HalfmoonTideline

TidelinemacOS

Tide times and surf forecasts in your menu bar.

Testimonials

“I check it before every session. The menu bar reading is the whole app for me and it is right far more often than the two apps I used before.”
Rob H.Aug 2026🇬🇧
“I reported a two-minute error in the sunrise time expecting to be told it did not matter. Instead I got an explanation of why it was happening and a fix a few weeks later that agrees with my almanac to the second.”
Marion T.Jul 2026🇬🇧