Comparison

Unit Ⅽonverter vs US Unit Converter

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

Head to head
About

Unit Ⅽonverter

Easily convert between over 1600 units of measurement across 75 categories, including custom units and complex calculations. Supports offline mode and offers a convenient history of your conversions.

Highlights
  • Convert over 1600 units in 75 categories
  • Supports custom units and combinations
  • Calculator for expression input
  • View conversion histories
  • Add favorite units
  • Offline mode
  • Copy and share results
Read full description

Unit Converter enables any user to quickly convert between any units of measurement—including custom units and combinations of units—in just a few simple steps. Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors. Unit Converter application provides a conversion calculator for all types of measurement units. Features list - Convert all units simultaneously. - Calculator for expression input. - View conversion histories. - Add conversion to the favorite units. - Support offline mode, work without internet whenever and wherever. - All in one tool offering with multiple unit conversions. - Swap unit by pressing button on the interface. - Copying and Sharing the conversation results. Conversion with more than 1600 units of the measurements in 75 categories. - Common converters: Length, Currency (more than 150 world currencies), Temperature, Time, Weight, Fuel, Area, Volume, Angle, Pressure, Energy&Power, Speed, Force, Number, Data storage. - Engineering converters: Velocity angular, Acceleration, Acceleration angular, Density, Specific volume, Moment of Inertia, Moment of Force, Torque. - Hear converters: Fuel efficiency mass, Fuel efficiency volume, temperature interval, thermal expansion, Thermal resistance, Thermal conductivity, Specific heat capacity, Heat density, Heat flux density, Heat transfer coefficient. - Fluids converters: Flow, Flow mass, Flow molar, Mass Flux density, Concentration Molar, Concentration solution, Viscosity dynamic, Surface tension, Permeability. - Light converters: Luminance, Luminous Intensity, Illumination, Digital Image Resolution, Frequency wavelength. - Electricity converters: Charge, Linear charge density, surface charge density, volume charge density, ... - Magnetism converters: Magnetomotive Force, Magnetic field strength, Magnetic Flux, Magnetic Flux Density. - Radiology converters: Radiation, Radiation activity, Radiation exposure, Radiation absorbed. - Other converters: Prefixes, data transfer, sound, typography, Volume lumber. #UNITCONVERTER offers auto-renewing subscription option: $1.99 per month By subscribing you get all-purpose converters, live exchange rates and no advertising. Payment will be charged to iTunes Account at confirmation of purchase. Your subscription will automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. Your account will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed and auto-renewal may be turned off by going to the Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable. Terms of Use: https://tos.vidanimate.co Privacy Policy: https://privacy.vidanimate.co

About

US Unit Converter

Easily convert between US customary units and the International System of Units for various measurements like length, weight, area, volume, and temperature. Access conversion history and remove ads with a premium upgrade.

Highlights
  • Length conversion
  • Weight conversion
  • Area conversion
  • Liquid volume conversion
  • Temperature conversion
  • Conversion history
  • Ad-free option
Features
Read full description

"US Unit Converter" converts the units of length, weight, area, liquid volume, and temperature used in the United States into the International System of Units such as meters and kilograms. Select the category of the unit you want to convert at the top of the screen, enter the value, and you can convert immediately. The units that can be converted are as follows. [Unit of length] Meters [m], centimeters [cm], millimeters [mm], kilometers [km], inches [in], feet [ft], yards [yd], miles [mile] [Unit of weight] Kilogram [kg], gram [g], pound [lb], ounce [oz] [Unit of area] Square meters [m2], Are [a], hectares [ha], square kilometers [km2], square feet [ft2], square inches [in2], square miles [mi2], acres [acre], square yards [yd2] [Unit of liquid volume] Litre [L], milliliter [ml], fluid ounce [fl oz], cup [cup], pint [pt], quart [qt], gallon [gal] [Temperature unit] Celsius [℃], Fahrenheit [℉] In the free version, you can see only the previous data in the conversion history. If you want to see 100 historical data or hide ads, please consider purchasing the premium version in the app. ---------------------- Terms of Service and Privacy Policy: https://akikibai-labolatory.jimdofree.com/privacy-policy/

Screenshots

Unit Ⅽonverter4 screens
US Unit Converter4 screens

Verdict

The call

The clearest difference is update cadence: Unit Ⅽonverter at every 3 weeks against US Unit Converter's every 6 months. US Unit Converter's advantage is review sentiment (44% vs 25%) and iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and monetization model 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 2 in-app purchases, starting at $1.99 per month and US Unit Converter sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Unit Ⅽonverter ships an update every 3 weeks, US Unit Converter every 6 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

Scorecard3 real differences · 7 level
Unit Ⅽonverter versus US Unit Converter: the parameters behind the verdict, then further details
ParameterUnit ⅭonverterUS Unit Converter
PriceFreeFree
Rating—4.8 (110 ratings) — better
Positive reviews25.0% of reviews44.4% of reviews — better
Number of ratings—110 — better
Update frequencyEvery 3 weeks — betterEvery 6 months
AdsYesYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.015.6 — better
Further details — not scored
Size8 MB6 MB
Age rating4+4+
DeveloperPolymath Company LimitedKei Suefuji

Customer experience

Unit Ⅽonverter

Written reviews4 reviews
Positive25.0%
Neutral25.0%
Negative50.0%

US Unit Converter

All ratings109 ratings
Positive95.4%
Neutral0.9%
Negative3.7%
Written reviews9 reviews
Positive44.4%
Neutral11.1%
Negative44.4%

In-app purchases

2 purchases

Unit Ⅽonverter

Subscriptions1
  • UnitConverterPremiumMonthly$1.991 Month
One-time1
  • UnitConverterPremiumLifeTime$33.99
1 purchases

US Unit Converter

One-time1
  • PREMIUM$3.99

Questions

Is Unit Ⅽonverter free?
Unit Ⅽonverter is free to download, with in-app purchases available.
Is US Unit Converter free?
US Unit Converter is free to download, with in-app purchases available.
Do Unit Ⅽonverter or US Unit Converter have ads?
Both Unit Ⅽonverter and US Unit Converter show ads.
Which is updated more often, Unit Ⅽonverter or US Unit Converter?
Unit Ⅽonverter ships an update every 3 weeks, and US Unit Converter every 6 months. Most recently, Unit Ⅽonverter was updated on November 3, 2026 and US Unit Converter on November 7, 2026.

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