Install Open Heart

Open Heart is on iPhone and Android. Install it, open it, and you're in. No email needed to start. No social login. No account creation form.

Open Heart runs on iPhone and Android. There's no web app — your entries live on your phone.

iPhone

Open the App Store
Search for Open Heart: Couples Check-In
Tap Get
Works on iPhones running iOS 16 or later

Android

Open the Play Store
Search for Open Heart: Couples Check-In
Tap Install
Works on Android phones running Android 10 or later

After installing

The app opens to a welcome screen. Tap Get started. You don't have to create an account, hand over an email, or pick a password — Open Heart sets up your account quietly in the background.

If you want to use the couples features, your partner installs the same app on their phone, and you send them a link from inside Open Heart to pair up.

Already have a recovery phrase?

If you've used Open Heart before and saved your 24-word recovery phrase, tap I have a recovery phrase on the welcome screen. Type your words and the app will pull down your past entries. (Recovery phrase)

What gets installed

The app itself (a small download)
A spot on your phone where your entries live (locked, only you can read it)

What doesn't

No tracking that follows you to other apps
No notifications you didn't ask for. The app asks for permission only when you turn on a feature that uses them.