SeismoSense
Your Personal Seismograph
Free · Designed for iPad. Not verified for macOS.
100% free personal seismograph. Background monitoring, audible alerts, privacy-first. No purchases, no subscription, no ads.
SeismoSense turns your iPhone into a personal seismograph — detecting ground motion at your exact location, entirely on-device, while you sleep.
100% FREE. No In-App Purchases. No Subscription. No Ads.
PRIVACY-FIRST DETECTION
All processing happens on your iPhone. No data is ever sent to external servers. Your seismic log stays on your device — always.
HOW IT WORKS
SeismoSense uses the STA/LTA (Short-Term Average / Long-Term Average) algorithm — the same trigger method used in professional seismic networks worldwide — to continuously scan your accelerometer. When ground motion exceeds the detection threshold, the app logs the event with:
- Estimated intensity (MMI scale: I through XII)
- GPS coordinates (stored on-device only)
- Duration and detection confidence score
- P-wave and S-wave component breakdown
- Dominant frequency analysis
KEY FEATURES — ALL FREE
- Real-time seismic waveform display
- Background overnight monitoring (screen off)
- Active Monitoring Zone with live map
- Unlimited event history
- Adjustable sensitivity: Conservative / Balanced / Sensitive
- Time-sensitive notifications that break through Focus mode
- Audible alarm even when iPhone is in silent mode
- Apple Sign In or Guest mode — no account required
- Full Turkish and English localization
DISCLAIMER
SeismoSense is a personal utility app. It is NOT an official earthquake warning system. It is NOT connected to government seismic networks (USGS, AFAD, JMA, Kandilli). Do NOT use for life-safety decisions. Always follow official emergency services and government alerts.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Cem Kaya, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Cem Kaya
- Size
- 4 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English and Turkish
- Age Rating
4+
- 4+
- Copyright
- © 2026 Cem Kaya