TideDial

Choose your TideDial

The web app works on iPhone and Android. The Android app also includes the live Home Screen widget.

Download Android app — includes widget

Android only · version 0.1.10 · internet needed to download

Install the web app — iPhone or Android

Android: in Chrome, open the ⋮ menu and choose Install app or Add to Home screen.

iPhone: in Safari, tap Share → Add to Home Screen. Open the new icon once online and wait for “Ready for offline use”.

The web app opens the clock and forecasts when tapped. Its icon does not show a live tide widget.

Android APK installation steps
  1. Download the APK using the button above.
  2. Open the file from Downloads.
  3. If prompted, allow “Install unknown apps” for the app opening the download, then return and tap Install. Developer Mode is normally unnecessary; device security settings may add checks.
  4. Open TideDial and tap Add home screen widget.

If the Android app is already installed, choose Update. The APK and web app have separate settings. APK updates require downloading a newer APK; Chrome’s web-app Install option does not install the APK.

Red heights: unusually high or low tides

Tide band settings

Both + 1 hour covers one hour before and one hour after. Changes are saved on this device.

Use TideDial offline

Preparing offline download…

Add to your Home Screen

iPhone / iPad: open in Safari, tap Share → Add to Home Screen. Open the new icon once while online and wait for “Ready for offline use”.

Android: open in Chrome and choose Install app or Add to Home screen from its menu.

Mac: in Safari on macOS Sonoma or later, choose File → Add to Dock.

Then close TideDial, enable airplane mode and reopen its icon to check it works. The icon opens the app; it does not display a live tide widget.

About the tide data

Offline high/low predictions for 2025–2029 from Toitū Te Whenua LINZ Tauranga, Raglan, Whitianga and Port Taranaki tables. All times use New Zealand local time including daylight saving.

Locations use LINZ 2026–27 corrections from Tauranga or Port Taranaki. Whiritoa, Onemana and Opoutere Beach provisionally use Waihi Beach timing; Ngarunui, Whale Bay, Indicators and Ruapuke use Manu Bay timing. These beach proxies are estimates, not verified local corrections. Opoutere is the open beach, not the harbour. Published high and low corrections are applied separately. Where no low correction is supplied, the high correction is also used for low water as an estimate. Bowentown now uses −5 minutes for both, replacing its earlier midpoint low estimate. Athenree defaults to Kauri Point +30 minutes for both high and low water, editable as a total correction from Tauranga. This is a nearby reference rather than a verified Athenree correction. Your existing manual offset is retained.

Heights are predictions for the selected reference port above its chart datum. Raglan Harbour and Whitianga use their own heights; secondary locations retain source-port heights. They are not local water depth. Offsets change times, not heights. Weather can change actual water levels.

Red heights mark highs at or above the annual 95th percentile and lows at or below the annual 5th percentile in the reference predictions, including tied heights. These are not official king-tide dates or flood warnings.

This app downloads no live forecasts. Location and settings are saved only on this device when storage is available. No advertising, analytics, account sync or GPS. If access protection is enabled, the host handles the login separately.

Clearing site data or browser storage removal can remove the offline copy; reconnect to reinstall. Predictions expire at the end of 2029.

Data source: LINZ tide predictions. TideDial web 0.3.2.