23+ iOS apps curated and reviewed
Mike Holt's Electrical Toolbox is the household name in mike holt, but it's far from the only option. We track 23+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.6★ (197) | No | No | Aug 2026 | |
| 2 |  | Free | 4.8★ (9.2K) | No | No | Sep 2026 | |
| 3 |  | Free | 4.5★ (746) | No | No | Sep 2026 | |
| 4 |  | Free | 3.5★ (16) | No | No | May 2026 | |
| 5 |  | Free | 4.6★ (1.5K) | No | No | Sep 2026 | |
| 6 |  | Free | 4.7★ (456) | No | Yes | Sep 2026 | |
| 7 |  | Free | 4.7★ (165) | No | Yes | Jul 2026 | |
| 8 |  | Free | 4.4★ (278) | Yes | Yes | Aug 2026 |
This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.
Test your electrical knowledge daily with a new question based on the US electrical code. Perfect for apprentices, journeymen, and masters seeking to learn or refresh their understanding of electrical concepts and regulations.
This tool assists electricians, engineers, and contractors in determining the correct conduit size based on NEC guidelines. It calculates conduit fill percentages and jam probability, saving time compared to manual calculations.
