October 21, 2015

Unit & Currency Converter (v1.4) manual

Hello. I'm android boy, the chief developer of Smart Tools co.,

Google Play store already has a lot of Unit Converting apps. But most are inconvenient and difficult to use because of poor and complicated UI (user interface). I tried to improve my unit app for 4 years, so that it has intuitive and simple UI.

This app would not include all units in the world. It shows only common units selected by users' feedback. And, the different unit sets appear depending on user's country and language.


※ Introduction video



※ Unit sections
 ① Basic : length (distance), area, weight (mass), volume (capacity)
 ② Living : exchange rate, temperature, time, speed, shoes, clothing, hat, ring
 ③ Science : pressure, force, work (energy), power, torque, flow, current, voltage, density, viscosity, concentration, astronomy
 ④ Misc. : angle, data, fuel efficiency, cooking, illuminance, radiation, prefix, binary (ASCII), time zone, blood sugar, AWG, number


※ How to use
 1) Select a category (Basic / Living / Science / Misc.)
 2) Select one of 4 sections
 3) Select an unit by LONG-CLICK on the list or click the selector
 4) Tap number input box, enter numbers with the keypad


※ Currency (exchange rates)
 - 118 currencies of 140+ countries, Bitcoin, XAU
 - [My currency] is set automatically depending on your telecom carrier and language.
 - You can select a region in the list on the app bar. All / Majors / Europe / ...

 - The refresh icon can get the latest exchange rates from our servers.
 - The exchange rates are based on Back of canadaFx-exchangeFX Exchange Rate etc.
 - Time delay of 1-12 hours occurs. The rates are for information purposes only.


※ Favorites
You can choose your own 4 favorites in Living, Science and Misc. categories.
Toggle checkboxes in the order you want (①-②-③-④).
When [Currency] section is selected, the favorites icon does not appear.


※ How to open "Torque" section.
  ① select SCIENCE category
  ② click the favorites icon on the app bar
  ③ release one of current 4 favorites

  ④ check [Torque] as your favorite
  ⑤ back to main
  ⑥ tap Torque icon


※ Menu & Settings
 ① My Currency
 ② Region : select currency region
 ③ Custom list : make your own list of currencies

 ④ Style : brown (default) / dark brown / black
 ⑤ My country : different unit sets depending on your country.
 ⑥ Accuracy
 ⑦ Vibration : vibration on/off on keypad


※ Custom list of currencies
 - Go menu > settings > custom list
 - USD is always the first to avoid errors.
 - Turn on currency checkboxes in the order you want.
 - You can select up to 10.


※ When I traveled abroad, I could not find some units.
My app shows different unit sets depending on your country. It guesses your country according to your telecom carrier and system language.

When you travel abroad, other unit sets can appear because of overseas roaming. In this case, select your own country in [My country] option at the settings.


※ How to input fractions
In length and weight section, this app has [. /] button on the keypad. You can input fractions with it.

ex1) 5 1/4 =>  [5] + [./] + [1] + [./] + [4]
ex2) 3/8 = 0 3/8 => [./] + [3] + [./] + [8]   (Look out!! 3/8 is less than 1.)
       or [3] + [./] [./] + [8]


※ How to input "ft and inch" at the same time
Select "ft in" unit. For various inputs, you can use fractions. "lb oz" are the same.

ex1) 2' 3.5" =>  [2] + [ ' "/ ] + [3] + [ ' "/ ] + [5]
ex2) 1' 2 5/8" => [1] + [ ' "/ ] + [2] + [ ' "/ ] + [5] + + [ ' "/ ] + [8]


※ How to input "deg min sec"
Select "deg min sec" or "deg" unit in angle section. You can input "deg min sec" with [.˚ '] button on the keypad.

ex1) 1˚ 23' 45.67" =>  [1] + [.˚'] + [2][3] + [.˚'] + [4][5] + [.˚'] + [6][7]
ex2) 0˚ 1' 2" =>  [.˚'] + [1] + [.˚'] + [2]


※ Data storage / flow ?
This app shows data storage and data flow in data section so as to save a tab. It is not a mistake. Similarly, it shows speed and running face units in speed section, too. By the way, do you know the difference of "kb", "kB", "kib", "kiB", "kbps"?
 b : bit
 B : byte
 k : kilo (1000)
 Ki : kibi (1024)
 M : mega (1000 x 1000)
 Mi : mebi  (1024 x 1024)
 kbps : kilo bit per second


※ Landscape mode
It supports landscape mode for tablet PCs. Select more menu (3 dots) at the top-right corner.


※ FAQ
Q. How to copy the number to clipboard?
A. Double-tap on the number

Q. How can I convert from gram to litre?
A. "gram" is weight unit, "litre" is volume unit. They cannot be converted. Water 1kg = 1L, gasoline 1kg = ~0.70L

Q. Where is "A (amp)" unit?
A. Click the favorite icon (star) in Science category. Select [Current] checkbox.

Q. "kg" is not a weight unit, but a mass unit.
A. I know. weight = mass x Gravity. "mass" and "weight" are same in earth.
Above all, "weight" is a friendly word and the public do not understand "mass" perfectly.

Q. I need more units such as kHz, MHz, GHz ...
A. How about using "prefix" section?

Q. The red gift icon appears. What is it?
A. It removes ads and turns your screen into the paid version screen layout.


※ Pro version additional features:
 1) No ads
 2) Message box for information (unit name, formula, ...)
 3) More options at the settings (accuracy, layout, sound effect)
 Get it on Google Play


※ Pending update
- unit arrangement.
* If you need a skipped unit for your job, let me know it.


※ What's new
 - v1.4.4 : Copy to clipboard (double-tap on the number)
 - v1.4.3 : CUC,HTG,MGA,MOP,MWK
 - v1.4.2  : My country option, Thai
 - v1.4.1  : (+ - × ÷), SDK 15 and more
 - v1.4.0  : Number
 - v1.3.11 : 1' 2 3/4", U.S. Survey foot, Galaxy S8 support
 - v1.3.10 : Style(dark brown)
 - v1.3.9 : Share menu, mm³, AMD, AWG, KGS, LYD, SCR
 - v1.3.8 : [lb oz], cwt, AOA, AZN, XAU, ZMW currencies
 - v1.3.7 : Ring, [ft in] improve
 - v1.3.6 : BYN, BWP, DZD, GYD, PGK currencies
 - v1.3.5 : Reset settings
 - v1.3.4 : Concentration
 - v1.3.3 : Shoes, Clothing, Hat, Custom currencies list
 - v1.3.2 : TTD, MMK, AFN, ETB, Translation error menu
 - v1.3.0 : ASCII, GEL, NIO
 - v1.3 : Material design, Bitcoin
 - v1.2 : Favorites on Science and Misc.
 - v1.1 : Currency exchange rates
 - v1.0 : Released (Nov, 2013)
https://play.google.com/store/apps/details?id=kr.sira.unit

If you have any idea to improve it, feel free to contact me. androidboy1@gmail.com
Thank you.