Hey PH 👋 I'm Andy. I run TapWaterData.com — a free site where ~120k people a month look up what's actually in their tap water. For two years, the same two questions kept showing up in my inbox: 1. "OK, so my water has lead / PFAS / chlorine — how much should I actually drink?" 2. "I'm on Ozempic and I literally forget to drink water. Help." I went looking for an app that handled both. There wasn't one. So I built Waterd. Six months, solo, iPhone only for now. What it does: → Pulls your tap-water quality from SDWIS / UCMR5 / CCR (the same data on TapWaterData) → Sets a daily hydration goal that adjusts for weather, your activity from Apple Health, and what's in your water → One-tap logging from Lock Screen, Home widget, Dynamic Island, or Apple Watch → Two-way HealthKit sync → On-device AI insights (iOS 26 / Apple Intelligence) — nothing leaves your phone What's free: everything in the core experience. Logging, reminders, water quality, widgets, watch app, HealthKit. No ads, no data sold. What's paid (optional): one feature — reminders that learn your schedule (timing, not just frequency). $1.99/mo, $4.99/yr, or $7.99 lifetime. I'd rather you tell a friend than buy the upgrade. Things I'm specifically curious about from PH: • Is the "first to combine these two things" framing clear, or does it sound like marketing? • If you're on a GLP-1, does the thirst-suppression angle resonate? • Android — possibly, eventually. Tell me if it matters. Will be in the comments all day. Reply with hard questions; I'd rather get them here than in a 1-star review. — Andy

Waterd

Hydration that knows your tap.

Hydration that knows your tap.