the Fitbit mobile app
Do you live near the shore or plan to visit? Wear a tide clock on your wrist! Set it manually or get values from tide stations in the US (NOAA), Canada (CHS), or the UK (Admiralty). Internet required to get tide station data, though the currently selected data will last without an internet connection for at least a week.
You can set a tide relative to another station, such as "Jekyll Pier times are 20 minutes past St. Simons Light times." Save frequently used stations to a favorites list and give them your own nicknames.
An optional animation fills the watch to represent the elapsed time between the previous and next tides. Choose from a variety of colors for the unfilled portion. H and L letters indicate the high and low tide times.
Hide tick marks or show them everywhere, just by the second hand, or by the second and minute hands.
Displays up to 4 (6 for Ionic) of the following: steps, distance, calories, heart rate, active zone minutes, and floor count (not available for Versa Lite).
Use Settings to customize and choose tide stations:
https://help.fitbit.com/articles/en_US/Help_article/2311.htm
Do not rely solely on these times for navigation or personal safety. Manual times are averages. And local conditions can affect any of the times.
Tap "Contact Developer" on the Fitbit's "See all details" page to see an explanation of the symbols.
After installation, KiezelPay will prompt you to pay $3.50 to use Tide Clock. Free with my Astronomy and Astro bundles.