline-first architecture
GPX & CSV export

Technologies

PWA Leaflet IndexedDB WCAG AAA Vanilla JS