This is a free Android app that lets you view the UK's official tidal data without having to connect to the Internet. It's designed to be used by people who are not experts in mobile technology and who want to keep their mobile device battery-friendly, so data download should not be excessive. It will work offline.

Once you have downloaded the app you can use it to view UKHO standard port tides for any time of the year, and the app will also calculate secondary port tides using either your own offset data or the app's built-in offsets. This app can be used to view UKHO standard port data up to a year in advance. It can also calculate the secondary port data for multiple ports.

The app will display the current Met Office Inshore Forecast, which is the UK's official forecast of the sea surface. It can also be used to view the UK's official marine forecast.