Comparison

Unit Converter vs Smart Unit Conversion

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Unit Converter

This tool provides fast and accurate conversions across 14 common physical unit categories. It supports metric, imperial, and traditional Chinese units, with customizable display styles for personalized use. Ideal for everyday and professional conversion needs.

Highlights
  • 14 unit categories
  • Metric, imperial, and Chinese units
  • Customizable display styles
  • Accurate conversions
  • Supports length, area, volume, mass, temperature, and more
Features
Read full description

Unit Converter is a powerful tool for fast and accurate conversions between various units. It handles both everyday and professional units with ease. Using advanced algorithms, it ensures precise results and offers customizable display styles to suit user needs. *** Features *** ► Supports Multiple Unit Categories Unit Converter covers 14 commonly used physical unit categories and supports multiple unit systems, including metric, imperial, and Chinese traditional units, catering to conversion needs in various scenarios. Supported categories include: * Length (e.g., meters, feet, inches) * Area (e.g., square meters, square feet, mu) * Volume (e.g., liters, gallons, cubic meters) * Mass (e.g., kilograms, pounds, ounces) * Temperature (e.g., Celsius, Fahrenheit, Kelvin) * Pressure (e.g., pascals, atmospheres, millimeters of mercury) * Power (e.g., watts, horsepower, kilowatts) * Energy (e.g., joules, calories, kilowatt-hours) * Density (e.g., kilograms per cubic meter, pounds per cubic foot) * Force (e.g., newtons, pound-force) * Time (e.g., seconds, minutes, hours) * Speed (e.g., meters per second, kilometers per hour, miles per hour) * Data Storage (e.g., bytes, kilobytes, megabytes) * Angle (e.g., degrees, radians, gradians) ► Customizable Unit Display Styles To meet users' personalized needs, Unit Converter offers three different unit display styles, allowing users to freely choose based on their preferences: * Full Display (e.g., meters/second (m/s)) * Simplified Display (e.g., meters/second) * Symbol Display (e.g., m/s) ► Contact Us * Email: ceo@noadit.com

About

Smart Unit Conversion

Features
Read full description

This is a smart unit convertor that: 1. Support 21 languages and the Local Units 2. You can Customize the Sequence of Units 3. European number format supported Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Unit Converter4 screens
Smart Unit Conversion4 screens

Verdict

The call

The clearest difference is in-app purchases: Unit Converter at none against Smart Unit Conversion's 1. Unit Converter also leads on update cadence (every 5 weeks vs every 15 months). Smart Unit Conversion's advantage is iOS requirement (13.4 vs 17.0). On price, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Smart Unit Conversion sells 1 in-app purchase, starting at $1.99 per year. Unit Converter asks for nothing beyond the download.

UpkeepUpdate frequency

Unit Converter ships an update every 5 weeks, Smart Unit Conversion every 15 months. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

Scorecard3 real differences · 7 level
Unit Converter versus Smart Unit Conversion: the parameters behind the verdict, then further details
ParameterUnit ConverterSmart Unit Conversion
PriceFreeFree
Rating5.0 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 5 weeks — betterEvery 15 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.013.4 — better
Further details — not scored
Size10 MB41 MB
Age rating4+17+
DeveloperNoadit, Inc.Yui Lau

In-app purchases

None

Unit Converter

No in-app purchases

1 purchases

Smart Unit Conversion

Subscriptions1
  • 1 Year$1.991 Year

Questions

Is Unit Converter free?
Unit Converter is free to download, with no in-app purchases.
Is Smart Unit Conversion free?
Smart Unit Conversion is free to download, with in-app purchases available.
Do Unit Converter or Smart Unit Conversion have ads?
Both Unit Converter and Smart Unit Conversion show ads.
Which is updated more often, Unit Converter or Smart Unit Conversion?
Unit Converter ships an update every 5 weeks, and Smart Unit Conversion every 15 months. Most recently, Unit Converter was updated on October 30, 2026 and Smart Unit Conversion on October 27, 2026.

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