FREE IPHONE APP · PUBLIC TESTFLIGHT BETA

Know when to go.
Learn what to notice.

Find a shore
Oh Tidepool Explore screen with a tip row and site cards for Cabrillo, Dike Rock, and Pelican Point, showing tide windows and conditions.
Understand the tide
Dike Rock's actual tide-chart screen, with NOAA predictions, daylight shading, and the orange site tide-guide line.

Tap a screen for the full-size image.

Oh Tidepool is your pocket companion for rocky shores. Find a place to explore, understand the tide, and learn about the life between the rocks.

Try the free TestFlight beta

Made for curiosity, learning, and thoughtful visits.
Public testing on iPhone, not an App Store release.

WHAT YOU CAN USE IT FOR

A little preparation.
A lot more to notice.

The app brings planning and learning together, so you can arrive curious and leave the shore as you found it.

  1. Find a place to explore

    Browse mapped sites, in a list or on a map. Tidepool guides and Discovery sites are clearly distinguished.

  2. Plan around the tide

    Read tide predictions, charts, and daylight exposure windows alongside surf, weather, and site hazards. Tidepool sites have their own reviewed tide guides; Discovery sites use a nearby gauge and a borrowed guide, marked Best estimate.

  3. Learn what you're looking at

    Open What to look for at a site to learn the names and habits of shoreline animals. The pocket field guide helps you recognize what you notice, without promising what you'll see.

  4. Build thoughtful visiting habits

    Discover reviewed tips about tidepool life and care. Swipe for another, or open the full explanation and its source.

  5. Get a reminder to plan your visit

    Choose optional plan-visit alerts that follow tide and weather, with surf mentioned in the notification. Alerts are a planning tool, not permission to enter the shore.

Actual Dike Rock tide-chart UI with the prediction curve, daylight, and site tide-guide line.
Read the tide in the app.Tap for the full-size image.
Watch the Explore list switch to the map
Both kinds of site in the list, then on the map.
Text description of the recording

The Explore list labels cards Tidepool or Discovery site. It scrolls through site cards, including Pelican Point, then switches to a map of the sites.

IN THE APP / THE FIELD GUIDE

Put a name to
a small discovery.

An animal you might have walked past becomes something to notice. The field guide helps you learn about the shore while keeping its inhabitants where they belong.

Open What to look for at your chosen shore. Animal names, descriptions, and photographs sit beside your visit information, with reminders to observe without disturbing them.

See the app's anemone photo view

Field-guide entries describe shoreline life. They are not a sightings forecast.

Dike Rock's What to look for section in Oh Tidepool, with aggregating anemone, limpet, and periwinkle names, scientific names, and descriptions.
What to look for at Dike Rock.Tap for the full-size image.

IN THE APP / LEARN AND PLAN

Useful before the trip.
Thoughtful at the shore.

A tip while you browse

Reviewed tips sit in the Explore header. Swipe for another, swipe back, or tap to read why it matters and follow its source.

Optional visit alerts

Choose locations and your availability. Alerts use tide and weather criteria; the notification also names forecast surf as context, not a promise about conditions.

Notifications are optional. Treat an alert as a reminder to recheck the shore, not permission to enter it.

Swipe between tips, then open the full explanation.
Text description of the recording

The Explore header starts on LOOK CLOSER with a tip about shore crabs. A swipe changes to TIDEPOOL ETIQUETTE; a swipe back restores the previous tip. Tapping opens the full text, WHY IT MATTERS, and Open the source.

FREE, AND MADE FOR LEARNING

A field companion,
not a permission slip.

Oh Tidepool is a free app for learning about the shore. Its purpose is outreach: help people understand the tide, recognize shoreline life, and develop habits that leave tidepools undisturbed.

A planning aid, not an official safety decision. Surf above a site's guide is a caution to go with care; a high tide can close the exposure window. Follow posted rules and closures, watch the water, and turn back when the shore doesn't match your plan.

OH TIDEPOOL · FREE IPHONE BETA

Take the app
on your next shore day.

Try the site list, tide charts, field guide, reviewed tips, and optional alerts. Oh Tidepool is in public testing on TestFlight, not an App Store release.

Join the free TestFlight beta

Install Apple's free TestFlight app, then open the join link on your iPhone. No invitation or Oh Tidepool account needed.

testflight.apple.com/join/pNysjdxG

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