186+ iOS apps curated and reviewed
Every iPhone needs a few good power converter apps. We benchmark 186+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | — | No | Jul 2026 |
| 2 |  | $1.99 | 3.0★ (2) | No | No | May 2026 |
| 3 |  | Free | 5.0★ (1) | No | No | May 2026 |
| 4 |  | Free | — | No | Yes | Jul 2026 |
| 5 |  | Free | 4.7★ (15K) | Yes | Yes | Jul 2026 |
| 6 |  | $1.99 | — | No | No | Jun 2026 |
| 7 |  | Free | 4.6★ (16K) | No | Yes | Jul 2026 |
| 8 |  | Free was $0.99 | 4.6★ (193) | No | No | May 2026 |
Quickly convert between various units of power, including watts, kilowatts, megawatts, gigawatts, milliwatts, and microwatts. Ideal for builders, electricians, and physicists needing rapid unit conversions.
Easily calculate electrical power, amperage, or voltage. This tool simplifies electrical calculations for users needing to find one value when the other two are known.
This app is a versatile unit and currency converter with a user-friendly interface. It supports a wide range of conversion categories, including real-world and crypto currencies, with automatic exchange rate updates. Customize your experience with design options, dark mode, and adjustable home screen layouts.
This app offers a powerful and user-friendly unit converter with 16 categories, including currency, length, and temperature. It allows for custom unit lists and provides live exchange rate updates for 148 currencies. Unlock all features with a one-time in-app purchase.
This app provides a powerful and intuitive way to convert between a wide range of units, including length, weight, temperature, and more. It offers simultaneous conversion of multiple units and customizable options for a personalized experience. Get instant, accurate results for all your conversion needs.
Easily convert PowerPoint files to PDF and PDF documents to PPT or PPTX. This user-friendly tool offers high-quality conversions for various file sizes, making document management efficient.
Easily convert over 160 currencies and 350 physical units with real-time updates and offline capabilities. Create a favorites list for quick access to frequently used conversions and enjoy geo-based currency options. An ad-free version is available for purchase.
Easily convert currencies with real-time rates for over 150 world currencies, precious metals, and Bitcoin. Track historical trends, set currency alerts, and manage transactions with an ad-free experience. Optimized for travel and everyday use.
This app offers a comprehensive unit and currency conversion tool with a visually appealing interface and extensive unit options. It supports standard and non-standard units, compound conversions, and fraction input, making it versatile for various needs.
Easily convert between a wide range of units across 20 categories, including length, weight, temperature, and more. Features live currency updates for 155 world currencies, refreshed daily. Designed for simplicity and visual appeal.
Easily convert between various units and currencies with a simple, intuitive interface. Features live currency updates for 155 world currencies, refreshed every 15 minutes. Optimized for a wide range of Apple devices, including iPads with Split View support.
This app offers a comprehensive unit and currency converter with over 1500 units across 65 categories. It features advanced search, customization, and two conversion modes for convenience, performing calculations as you type.
This app offers a comprehensive unit conversion experience with a vast database of over 1000 units across 50 categories. It supports mixed units, custom unit creation, and provides a unique, visually appealing interface for all your conversion needs.
This app offers a fast and user-friendly way to convert units and currencies. Customize your conversion lists and get instant results as you type, with support for over 350 units and 160 currencies. It also includes a built-in calculator and offline currency data.
This app offers a comprehensive unit and currency converter with a vast array of categories and calculators for everyday needs. It allows users to customize templates, download shared ones, and provides automatic exchange rate updates for 167 world currencies.
Easily convert over 700 units across 30 categories with this powerful tool. It offers a user-friendly interface, dark mode support, and a backspace key for quick corrections. Save time on all your measurement conversion needs.
Quickly convert between thousands of units with an intelligent search and autocomplete feature. This app offers a streamlined interface, an integrated calculator, and the ability to save favorite conversions. It supports over 6,400 units across 51 categories, making it a comprehensive tool for all your conversion needs.