Weather
California Earthquake Faults
View approximate California fault lines and their distance from a chosen location.
Useful for general geological orientation
Regional views and named map lines make selected faults easier to find.
Keep in mind: It excludes the older Quaternary class and earthquake-event locations; distance to a mapped fault does not predict an earthquake or certify property safety.
Inside the app
Official product images
What you can do
- Interactive fault-line map
- Nearest fault names/distances
- Bay Area/southern/state views and custom location
Good for
- California residents exploring the stated geology coverage
Consider alternatives for
- Earthquake prediction, early warning or property hazard certification
Limitations & considerations
- Captured minimum: iOS 16.6.
- It excludes the older Quaternary class and earthquake-event locations; distance to a mapped fault does not predict an earthquake or certify property safety.
Privacy & permissions
Current/custom location and map requests can reveal an address; review permissions and avoid publicly sharing a home marker.
Sources & review notes Updated Nov 12, 2026
Reviewed by iApp4Me Editorial Team. Recommendations use the linked documentation and attributed accounts; device observations are identified separately.
- US App Store developer description
Complete description, download price and compatibility metadata captured 2026-11-02.
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