The problem

Finding a toilet in an unfamiliar city is harder than it should be. They’re spread across stations, museums, parks and cafés, and the details that decide whether you can actually use one (opening hours, a fee, customers only, a key or code, step-free access) are usually missing from map results. The real question isn’t “where is the nearest toilet”, it’s “which one can I use right now”.

What we built

Phoo opens on where you are, with the closest usable toilets listed first. Each one shows an estimated walking time, whether it’s open, what it costs and how you get in. Where nobody has confirmed a detail, the app says so instead of guessing.

Filters that matter. Open now, free, wheelchair accessible, baby changing and no purchase needed.
When you don’t speak the language. The words on toilet signs and a polite request in the local language for 60 languages, plus a request card you can show at a venue. All stored in the app, so it works without a signal.
Kept current by the people who use it. Confirmations and problem reports on each toilet, with the date of the last confirmation.
Beyond the phone. An Apple Watch app with the nearest toilets, Home Screen and Lock Screen widgets, and a Control Center shortcut.
Private. No account, no ads, and no movement history.

Behind the app is a directory built from OpenStreetMap data and moderated community updates. A PostGIS backend serves it in small map cells that the app caches and revalidates, so a dense capital loads as quickly as a village. Accessibility is tested in code: contrast checks against WCAG in light, dark and Increase Contrast, plus Apple’s accessibility audit run in UI tests.