Name: Tides GB - Data Plugin
Rating: 5 (1 reviews)
Author: GreenBlack

Tides GB brings tide data to my watch faces. Install it, set a location, and any of my compatible watch faces can show the next tide, next high or low tide, their heights and the time until the next tide. The app keeps the tides up to date in the background, and your watch face shows them.

The app itself shows the next high or low tide, its height, and a daily graph showing every tide time and height. Previously saved data is available offline.

- Save up to three locations. Location 1 can use your GPS position.
- Enter coordinates in the app settings and see the place name found, so you can check that the location is correct.
- Show heights in meters, feet, or your watch's system unit (the default).
- Show tide times in the location's local time (the default), as listed in tide tables, or in your watch's time.
- My watch faces show the tides for Location 1. The next tide, next high tide, and next low tide are also available as complications on other watch faces.

Choose a tide source for each location. Auto selects the best free source available and does not require an API key. If no free source covers your location, the app will let you know:

- NOAA: official predictions for the USA. No key required.
- CHS: official predictions for Canada. No key required.
- Rijkswaterstaat: official predictions for the Netherlands. No key required.
- Open-Meteo: worldwide coverage with no key required. This is a global model estimate, so results near the coast can be an hour or more off. Enclosed waters are not covered.
- Calculated: no key required. After a one-time download for each location, it works offline. It calculates tides from measurements at the nearest of around 2,600 tide gauges worldwide. It works best near a gauge, and the app shows the distance to it.
- TideCheck, WorldTides, and Stormglass: worldwide coverage. These sources are used only when selected and require your own API key, which you enter in the app settings. TideCheck sends too much data for the background, so it only updates while the app is open.

Locations entered from your phone start updating after you open the app once.

Full guide, setup help and troubleshooting: https://watchface.io/docs/tides-plugin

Not for navigation. Always check official tide tables when safety depends on it.

Data: NOAA, Canadian Hydrographic Service, Rijkswaterstaat, Open-Meteo (CC BY 4.0), TideCheck, WorldTides, Stormglass, TICON-3 (Hart-Davis et al., CC BY 4.0). Place names: OpenStreetMap contributors.

This is an independent, third party app. I am in no way affiliated with, endorsed by, or associated with any of the tide sources or data providers named here.