232+ iOS apps curated and reviewed
Out of 232+ length converter app on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.
| # | App | Price | Rating | Ads | In-App Purchases | Updated |
|---|---|---|---|---|---|---|
| 1 |  | Free | — | Yes | No | May 2026 |
| 2 |  | Free | 4.8★ (193K) | Yes | Yes | Sep 2026 |
| 3 |  | Free | — | Yes | Yes | Aug 2026 |
| 4 |  | Free | — | No | Yes | Aug 2026 |
| 5 |  | $0.99 | — | No | No | May 2026 |
| 6 |  | $2.99 | 1.5★ (6) | No | No | Aug 2026 |
| 7 |  | Free | — | Yes | No | Jun 2026 |
| 8 |  | Free was $1.99 | 4.8★ (12) | No | Yes | Aug 2026 |
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 measurements between inches, feet, yards, and miles. Supports both decimal and fractional inputs, with customizable rounding options for precise results. Share conversions and history via email.
Easily convert lengths between various units including feet, inches, meters, decimeters, centimeters, and millimeters. This tool is designed for quick and accurate conversions for a wide range of users.
Easily convert between various units of length, from micrometers to miles. Includes a built-in calculator for added convenience.
Convert lengths between modern and historical units, including ancient civilizations. Offers smart formatting, custom precision, and a favorites list for frequently used conversions. Supports iPhone, iPad, and Mac.
Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.
Easily convert between 76 measurement units across eight common types, including length, weight, temperature, and volume. Features a built-in calculator and optional currency conversion with daily exchange rate updates.
Easily convert between various units of measurement for length, weight, volume, temperature, and more. This tool simplifies calculations for everyday needs and specific applications.
This app provides a comprehensive unit and currency converter with a user-friendly interface. It offers offline functionality, supports over 30,000 unit conversions, and includes more than 160 currencies with live exchange rates. Users can save favorite conversions and get precise results.
This app offers over 30 unit converters for science, engineering, and everyday use. It features advanced options like adjustable rounding, smart search, and calculation history, with customizable themes and an iPad-optimized interface.
Easily convert between various units of measurement across 15 categories, including length, mass, volume, speed, and temperature. Offers a premium subscription for advanced features and an ad-free experience.
Easily convert measurements between inches and millimeters. This straightforward tool simplifies length conversions for everyday use.