Log a contact
One tap is enough. Add details only when they truly matter.
Heart HeaterA personal relationship warmth tracker
People never leavethe heart.
Heart Heater helps you remember important people, log moments of contact and notice how the warmth of a relationship changes over time.
No account. Your data stays with you.
Today
Someone close
Anna
The warmth is holdingLast contact — yesterday
Initiativea gentle balance
+5 warmth
Simple, not superficial
One small ritual of attention
The app does not turn closeness into a spreadsheet. It simply helps you keep hold of what matters amid the noise of ordinary days.
Notice the rhythm
The heart warms through contact and slowly cools during pauses — without blame or rating the person.
See patterns
Your contact history helps reveal the balance of initiative and how you feel after communicating.
Local-first privacy
Privacy policy Your relationships are not our data
Heart Heater 1.0.0 creates no account, sends no names, notes or contact history to the developer, and uses no advertising trackers. A backup appears only when you request it.
In the browser and on Android
Open it — and your heart is close
The web version works on phones and computers without an app-store install. On Android, you can also download the installable APK.
- the core features of the mobile version;
- local storage in your current browser;
- backup export and restore.
Android 0.4.1 · 102 MB. Android may ask you to allow installation from your browser.
No fine print
Frequently asked questions
Does Heart Heater judge my relationships?
No. The app does not decide whether a relationship is good or bad. It only shows the contact rhythm you chose and helps you notice changes over time.
Where do names and notes go?
In version 1.0.0, data is stored locally on your device. There are no accounts, advertising profiles or server synchronization.
Can I move my data?
Yes. The app offers an explicit backup export and restore. A file is created only when you choose to do so.
What is included in the web version?
The core mobile experience: people, quick contact logging, history, heart warmth and backups. Data stays in your current browser.