Support
Frequently Asked Questions
Does My Tides work offline?
Yes! All tide predictions are computed entirely on your device using harmonic analysis. No internet connection is needed.
How many tide stations are available?
My Tides includes 6,386 tide stations spanning every ocean and coastline worldwide.
How do I add a Home Screen widget?
Long-press on your Home Screen, tap the + button, search for My Tides, and choose from four widget sizes.
Can I use My Tides on my Apple Watch?
Yes! My Tides includes a companion Apple Watch app with complications so you can check tides from your wrist.
How accurate are the tide predictions?
My Tides uses official harmonic constants to compute predictions. Accuracy is comparable to government tide tables, though actual water levels may vary due to weather conditions.
Why is my station not listed?
My Tides relies on stations with published harmonic constants. If your station is not available, try searching for a nearby station in the same waterway.
What are tide coefficients?
Tide coefficients indicate the strength of a tide relative to average conditions. Higher values mean larger tidal ranges, which is useful for fishing, sailing, and coastal activities.
Which devices are supported?
My Tides runs on iPhone, iPad, Mac (via Mac Catalyst), and Apple Watch. It requires iOS 26 or later.
Contact Us
Have a question, found a bug, or want to request a feature? We would love to hear from you.
You can also email us directly at support@mytides.xyz