HeartSync: Love Diary

In-app purchases
Content rating
Everyone
100+
Downloads
Content rating
Everyone
Users Interact
Learn more
Screenshot image
Screenshot image
Screenshot image
Screenshot image
Screenshot image

About this app

Keep a love diary with your partner. You each write three short heartbeats, and your check-in stays private until you both finish. Your partner has a reason to come back and write theirs.

Each day or week, you and your partner answer the same three prompts, which HeartSync calls heartbeats: something sweet your partner did, a moment that made you smile, and a reason you're grateful. You write yours, they write theirs, and neither of you can read the other's until you've both finished. Then the check-in opens for both of you at once.

Most journals get abandoned because nobody else is waiting on them. In HeartSync your partner is, and you're waiting on theirs.

WRITE SEPARATELY, OPEN TOGETHER

Your couple jornal doesn't need polished words. Write what you meant about the day, then read your partner's side when you've both finished.

THREE GOOD THINGS, FOR TWO

Writing down three good things is a well-known gratitude practice. HeartSync makes it a shared journal, so it's something the two of you do together instead of alone.

MEMORIES

Every check-in you both finish becomes a moment in Memories, with its photos. Search your moments, or pick a date on the calendar to find one.

YOUR RUN

HeartSync counts the check-ins you finish back to back. Miss one and the run starts over. The app keeps your best run and doesn't nag you about it.

MILESTONES

Anniversaries, trips, first dates, the day you moved in. Count down to the next one or count the days since.

YOUR RHYTHM

Journal daily or weekly, and pick a reminder time that suits you. You'll get a nudge when your partner has written.

WHISPERS

Send a doodle, a photo or a single line to a widget on your partner's home screen. You choose how long it stays.

LOVE NOTES

Write something now and have it arrive later, at a time you set or as a surprise.

JUST THE TWO OF YOU

You and your partner keep this relationship journal together. Link with a private invite code; what you write stays hidden from each other until you've both finished the check-in.

FREE AND PREMIUM

Free: the full journal, Memories, your run, reminders, Whispers, love notes, up to 3 milestones, and photos on your first 3 check-ins.

Premium: photos on every check-in (up to 5 each), unlimited milestones, the milestone home screen widget, Whisper history, and no ads. Premium is a monthly subscription that renews automatically unless you cancel it in Google Play.

Terms: https://heartsync.webdevnc.com/terms/
Privacy: https://heartsync.webdevnc.com/privacy-policy/
A shared journal for couples. Write separately; read together when both finish.
Updated on
Oct 14, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, Photos and videos and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

New: lock the app with your fingerprint, face or screen lock. Seal a letter for your partner to open later. Add a voice clip to a check-in. Milestone reminders. Pick colour themes, fonts and journal covers. Fresh prompts, monthly look backs, a weekly "Who wrote this?" round, and a photo grid and past-years throwbacks in Memories. Some of these are part of Premium. Fixed: the milestone widget on Android 10 and 11, lost typing in a heartbeat, and your first heartbeat now carries through sign-up.