248+ iOS apps curated and reviewed
The best geology dictionary apps on iPhone average 3.7★ across 248+ titles — we've ranked them by what real users actually keep on their phones. Updated August 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | Yes | May 2026 |
| 2 |  | Free | 3.4★ (5) | Yes | Yes | May 2026 |
| 3 |  | Free | 1.3★ (7) | No | No | May 2026 |
| 4 |  | Free | 1.0★ (1) | No | No | May 2026 |
| 5 |  | Free | 3.2★ (6) | No | No | May 2026 |
| 6 |  | Free | 5.0★ (6) | No | Yes | May 2026 |
| 7 |  | Free | — | No | No | May 2026 |
| 8 |  | Free | — | No | No | May 2026 |
This app serves as a comprehensive personal guide for learning geology, offering a dictionary of terms with flashcards and visual explanations. It also includes video lectures and a detailed textbook covering major geological topics.
Access a vast offline dictionary of geological terms with definitions, synonyms, and audio pronunciations. Learn about Earth sciences, save favorite words, and test your knowledge with quizzes. Share terms easily with friends.
Instantly decode geology terms with this free offline dictionary. Access a vast encyclopedia of geological vocabulary, bookmark important terms, and learn correct pronunciation with audio. Perfect for students and professionals encountering unfamiliar geological language.
Access a comprehensive offline dictionary of geological terms and words. This free application provides thousands of entries, an alphabetical listing, and a search tool, making it ideal for learning and reference without an internet connection.
Access a vast offline database of geology terms and definitions. This app offers a search function, daily words, and quizzes to enhance your understanding of geological vocabulary. Perfect for students and enthusiasts needing quick access to geological information.
Explore geology with this comprehensive dictionary app. It offers a vast collection of terms, concepts, and phenomena with visuals and expert references. An AI assistant provides instant answers, and advanced AI vision features are available via subscription for analyzing geological samples.
Explore Earth's geology through interactive lessons and trivia. Learn about volcanoes, earthquakes, and tectonic plates with a friendly science teacher. Play offline and test your knowledge in a safe, ad-free environment.
Explore the volcanic products and geological terms of Kīlauea and Mauna Loa. This educational app provides definitions for features like 'a'a and pāhoehoe lava, cinder cones, tephra, and xenolith.
Access detailed geology maps and geophysical images offline. View rock types, their ages, and additional information by interacting directly with the map. Your location is always shown, with easy re-centering functionality.
This app serves as a comprehensive field and study companion for geology enthusiasts, students, and professionals. It offers integrated geological tools for measurement, reference, and identification, supporting both academic exploration and real-world fieldwork.
This app provides audio explanations of the geology visible from your car. Explore geological features, create custom routes, and learn about earth history on the go. Offline access and adjustable audience settings enhance the learning experience.
Explore an interactive geological time scale with detailed information on each unit, including GSSP definitions and color codes. Search for terms and view GSSPs on a global map. Ideal for geologists, students, and Earth history enthusiasts.
Access detailed offline geology and terrain maps for field use. Mark locations, record trails, and overlay various data layers. Ideal for geologists, prospectors, and outdoor enthusiasts exploring Australia and New Zealand.
Organize and catalog your mineral collection with this app. Document specimens with photos and details like name, origin, size, value, and acquisition history. Access your collection offline for easy field use.
Explore London's hidden geological wonders with this interactive map. Discover diverse rock types and fossils readily accessible to the public across the city.