Boyle Charles Calculator at App Store analyse

App power index: 100 (based on ranks around App Stores today)
Utilities Education
Developer: Mineo Yamauchi
Price: 0 free
Current version: 2.10, last update: 7 years ago
First release : 15 Aug 2012
App size: 309 Kb
4.6 ( 6416 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


Boyle Charles Calculator is a calculation sheet that solves a gas problem of volume, pressure, and temperature. This Boyle Charles Calculator is a subset of iPad Mol Calculator software.

A typical problem is as follows.

(Example)
There is 0.05 mol of hydrogen gas.
(1)When the temperature is 20 ℃ and the pressure is 1 atmosphere, how much liters is the gas ?
(2)When the temperature is 20 ℃ and the gas is packed in a 0.1-liter container, how much is the pressure of hydrogen gas?

(1)Volume calculation

Boyle Charles Calculator solves the problem in the following three steps.

//Step 0: Preparation//
Gather known data.

//Step 1: Definition//
Enter known data into the BC sheet.
Mol = 0.05, T = 20[C], p = 1[atm]

//Step 2: Calculation//
Data are not independent but mutually related by formulae.
Calculation is a conversion from unknown data to known data using the formulae.
The formulae are embedded in P and G buttons.
Touching out those buttons executes the formulae and changes unknown data to known data.
Touch out buttons as follows.
Touch out P_Mol button. StdVol and Vol data are changed to known data.
It turns out that the volume of hydrogen gas is 1.2 L.

(1)Pressure calculation

//Solution by V1.00//
Use the above results.
Enter the following data
Vol = 0.1[L]
Touch out G_Pres button. Pressure data are changed to known data.
It turns out that the gas pressure is 12.02 atmospheres.

//Solution by V2.00//
Change PresVol mode to pressure mode.
//Step 1: Definition//
Enter the following data.
Mol = 0.05, T = 20[C], Vol = 0.1[L]

//Step 2: Calculation//
Touch out P_Mol button. StdVol and Pres data are changed to known data.
It turns out that the gas pressure is 12.02 atmospheres.

[Data label]
n [mol]: Mol quantity of substance.
StdVol [L]: Gas volume of substance at 0 deg C and 1 atm.
T [C][F]: Temperature.
p [atm][kPa][mmHg]: Pressure
Vol [L]: Gas volume of substance at the temperature T and at the pressure p.

[Buttons and data]
//P button and P data group//
P (put) button inputs data to which the P button is assigned.
P data group is a group of data to which the P buttons are assigned. The P data group has a special character. When one P data is input, all other data of the P data group are updated by formulae.

//G button//
G (get) button gets data from other data using formulae.

//C butto//
C (Clear) button clears all data.

//PresVol button//
Either pressure data or volume data belongs to P button data group.
The PresVol button specifies pressure mode or volume mode.

[Color change]
Color change shows what data are input, output, or referenced data in this button execution.
Input data:Blue color
Referenced data:Yellow color
Output data:Green color
Uncalculated data:Red color

[Formulae]
Embedded formulae are as follows.
StdVol = 22.414 x n
StdVol /273.15 = p x Vol / (T + 273.15)
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Available in countries
Country Price
Canada 3.99 CAD
China 18 CNY
France 3.49 EUR
Germany 3.49 EUR
Italy 3.49 EUR
Netherlands 3.49 EUR
Portugal 3.49 EUR
Spain 3.49 EUR
Poland 3.49 EUR
UK 2.99 GBP
India 249 INR
Japan 360 JPY
Poland 13.99 PLN
Russia 229 RUB
Turkey 12.99 TRY
USA 2.99 USD
Korea, Republic Of 3.29 USD
Ukraine 2.99 USD
Available for devices
iPad2Wifi, iPad23G, iPhone4S, iPadThirdGen, iPadThirdGen4G, iPhone5, iPodTouchFifthGen, iPadFourthGen, iPadFourthGen4G, iPadMini, iPadMini4G, iPhone5c, iPhone5s, iPadAir, iPadAirCellular, iPadMiniRetina, iPadMiniRetinaCellular, iPhone6, iPhone6Plus, iPadAir2, iPadAir2Cellular, iPadMini3, iPadMini3Cellular, iPodTouchSixthGen, iPhone6s, iPhone6sPlus, iPadMini4, iPadMini4Cellular, iPadPro, iPadProCellular, iPadPro97, iPadPro97Cellular, iPhoneSE, iPhone7, iPhone7Plus, iPad611, iPad612, iPad71, iPad72, iPad73, iPad74, iPhone8, iPhone8Plus, iPhoneX,