SurfTideWatch (Tide graph)

SurfTideWatch is an Apple Watch tide graph app that displays tide data and related astronomical events on your wrist. It syncs tide data from the iPhone for 10,000+ points worldwide, lets you select and rename places on a map, and stores up to five locations on the watch for two weeks of data. The app presents tides graphically and supports sunrise, sunset, high tide, and low tide information, plus watch complications to show the next tide event.

Getting tide data is straightforward: open the iPhone app, choose areas, pin places on the map, then update all to fetch data and sync to the Apple Watch. If the watch isn’t connected, you can save to iCloud for later syncing. Note that this app is designed to show tide information on Apple Watch; not for iPhone-only use, and is intended for marine activities such as surfing or fishing, but not for nautical navigation.