Search app
CSR Racing 2

UnitConverter Pro

Utilities & Productivity
Last Update
Oct 09, 2017
View in store

Store Performance Index


Store Performance Index shows overall performance of your app on app stores. It is based on combined ASO & reviews metrics.

See more data

Ratings & Reviews performance for UnitConverter Pro

Ratings & Reviews performance provides an overview of what users think of your app. Here are the key metrics to help you identify how your app is rated by users and how successful is your review management strategy.

Number of reviews,


Avg rating,



3138 chars

"UnitConverter Pro" is the best and most sophisticated unit converter for iOS. It covers 649 units from 56 categories used by various users from students to engineers in their daily life or scientific/engineering calculation. Multiple units like feet + inch are also supported.<br><br>◆◆ Simple and Speedy User Interface ◆◆<br>Only two taps to get a required unit conversion table! (1) Tap desired unit category in category list and (2) tap value field of any unit you want to convert from. Immediately, converted values are displayed for all the other units based on "1.0" of the unit you tapped.<br><br>When you want to input arbitrary figure, tap the value field one more time to display a numerical keypad, which is specialized for input numbers including exponential expression.<br><br>◆◆ Functional digital display ◆◆<br>Converted values are rounded with user-specified decimal place and delimiting every three digits with comma. You can change decimal place from 1st to 9th any time.<br><br>◆◆ Search for a unit ◆◆<br>Copy & paste unknown units as well as numbers you find in internet or papers. UnitConverter Pro searches the unit from all the implemented units and show you a converted value immediately.<br><br>◆◆ Copy and Paste ◆◆<br>Double tapping a unit label allows you to copy converted value or to input figure by paste.<br><br>◆◆ "Favorites" category ◆◆<br>You can create your custom page in "Favorites" category by registering any units from any categories. <br><br>◆◆ Customization of category and unit list ◆◆<br>User preference screen allows you to customize the category list as well as unit list by eliminating unnecessary categories and units.<br><br>◆◆ Optional selection for Calorie/BTU definition ◆◆<br>There exists several definition commonly used for Calorie/BTU calculation. User preference screen allows you to specify the definition used in the conversion from the following list:<br> - Thermochemical Calorie<br> - International Table Calorie (14.5℃ Calorie)<br> - 15℃ Calorie<br><br><br> == Category List for Ver.2.3 ==<br>◆ Lengh-related : Length / Area / Volume / Velocity / Acceleration / Diffusion Coefficient / Volume Flow Rate / Specific Fuel Consumption<br><br>◆ Mass-related : Weight / Mass Flow Rate / Density / Specific Volume / Mass Velocity / API Gravity<br><br>◆ Power-related : Power / Surface Tension / Pressure / Viscosity / Kinetic Viscosity<br><br>◆ Heat/Energy-related : Energy / Power / Heat Flow / Heat Flux/ Heat Relieving Rate / Specific Enthalpy / Mol. Specific Enthalpy / Specific Heat / Mol. Specific Heat / Thermal Conductivity / Heat Transfer Rate / Fouling Resistance / Torque / Gas Calorific Value<br><br>◆ Light-related : Luminance / Illuminance / Luminous Flux<br><br>◆ Electromagnetic-related : Magnetic Flux / Magnetic Flux Density / Radioactivity / Exposure Dose / Electric Current / Electric Charge / Voltage / Electric Resistance / Electric Conductivity / Electrostatic Capacitance<br><br>◆ Others : Time / Temperature / Angle / Molecular Number / Mole Flow Rate / Mol. Concentration / Blood Sugar Level / Spectroscopy / Concentration / Data Size / Data Rate

 Why to reply to reviews?

User reviews affect conversion to installs and app rating. Featured and helpful reviews are the first to be noticed by users and in case of no response can affect download rate. This is why it is highly recommended to reply to them.

Aug 03, 2011

I looked through a lot of unit convert apps. This is the best by far.

Apr 15, 2012

The best conversion app by far.

Alan H...
Dec 11, 2010

This app has a huge variety of dimensions of measurements, and within each a large variety of units of measurement. The user interface is the best I've seen amongst the unit conversion programs, being both eminently usable and very attractive. Many unit converters suffer from awkwardness in switching from selecting dimensions of measurement to units of measurement, but such is not the case here - very easy and intuitive, plus the number of places shown is easily user-selectable. I haven't come across any errors. Looking at the organization of the units of measurement, the author appears to think first in SI units, then in imperial (UK) units, and lastly in US units, but as a US user I don't find much lacking other than obsolete units of measure from agricultural commerce (and if you're buying peaches by the bushel, you already know how much a bushel is). This is definitely the class act among unit converters for serious users, and is well worth 99 cents - kudos to the author. For the everyday user not needing this app's variety of units, I think Measures Lite is the best amongst the free unit converters.

Dung Ha 1234
Jul 16, 2011


Engineer wannabe
Aug 08, 2009

This does it all. The pop up keypad is perfect and has a (-/+) key for neg temps. I downloaded this with no previous reviews. I tried it and will be showing all the ME in my office. Buy it!!!!

CSR Racing 2

About UnitConverter Pro

Developed by Motohiro 大森.

UnitConverter Pro is ranking in   Utilities & Productivity

Last update was at Oct 09, 2017and the current version is 2.9.

To see all other keys and revenue click here 311325306

UnitConverter Pro have a 4a user reviews.

UnitConverter Pro was released in the App Store. It is developed by Motohiro 大森, who have also released the following apps.

UnitConverter Pro has 4 user reviews.​

UnitConverter Pro has an average rating of 4.0. ​The latest version of UnitConverter Pro 2.9​ ​​was ​released on Oct 09, 2017​.

You can download UnitConverter Pro ​here

Find growth insights on our blog

How to Respond to Google Play Reviews

How to Respond to Google Play Reviews

How to Respond to App Store Reviews

How to Respond to App Store Reviews

AppFollow identifies top apps in the App Store and Google Play in 2020

AppFollow identifies top apps in the App Store and Google Play in 2020

React to user feedback and market trends faster