Comparison

Unit Converter vs Smart Unit Converter Plus

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 app provides a comprehensive suite of tools for unit and currency conversions, along with various calculators and scientific constants. It offers real-time exchange rates, works offline, and supports a wide range of categories. Enjoy a user-friendly experience with features like dark mode and no conversion limits.

Highlights
  • Unit conversions
  • Currency conversions
  • Real-time exchange rates
  • Offline functionality
  • Variety of calculators
  • Scientific constants
  • Dark mode
Features
Read full description

OmniConvert is a powerful unit and currency converter focused on functionality, usability, and speed. It is completely free, supports a wide variety of conversion categories, and works offline. Exchange rates are updated in real-time (when connected to the internet) and all 166 major world currencies are supported. There are no conversion limits or size restrictions, and it even comes with a dark mode! OmniConvert offers an additional selection of useful calculators (e.g. salary, gratuity, baking) along with compilations of common scientific constants relevant to fields like physics and chemistry. Conversions: Currency, Volume, Mass, Temperature, Time, Length, Speed, Gas, Area, Energy, Pressure, Torque, Data, Angle, Frequency, Planetary Weight Calculators: Salary, Tip, Baking, Percentage, Mortgage, Auto Loan, BMI Constants: Chemistry, Physics, Density, Unit Prefix, Mathematics, Medicine, Astrophysics. Omniconvert is optimized for iPhone X, 11, 12, 13, 14, 15, and 16 as well as the Pro and Max variants of these devices.

About

Smart Unit Converter Plus

Features
Read full description

Smart Unit Converter Plus Smart Unit Converter Plus is a powerful and easy-to-use unit conversion app designed for everyday life, education, engineering, science, and professional work. Convert instantly between thousands of units across more than 90 categories, including length, weight, temperature, area, volume, speed, pressure, energy, electrical units, data storage, currency, cooking, typography, and many more. Features • Supports 90+ conversion categories • Thousands of units with accurate calculations • Real-time conversion results • Metric and Imperial systems • Currency converter • Scientific and engineering units • Favorites and recent conversions • Works completely offline • Clean and modern interface • Optimized for both iPhone and iPad Whether you're a student, engineer, traveler, technician, or simply need quick conversions, Smart Unit Converter Plus provides fast and reliable results anytime.

Screenshots

Unit Converter4 screens
Smart Unit Converter Plus3 screens

Verdict

The call

The clearest difference is in-app purchases: Smart Unit Converter Plus at none against Unit Converter's 1. Smart Unit Converter Plus also leads on ads (none vs shown) and device support (3 vs 1). On price 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. Unit Converter sells 1 one-off in-app purchase. Smart Unit Converter Plus asks for nothing beyond the download.

Scorecard4 real differences · 6 level
Unit Converter versus Smart Unit Converter Plus: the parameters behind the verdict, then further details
ParameterUnit ConverterSmart Unit Converter Plus
PriceFreeFree
Rating5.0 (42 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings42 — better—
Update frequencyWeekly—
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS17.015.0 — better
Further details — not scored
Size35 MB22 MB
Age rating4+4+
DeveloperJonathan Chen海彬 唐

In-app purchases

1 purchases

Unit Converter

One-time1
  • OmniConvert Pro$2.99
None

Smart Unit Converter Plus

No in-app purchases

Questions

Is Unit Converter free?
Unit Converter is free to download, with in-app purchases available.
Is Smart Unit Converter Plus free?
Smart Unit Converter Plus is free to download, with no in-app purchases.
Do Unit Converter or Smart Unit Converter Plus have ads?
Unit Converter shows ads; Smart Unit Converter Plus does not.

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