The goal
Two waves move towards a pearl. Tap Swap, or anywhere in the play area, to exchange their speeds. You can swap again while they are still moving. Try to make the waves meet over the pearl. A closer meeting adds stronger coral growth.
Choose a mode
- Endless continues until three tides drift past.
- Daily tide gives you the same eight-round challenge for that day. You can retry it. There is no online leaderboard.
- Calm has no lives or forced ending. Choose Finish reef when you are ready.
- Use Step mode opens an untimed Calm round. Move the tide in large or fine steps, move back, hear a description of the projected meeting, choose one swap and then resolve the tide.
Pause or continue later
Choose Pause to stop a flowing tide. You can resume, restart after confirming your choice, or return Home safely. If the game closes during an unfinished tide, choose Resume on Home to continue from the saved point.
Keep and share reefs
Your result keeps the reef you grew. Choose Share reef to prepare an image and open the iPhone sharing choices. Nothing is sent until you choose where to save or send it.
Reefs keeps the latest 30 unpinned reefs and up to 10 pinned reefs on your iPhone. Pin a favourite to protect it from ordinary recent-item removal. Open a reef and choose a coral or tide row to replay its sound.
Settings and accessibility
Settings control sound effects, music, haptics, Gentle visuals and the default Calm controls. Tide Metronome also responds to Reduce Motion, Differentiate Without Colour and Increase Contrast in iPhone Settings. Controls have VoiceOver labels, and Step mode offers an untimed way to play.
Get support
Visit Tide Metronome Support or email support@rgtsoftware.com. Include your iPhone model, iOS version and a short description of what happened.