206+ iOS apps curated and reviewed
Out of 206+ dioptase apps on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | No | May 2026 | |
| 2 |  | Free | 2.0★ (1) | No | No | May 2026 | |
| 3 |  | Free | 4.7★ (79K) | No | Yes | Sep 2026 | |
| 4 |  | Free | — | No | No | May 2026 | |
| 5 |  | Free | 4.9★ (143K) | No | No | Sep 2026 | |
| 6 |  | Free | 4.6★ (2.6K) | Yes | Yes | Sep 2026 | |
| 7 |  | Free | 4.4★ (3.1K) | No | Yes | Sep 2026 | |
| 8 |  | Free | 4.5★ (2.9K) | No | No | Sep 2026 |
This app provides essential tools for radio and satellite communication engineers. It includes calculators and analysis features for antenna parameters, frequency calculations, link budgets, and modem performance. It also offers miscellaneous utilities for RF engineering tasks.
This utility app assists radio engineers with common calculations. It allows for adding and subtracting dB values and converting various radio engineering metrics like noise factor and return loss.
Instantly identify rocks, minerals, and gemstones by taking a photo. Access a comprehensive encyclopedia with detailed information on each stone, learn to distinguish real from fake gems, and explore their properties. The app also includes a metal detector and expert consultation.
