4+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our engine performance calculator list covers 4+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.7★ (21) | No | Yes | Oct 2026 | |
| 2 |  | Free | 5.0★ (1) | No | No | Oct 2026 | |
| 3 |  | $24.99 | — | No | No | Jul 2026 | |
| 4 |  | $2.99 | — | — | No | Oct 2026 |
This app helps helicopter pilots, mechanics, and operators monitor engine performance. It calculates power checks, records engine data, and tracks trends for proactive maintenance. Compatible with various helicopter models and configurations.
Access a comprehensive mobile database for automotive professionals and tuners. Quickly find ECUs for any vehicle, view performance data, and look up error codes. Supports multiple languages and includes a performance calculator.
