68+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our watt's law list covers 68+ iPhone apps updated through June 2026. Compare ratings, prices, and screenshots in one place.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.4★ (26) | No | No | Jul 2026 | |
| 2 |  | Free | 4.7★ (52) | Yes | Yes | Aug 2026 | |
| 3 |  | Free | 4.3★ (7) | Yes | No | Aug 2026 | |
| 4 |  | Free | 5.0★ (2) | No | Yes | Aug 2026 | |
| 5 |  | Free | 4.7★ (165) | No | Yes | Jul 2026 | |
| 6 |  | $2.99 | 3.5★ (4) | No | No | Aug 2026 | |
| 7 |  | Free | 4.4★ (86K) | No | No | Sep 2026 | |
| 8 |  | $1.99 | 4.0★ (3) | No | No | Aug 2026 |
This app calculates electrical parameters based on Ohm's and power laws. Input any two values (voltage, current, resistance, or power) and the app will automatically compute the remaining two. It allows for continuous "what-if" scenarios by locking one parameter and recalculating others.
This utility app quickly calculates voltage, current, resistance, and power using Ohm's and Watt's laws. It's designed for electricians, engineers, and students, offering instant, accurate results with a simple interface. Works offline and is ideal for field calculations or exam preparation.
This utility app calculates voltage, current, resistance, and power using Ohm's Law. Simply input any two values, and the app will compute the remaining two, providing a comprehensive tool for electrical calculations.
