249+ iOS apps curated and reviewed
Looking for free instrumentation apps? 17 of our 249+ tracked titles are free to download — no subscription, no trial. The rest are premium picks worth paying for.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (5) | No | No | Oct 2026 | |
| 2 |  | Free | 4.3★ (6) | No | Yes | Oct 2026 | |
| 3 |  | Free | 4.8★ (1K) | No | Yes | Nov 2026 | |
| 4 |  | Free | 1.0★ (1) | No | No | Oct 2026 | |
| 5 |  | Free | — | No | Yes | Oct 2026 | |
| 6 |  | Free | 3.0★ (2) | No | Yes | Oct 2026 | |
| 7 |  | $1.99 | — | No | No | Nov 2026 | |
| 8 |  | Free | 4.7★ (1.4K) | No | Yes | Nov 2026 |
This app provides a centralized hub for instrument calibration resources. It offers instant answers to process instrumentation questions through an integrated AI agent, streamlining calibration workflows.
Master the art of reading and interpreting Piping and Instrumentation Diagrams (P&IDs) with this engaging trivia quiz. Test your knowledge of P&ID symbols and their applications through interactive quizzes with detailed explanations and real-world examples. Learn at your own pace with multiple difficulty levels and offline mode.
This app provides electricians, students, and installers with essential electrical theory, interactive diagrams, and practical calculators. It includes a community forum for users to share knowledge and seek advice, all accessible offline without ads or subscriptions.
