247+ iOS apps curated and reviewed
The best geology dictionary apps on iPhone average 3.8★ across 247+ titles — we've ranked them by what real users actually keep on their phones. Updated October 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 | Oct 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 | Oct 2026 | |
| 7 |  | Free | 4.4★ (94) | No | Yes | Sep 2026 | |
| 8 |  | Free | 4.5★ (15) | No | No | Jul 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.
