250+ iOS apps curated and reviewed
Fault Current Calculator is the household name in fault current calculator, but it's far from the only option. We track 250+ alternatives and competitors on iOS — many free, many higher-rated than you'd expect.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 3.1★ (23) | No | Yes | Aug 2026 | |
| 2 |  | Free | — | No | Yes | Jul 2026 | |
| 3 |  | Free was $0.99 | 1.0★ (2) | Yes | No | Aug 2026 | |
| 4 |  | Free | 4.2★ (5) | No | Yes | May 2026 | |
| 5 |  | Free | 4.6★ (574) | Yes | Yes | Sep 2026 | |
| 6 |  | Free | 4.6★ (197) | No | No | Aug 2026 | |
| 7 |  | Free | — | Yes | Yes | May 2026 | |
| 8 |  | $7.99 | — | No | No | Jul 2026 |
This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.
This app calculates prospective fault current (PFC) in kA and Amps for single and three-phase circuits. It allows users to input any two values (voltage, earth loop impedance, or PFC) to determine the third, aiding in selecting appropriate circuit breaker ratings.
