App Store
Version 4.1.0 · 2026-05-26
- Simplified user interface - Improved exception handling - Miscellaneous bug fixes
Too little checked to say Store information only. We haven’t analysed this app or read its reviews yet.
Not yet tested.
The store currently lists version 4.1.0, updated 2026-05-26.








Store screenshots supplied by the developer.
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.…
From the developer’s store description.
For developers and the curious
The evidence, sources, measurements and versions behind every label above.
No review analysis published for this app.
“Not assessed” means we could not measure it. It is never a zero and never a pass.
No package has been scanned for this app, so nothing is published about what it ships. That is an absence of evidence, not a finding.
Supporting measurements: not a complete list of possible harms or positives. Measurement vocabulary 1.4 · how these are measured
Not yet tested. No analysis has been run for this app, so there is no version or date to report.
Each store’s release notes, as the developer wrote them. They are the developer’s words, not ours.
- Simplified user interface - Improved exception handling - Miscellaneous bug fixes
california-earthquake-faultsWhat the stores publish. Store ratings are the stores’ numbers, not Appworthy’s, and are never averaged across stores.
No itemized purchase list is available for this listing.
Not yet tested. No analysis has been published for this app, so there is no method to describe for it yet. A missing label is not a clean bill of health: it means nothing has been read, not that nothing is wrong.
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