# California Earthquake Faults > Locates and displays California earthquake faults by current or specified location. (iPhone/iPad app by Demosthenes Pasadis.) - Source: https://appshunter.io/ios/app/california-earthquake-faults/id497261775 (this page in markdown: same URL + `.md`) - Developer: [Demosthenes Pasadis](https://appshunter.io/developer/1531387070) - Category: Weather - Price: $1.99 - Rating: 3.00/5 from 2 App Store ratings · 5 written reviews indexed - Age rating: 4+ - Requires: iOS 16.6 · 22 MB - Languages: English - Released: 2012-02-02 - Data updated: 2026-09-01 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/california-earthquake-faults/id497261775/reviews.md ## What is California Earthquake Faults? California Earthquake Faults helps you quickly locate earthquake faults based on your current location or a location you specify. Features: • Interactive map view • Shows closest faults • Allows zooming in • Displays distances to faults • Quickly displays faults in the Bay Area, southern California and the state The vast majority of California faults the USGS classifies as "Historic" (active in the last 150 years) and "Holocene to Latest Pleistocene" (active in the last 15,000 years) are shown. That includes over 115 faults and 248 fault lines (some faults have multiple fault lines). Faults classified as "Quaternary" (15,000 to 1,600,000 years) by the USGS aren't shown. Tapping a fault will display its name. The locations of recent or historic earthquakes are not shown. Many other apps do that. This app simply shows the approximate locations of faults in California and distances to your current location or a location you specify. It is intended for people that live in California. IOS 16.0 or later and an active WiFi or cellular service (preferably both) is required. It should work on iPhones and iPads released in the last 6 to 7 years. You’ll find more details at https:www.calfaults.com. Feel free to contact us at calfaults@gmail.com. ## Key features - Interactive map of California faults - Locate faults by current or specified position - Displays distances to faults - Shows fault names - Filters for Bay Area, Southern California, and statewide faults - Includes historic and active faults ## Chart rankings - #68 in Top Paid · Weather (US App Store) ## Recent user reviews (5 of 5) All indexed reviews: https://appshunter.io/ios/app/california-earthquake-faults/id497261775/reviews.md ### 4/5 — Finally! *2012-09-30* Great California fault map without having to spend lots of time web-crawling and trying to navigate the convoluted USGS sites. Would like to have more backup data, though, such as type of fault, history of related earthquakes, and brief, non-scientific narrative of relative likelihood for future EQ's. if you can add hazard overlays (e.g. Liquefaction zones, tsunami threat, unstable soils, etc.), I know MANY of us living in the zones will be quick to subscribe and tell our friends and neighbors. This is a good start - keep up the good work! ### 4/5 — Perfect tool for a realtor. *2012-04-05* Pretty basic information every California resident should know. Wish it covered more than just California. ### 5/5 — Informative! *2012-03-11* Nicely laid out and clear with a lot of data . My kids love finding the nearest fault line while we are driving around. ### 5/5 — California Earthquakes: great info *2012-03-05* App works well. Hope it can be expanded to other areas. Very informative. I use it as I travel. ### 5/5 — Very informative and easy to use! *2012-02-21* In California everyone wants to know how far they and their relatives are from an earthquake fault. Will also be helpful when we feel the next quake. ## Frequently asked questions about California Earthquake Faults ### What is the price of California Earthquake Faults? California Earthquake Faults is a paid application, priced at $1.99. This one-time purchase grants you access to all its features without recurring fees. ### Does California Earthquake Faults show recent earthquake activity? No, California Earthquake Faults specifically focuses on displaying the approximate locations of faults and their distances. It does not show the locations of recent or historic earthquakes, differentiating it from other apps. ### What types of faults are included in California Earthquake Faults? The app displays the vast majority of California faults classified by the USGS as "Historic" (active in the last 150 years) and "Holocene to Latest Pleistocene" (active in the last 15,000 years). Faults classified as "Quaternary" are not shown. ### How often is California Earthquake Faults updated? The latest version of California Earthquake Faults is 4.1.0, last updated on May 26, 2026. While the update date appears to be in the future, this indicates a commitment to ongoing development and maintenance. ### What devices are compatible with California Earthquake Faults? California Earthquake Faults requires iOS 16.0 or later and works on iPhones and iPads released in the last 6 to 7 years. An active WiFi or cellular service is also necessary for its functionality. ### What is the user rating for California Earthquake Faults? California Earthquake Faults has a rating of 3.0 stars based on 2 user ratings. This suggests a mixed reception from its current user base. ### What is the age rating for California Earthquake Faults? California Earthquake Faults has an age rating of 4+. This indicates that the content is considered suitable for children aged 4 and above. ### Can I use California Earthquake Faults offline? An active WiFi or cellular service is required for California Earthquake Faults to function. Therefore, it is not designed for offline use. ## Version history (last 3 releases) ### 4.1.0 — 2026-05-26 - Simplified user interface - Improved exception handling - Miscellaneous bug fixes ### 4.0.1 — 2026-04-17 Updated for latest iOS, iPhones and iPads. Minor refinements and bug fixes. ### 3.03 — 2019-12-16 User interface is more consistent across tabs. ## More apps by Demosthenes Pasadis - [U.S. Earthquake Faults](https://appshunter.io/ios/app/us-earthquake-faults/id1152038596) All apps by Demosthenes Pasadis: https://appshunter.io/developer/1531387070 --- *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 2026-09-01.*