The most beautiful and trustworthy tidepool companion for iPhone and iPad. Tide windows, curated species, look-don't-touch ethics. Photos and notes stay on your device.
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Live tide windows for the United States and Canada.
Interface available in English and French (US + Canadian variants of each).
Native, live tide-station coverage from each country's official hydrographic service. We only ship tides we can verify on real APIs.
28 stations across the Pacific Coast (Monterey, Olympic, Big Sur), Atlantic (Acadia, Cape Cod, Outer Banks, Sanibel), and Hawaiสปi. Live, multi-day predictions including a year-long Minus Tide Calendar.
Source: NOAA Tides & Currents โ public domain.
5 stations: Bay of Fundy (Saint John, Halifax) and BC Pacific (Vancouver, Tofino, Prince Rupert). Live, multi-day predictions; Bay of Fundy minus tides reach world-record extremes.
Source: Canadian Hydrographic Service IWLS API.
Editorial prose covering the Pacific Coast (US + BC), the Atlantic Coast (US + Maritimes), and Hawaiสปi. Every dangerous species flagged with a first-aid quick reference.
Pulls from NOAA. Tells you when to be there, when to leave, and whether you'll need a headlamp.
The 12 best windows at your coast this year, surfaced as a year-at-a-glance heat map. Plan around them.
Pacific Coast, Atlantic Coast, Hawaiสปi, Canadian Maritimes. Editorial prose, not Wikipedia stubs. Every danger flagged.
Per-jurisdiction ethics. First-aid quick reference for the species that can hurt or kill you.
Drop a coin in your photo. Two taps later, the species is measured to the millimeter โ without ever lifting it.
Photo, GPS, tide height, species. Local-only. EXIF stripped on share. Your record, your private record.
Counts down the safe window from your Lock Screen and Dynamic Island. You'll know when to walk back.
System serif typography, a hand-tuned palette of foam, sand, kelp and ocean teal. Built iPhone- and iPad-first.
Home Screen and Lock Screen widgets show your next low tide and the week's best windows.
You own Fylling's paper guide, you know what a chiton's home scar looks like, and you want a digital companion that doesn't patronize.
Your kid found a sea star. They want to know everything. You want safety, beauty, and zero embarrassing clip-art.
One window in Monterey, the Bay of Fundy, or Acadia. Make it count: the right tide, the right pool, the right respectful behavior.
You shouldn't need an account to look at a sea star.
No analytics, no SDKs, no telemetry. Ever.
Your photos, journal, and station preferences stay on your device.
Tidal Pool is available on the App Store and Google Play. No subscription, no ads.
NOAA tide data is public domain. Smithsonian and iNaturalist contributors keep us free of stock-photo gloss.
"Data Not Collected." We mean it.