The apps blurb lied about "can... provide data from around the world"
The blurb says "can... provide data from around the world". However, after purchase, it said that every one of the major city names I entered in Japan were "not near a known tide station" - including the capital, Tokyo. This is false. (I know this because I then bought a Japanese-language app - and it knows tidal results even for small towns.) The blurb should state exactly which countries are covered. I wanna refund.
sPleeNomega about
Wolfram Tides Calculator, v1.0.0