Off-line worldwide tide prediction using NOAA/XTide harmonic data files.

aTides is a completely off-line worldwide tide prediction application using NOAA/XTide harmonic data files.

It is based on code from uTides which in turn is based on xTides. If you are familiar with how xTides works you will be familiar with aTides. aTides however only contains a subset of features from xTides.

What this essentially this means is that I have no control over data files so please try the free version first to see if the areas you want are included before buying this app.

PLEASE NOTE: The 'Non-Free' region which previously contained ports for Canada and some areas of the UK, Germany and Holland that may not be in the Europe region is now defunct - as of 2020 there is no data for these ports, please do not ask for this back as public domain data for these ports after Jan 2020 does not exist.