English

<aside> 🔒

Plain-language summary: House ECG keeps raw motion recordings, local history, long-term initial values, and your event labels on your iPhone. Cloud services are used only when you choose to enable email notifications. Raw sensor waveforms are not uploaded to House ECG servers.

</aside>

Effective date: August 15, 2026

Version: 1.0

Contact: [email protected]

1. Who we are

House ECG is a field-observation app operated by House ECG / ChartGreen Consult Ltd. It uses a dedicated iPhone's motion sensors to observe changes in a building's vibration pattern over time.

House ECG is not a certified seismometer, earthquake early-warning service, structural safety certificate, or substitute for an inspection by a qualified professional.

2. Information that stays on your iPhone

The following information is stored locally in the app's SQLite database and is not uploaded as raw sensor data:

• Accelerometer and gyroscope samples and saved event waveforms.
• Candidate-event history and derived vibration results.
• Installation and placement information.
• Long-term initial values used to compare the same installation over time.
• Labels you add, such as earthquake-like, false alarm, or uncertain.
• Local app settings.

If you use Apple's iCloud Backup or device-transfer features, Apple may transfer the app and its local database to another iPhone under your Apple account. That process is controlled by Apple and is not a House ECG cloud synchronization service.

3. Information processed when email notifications are enabled

Basic monitoring does not require an account. Sign in with Apple is requested only when you enable email notifications.

Depending on what Apple provides and the choices you make, we may process: