# SeismoSense — Your Personal Seismograph

> Your Personal Seismograph (iPhone/iPad app by Cem Kaya.)

- Source: https://appshunter.io/ios/app/seismosense/id6760789453 (this page in markdown: same URL + `.md`)
- Developer: [Cem Kaya](https://appshunter.io/developer/1857265258)
- Category: Utilities, Education
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English, Turkish
- Released: 2026-03-31
- Data updated: 2026-08-11
- User reviews in markdown: https://appshunter.io/ios/app/seismosense/id6760789453/reviews.md

## What is SeismoSense?

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.


## Version history (last 1 release)

### 1.0.0 — 2026-03-31

No release notes.

## More apps by Cem Kaya

- [MyZenFlow](https://appshunter.io/ios/app/myzenflow/id6756029237)

All apps by Cem Kaya: https://appshunter.io/developer/1857265258

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-11.*