250+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our NEC calculator list covers 250+ iPhone apps updated through September 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 5.0★ (1) | No | Yes | Sep 2026 | |
| 2 |  | Free | 5.0★ (3) | No | Yes | Jun 2026 | |
| 3 |  | Free | — | No | Yes | Jul 2026 | |
| 4 |  | Free | 4.6★ (36K) | Yes | Yes | Sep 2026 | |
| 5 |  | Free | 4.9★ (409K) | Yes | No | Sep 2026 | |
| 6 |  | $9.99 | — | No | No | Aug 2026 | |
| 7 |  | Free | 5.0★ (2) | No | Yes | Sep 2026 | |
| 8 |  | Free | 4.2★ (1.4K) | No | No | Sep 2026 |
This app provides instant, NEC-compliant electrical calculations for voltage drop, wire size, conduit fill, and ampacity. It offers offline access to essential electrical formulas and code references, helping professionals and DIYers work efficiently and accurately.
This app provides professional NEC electrical calculations for electricians and engineers. It features ampacity, voltage drop, and conduit fill calculations, with a unique 2D visualizer to see conductor layouts. Generate inspector-ready PDF reports for documentation and record-keeping.
