Link one partner
Connect with a private invite code and choose the rhythm that fits your relationship.
A private couple journal
Three short prompts give both of you room to write honestly. When you both finish, your heartbeats become one shared memory.
Choose a daily or weekly rhythm. Available for Android and iPhone.

Not a live chat. Not a public feed.
A quiet place for two perspectives.One shared rhythm
Pick a daily or weekly rhythm, then complete the same three prompts in your own space.
Connect with a private invite code and choose the rhythm that fits your relationship.
Add a thought or photo to each prompt without seeing your partner’s answers first.
After both of you complete all three, read the two perspectives together and keep them in Memories.
Inside HeartSync
These are real screens from HeartSync. Write your heartbeats, revisit shared memories, and see both sides once a period unlocks.



Beyond the check-in
Save photos with your heartbeats, search past memories, count down to an anniversary, or write a love note for the right moment.
Add images and revisit the days or weeks you shared.
Count down to what is coming or count the days since a meaningful date.
Send one now, at an exact time, or as a surprise inside a window you choose.