---
title: "California Earthquake Faults — App Overview"
url: https://marlvel.ai/intel-report/weather/com-innovativesolutions-calfaults
category: Weather
developer: Demosthenes Pasadis
platforms: ios, android
rating: 4.7 (4.8K ratings)
pricing: free
report_level: overview
generated: 2026-04-23
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app serves as a specialized, free reference tool for visualizing USGS-classified active fault lines in California.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Weather |
| Rating | 4.7 ★ (4.8K) |
| Pricing | free |
| Platforms | iOS, Android |
| Latest Version (iOS) | 4.0.1 |
| Latest Version (Android) | 2.0.1 |
| Developer | Demosthenes Pasadis |

<!-- SECTION: Summary -->
## What is California Earthquake Faults?

California Earthquake Faults is a utility app that provides users with location-based data on active seismic fault lines across California. It utilizes USGS data to map 115 faults and 248 fault lines, focusing on those active within the last 15,000 years. The app is designed for quick, everyday awareness of seismic proximity.

<!-- SECTION: Key Features -->
## Key Features

- **Location-Based Fault Mapping**: Identifies and displays the closest earthquake faults based on the user's current or specified location.
- **Interactive Map View**: Provides a visual interface that allows users to zoom in on specific fault lines throughout the state.
- **Distance Calculation**: Displays approximate distances from the user's location to nearby fault lines.
- **Regional Filtering**: Enables quick access to fault data for the Bay Area, Southern California, and the entire state.

<!-- SECTION: Target Audience -->
## Who is it for?

California residents and individuals interested in monitoring their proximity to active seismic fault lines.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/california-earthquake-faults/id497261775?uo=2)
- [Google Play](https://play.google.com/store/apps/details?id=org.tranquilli.earthquake&hl=en&gl=us)
- [Full Intelligence Report](https://marlvel.ai/intel-report/weather/com-innovativesolutions-calfaults)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/weather/com-innovativesolutions-calfaults).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*