Purchases

Tidal Pool is free to download with 3 days of full access. You start this period locally without a subscription or charge. Afterward, an optional one-time purchase unlocks the app permanently. Apple or Google handles purchases, restores and entitlement checks; the app does not receive payment-card or billing-address details.

Store access terms in every supported language · Updated September 6, 2026

TidalPool

Time the coast. Meet the residents. Leave no wake.

TidalPool is a privacy-first tidepooling companion with an offline species guide and fresh or cached government tide predictions — built around a look-don't-touch ethic.

Next predicted low tide + multi-day tide windows (NOAA + Canadian Hydrographic Service; internet required to refresh)
A field guide to tidepool species, with danger and first-aid notes for the few that bite or sting
A private journal of your finds — photos and notes stay on your device
United States & Canada · localized across 39 app and store locales

Start with 3 days of full access; afterward, an optional one-time purchase unlocks TidalPool permanently. No account, subscription, ads, analytics, or tracking. Journal content stays on your device; tide requests send a public station ID and date range to the relevant government service, which also receives normal connection information such as an IP address. Predictions are for general planning only — not for navigation or safety-critical decisions. TidalPool is not affiliated with or endorsed by any agency.