01 · NOW
A tide answer at a glance
See the next high or low, current height and direction, sun and moon context, and the station’s local time zone.
Thirty days on your phone
Know what the tide is doing now.
Ebb turns NOAA tide predictions into a clear countdown, an arbitrary-minute curve, and local alarms that keep working when your signal disappears.
Tide predictions are not observations and are not for navigation. Never use Ebb to decide whether conditions are safe.
OCEAN CITY INLET · MD · NOAA 8570283
NEXT
2h 14m
to high tide · falling now
OFFLINE · SAVED PREDICTIONS
Built for the shoreline
The useful parts stay with you.
No account, no ads, and no direct NOAA call from your phone. Ebb stores validated predictions locally, uses station time, and never extrapolates beyond saved coverage.
02 · SCRUB
Ask about any minute
Drag the 36-hour curve to inspect an exact time. Rising and falling water use both color and stroke, with an adjustable screen-reader control.
03 · OFFLINE
Thirty days cached
Saved predictions, places, appearance, and alarms live on your device. The app clearly marks stale, near-edge, and exhausted coverage.
04 · ALARMS
Local reminders, no push token
Choose high, low, or minus tide and a lead time. Ebb schedules from cached tide events on the device, including in airplane mode.
Privacy by architecture
Your coordinates stay on your phone.
Ebb asks for one foreground location fix only after you request the nearest-station feature. The coordinate is used on the device, discarded, and never placed in a request, log, analytics event, crash report, or support payload.
Ebb has no user account. Optional production analytics are limited to a random installation identifier, allow-listed feature-use events, and sanitized diagnostics. There is no advertising ID, tracking, sale, or cross-app profile.
Source and safety
Prediction, not observation.
Ebb shows astronomical tide predictions. Wind, air pressure, storm surge, river flow, waves, and local conditions can make actual water levels differ. Tide predictions and station metadata come from NOAA CO-OPS, a United States public-domain source. Ebb is independent, is not affiliated with NOAA, and is not endorsed by NOAA or the United States government.