240+ iOS apps curated and reviewed
The best petroleum dictionary terms definitions apps on iPhone average 3.7★ across 240+ 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 | 3.6★ (5) | No | No | May 2026 | |
| 2 |  | Free | 4.4★ (9) | Yes | Yes | May 2026 | |
| 3 |  | Free | 4.8★ (15K) | Yes | Yes | Oct 2026 | |
| 4 |  | $2.99 | 4.7★ (241) | No | No | Aug 2026 | |
| 5 |  | Free | 4.3★ (23) | No | No | Sep 2026 | |
| 6 |  | Free | 1.3★ (7) | No | No | May 2026 | |
| 7 |  | Free | 3.0★ (1) | Yes | No | Jul 2026 | |
| 8 |  | $3.99 | 4.7★ (59) | No | No | Aug 2026 |
Instantly decode petroleum terms with this free offline dictionary. Perfect for students and professionals, it offers a vast encyclopedia of jargon with search, bookmarking, and audio pronunciation features.
This app provides a comprehensive offline dictionary for petroleum engineering terms, including definitions, equations, formulas, and quizzes. It offers features like speech-to-text, text-to-speech, and the ability to save favorites and view search history. It's designed for students and professionals in the oil and gas industry.
Access a comprehensive dictionary, thesaurus, and translation tool with millions of definitions and synonyms. Explore specialty dictionaries, learn new words daily, and play word games. This app offers offline access and integrates seamlessly with other applications.
