The ECCapp may be useful for sea users in the Harwich/Felixstowe/Deben area. The app shows tide predictions, seven day local weather, five day wave forecasts plus other data needed for local sailing and watersports. Additionally, it shows a Map and Augmented Reality view linked to items on this site.
It runs as a WebApp, no app store. There is an option to add to Home Screen (see Data/install).

Swimscapers should select just Swimmer to start with (this selects the correct screen icon).
Download app here It can also be used from this page (apart from phone GPS and Camera).
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First Published 03Jun2026, Updated 27Jul2026