# Folds and Faults — Understanding Earth's Geology > Illustrated guide to geological folds and faults with animations and photos. (iPhone/iPad app by Danny Pilkenton.) - Source: https://appshunter.io/ios/app/folds-and-faults/id425380687 (this page in markdown: same URL + `.md`) - Developer: [Danny Pilkenton](https://appshunter.io/developer/1445079601) - Category: Education, Reference - Price: $0.99 - Rating: 5.00/5 from 2 App Store ratings · 3 written reviews indexed - Age rating: 4+ - Requires: iOS 15.2 · 38 MB - Languages: English - Released: 2011-03-17 - Data updated: 2026-06-10 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/folds-and-faults/id425380687/reviews.md ## What is Folds and Faults? Folds and Faults provides an illustrated overview of two significant topics in geology: folds and faults. Understanding folds and faults helps to explain how mountains form, how layers of rock change shape over time, and the underlying cause of earthquakes. This app contains illustrations, animations, and photos by Dennis Tasa as well as annotated photos by Michael Collier and Ed Tarbuck. Animations show how folds and faults change the position and angle of rock layers. Illustrations and annotated photographs help to illustrate these concepts and aid in the identification of folds and faults in the field. Contents: FOLDS Anticlines Synclines Monoclines Overturned Folds FAULTS Normal Faults Reverse Faults Thrust Faults Strike-slip Faults ## Key features - Illustrated overview of folds and faults - Animations showing rock layer changes - Photos by renowned geologists - Field identification aids - Covers anticlines, synclines, monoclines - Explains normal, reverse, thrust, strike-slip faults ## Recent user reviews (3 of 3) All indexed reviews: https://appshunter.io/ios/app/folds-and-faults/id425380687/reviews.md ### 5/5 — This app is great, y’all should make more. *2021-10-07, version 2.0* I love this app but wish it had more, y’all should at least add Unconformities like Angular Disconformities, Nonconformities, Disconformities, and also the basic principles of Geology like Superposition, Lateral Continuity, Faunal succession, and maybe history, intrusions, exclusions, etc I always wonder why apps what entire video games but no larger, full educational apps like you could get on CD software in the 90s. Y’all should do a fuller, larger app with this stuff, it has potential but apparently of society values nice games over education ### 5/5 — Difficult Concepts Demystified! *2018-09-06, version 2.0* Folds and faults are a 3D concept over Deep Time that is beyond the limits of a 2D textbook. Now you can carry a set of clear explanations and demonstrations into the field. Combine this with other Tama apps and Geology becomes a dynamic subject! ### 1/5 — TASA apps Folds and Faults and Geotimescale fail to open *2011-10-17, version 1.0* TASA apps Folds and Faults and geotimescale fail to activate on my iTouch 4 using Operating sytstem iOS5, October 16, 2011. **Developer response:** Please upgrade to the latest version. ## Frequently asked questions about Folds and Faults ### What geological concepts does Folds and Faults cover? Folds and Faults provides an illustrated overview of anticlines, synclines, monoclines, overturned folds, normal faults, reverse faults, thrust faults, and strike-slip faults. It explains how these phenomena shape mountains and cause earthquakes. ### What kind of visual aids are included in Folds and Faults? The app features detailed illustrations, animations that demonstrate changes in rock layers, and photographs by notable geologists like Dennis Tasa, Michael Collier, and Ed Tarbuck. ### How does Folds and Faults help with field identification? The app includes annotated photographs that aid users in identifying folds and faults in real-world geological settings. This makes it a useful tool for both learning and practical application. ### Is Folds and Faults available on Android devices? Based on the provided data, Folds and Faults is supported on iPhone, iPad, and iPod. Information regarding Android compatibility is not available. ### How often is Folds and Faults updated? The latest version of Folds and Faults is 2.1, which was last updated on July 23, 2022. This indicates a moderate update frequency for the application. ### What is the price of Folds and Faults? Folds and Faults is a paid application, available for $0.99. This one-time purchase grants access to all its educational content. ### What is the age rating for Folds and Faults? Folds and Faults has an age rating of 4+, making it suitable for a wide range of users, including younger learners interested in geology. ### What do users like about Folds and Faults? With a rating of 5.0 stars from 2 ratings, users appear to be highly satisfied with Folds and Faults. The detailed illustrations and clear explanations likely contribute to this positive sentiment. ## Version history (last 1 release) ### 2.1 — 2022-07-23 Updated for iOS 15. Fixed pop-up layout issues on some devices. Tweaked other minor layout issues. Allows your music to continue. 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*