# Earthquake Risk Calculator — Building Seismic Safety Check

> Building Seismic Safety Check (iPhone/iPad app by TAHA OGUL.)

- Source: https://appshunter.io/ios/app/earthquake-risk-calculator/id6793368643 (this page in markdown: same URL + `.md`)
- Developer: [TAHA OGUL](https://appshunter.io/developer/1885106141)
- Category: Utilities, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 8 MB
- Languages: American English, Arabic, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 2 more
- Released: 2026-07-30
- Data updated: 2026-08-04
- User reviews in markdown: https://appshunter.io/ios/app/earthquake-risk-calculator/id6793368643/reviews.md

## What is Earthquake Risk Calculator?

Earthquake Risk Calculator provides a comprehensive seismic risk analysis for your building's location. All features are free.

FEATURES:
• Weighted, building-specific risk score
• Worldwide Fault Database: 13,696 active fault traces from GEM Global Active Faults
• Fault Proximity Analysis: distance from your building to the nearest active fault
• Fault Map: view nearby active faults on Apple Maps
• Location-based automatic analysis — no address typing needed
• Soil class analysis (ZA-ZE)
• Building age and seismic code compliance (code timelines for 35 countries)
• TBDY 2018 seismic zone and PGA data for Türkiye
• Structure type and regularity analysis
• Actionable recommendations with estimated cost bands
• 12 languages — switch language inside the app
• PDF report sharing — save and share your report as an A4 PDF

HOW IT WORKS:
1. Find your location while inside the building
2. Select building details (construction year, floors, soil class, structure type)
3. Get your detailed risk report instantly

RISK FACTORS:
- Building Age
- Soil Class
- Fault Proximity
- Seismic Code Compliance
- Structure Type
- Number of Floors
- Structural Regularity
- Seismic Zone (Türkiye only; for other countries no reliable regional hazard data is bundled, so this factor is excluded)

This app contains ads. There are no in-app purchases.

This app does not replace a professional engineering assessment. For general informational purposes only.

Fault data: GEM Global Active Faults Database, GEM Foundation (CC BY-SA 4.0).


## Version history (last 3 releases)

### 1.2 — 2026-08-03

• Worldwide Fault Database: 13,696 active fault traces from GEM Global Active Faults. The nearest fault and its distance are now calculated anywhere in the world. Türkiye fault data is unchanged.

• In-App Language Selection: Switch between 12 languages under Settings > Language (Turkish, English, German, French, Spanish, Italian, Portuguese, Russian, Arabic, Japanese, Korean, Chinese). Your choice is independent of your device region.

• PDF Report Sharing: Save and share your risk report as a paginated A4 PDF. Free.

• International Building Code Assessment: Your building's seismic code compliance is now evaluated against the code timeline of the country you are in (35 countries supported).

• More Accurate Location: Province/district selection has been removed. The analysis now uses your building's exact location, with improved location accuracy.

• All features are now free.

• Fixed the construction year being displayed incorrectly (e.g. "1,994").

### 1.1 — 2026-08-01

• Fault Line Map: View Turkey's active fault lines on Apple Maps
• Fault Proximity Analysis: Calculate distance to nearest fault line
• 8-Factor Risk Score: Fault line proximity now included
• Premium Mode: Ad-free experience via in-app purchase
• City/District Picker: 81 cities and ~970 districts
• Improved UX: All input fields modernized

### 1.0 — 2026-07-30

No release notes.

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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 2026-08-04.*