Calculator - Powerful, cheap, student, engineer, 25 at App Store analyse

App power index: 100 (based on ranks around App Stores today)
Utilities Education
Developer: john peng
Price: 0 free
Current version: 1.2, last update: 7 years ago
First release : 23 Oct 2015
App size: 1.08 Mb
4.0 ( 1520 ratings )
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Estimation application downloads and cost

> 2.2k
Monthly downloads
~ $ 900
Estimation App Cost


1. More accurate than PC calculator:
This calculator: sin(179.9999,9999,9999,9999,9999,9999,9999,9) = 1.7453,2925,1994,3295,7692,3691E-33.
PC calculator: sin(179.9999,9999,9999,9999,9999,9999,9999,9) = 1.7453,2892,0160,….E-33.
Ti-80 Plus: sin(179.9999,9999,9999,9999,9999,9999,9999,9) = 1.7453,2925E-33.

2. More powerful than PC and most student, commercial calculators:
This calculator: 6666666666666666^888888 = 3,9167,0185,4011,6629,1081,8672E14065658.
PC calculator: 6666666666666666^632. output: overflow.
Ti-80 Plus: 6666666666666666 ^7. output: ERR: OVERFLOW.

3. can calculate any complicated expression:
(((((ln(87) + e^3) * 56 - sin(69)) * 4!) / 5^(1/2) + pi) * 2.8^1.8) / 3.5 = 2.6890,8945,9852,5758,9584,0598E4.

4. Math and logic calculating, bin-dec-hex data converting.

5. Precisely output 25 digits.

6. Prohibit illegal inputs.

7. Prohibit mean-less inputs.

8. Error check when inputting.

9. Big button, easy to use.

10. Undo input.

11. easy-read result (result in sections).


Calculating Priority:

Math:
1) +, -.
2) *, /.
3) +/-.
4) sin(x), cos(x), tan(x), asin(x), acos(x), atan(x), y^2, y^3, y^(1/2), y(1/3), y^(-1), y^(1/n), y^x, 10^x, e^x, n!.

Logic:
1) or, and, xor.
2) LShift, RShift, LRShift, RRShift.
3) nor.

LShift: m LShift n: binary value m left shift n bits. right side fill with 0. left shift 1 bit, its value become double. Example: for 8bit, 1101111 LShift 4 = 01101111 LShift 4 = 11110000.
RShift: m RShift n: binary value m right shift n bits. left side fill with 0. right shift 1 bit, its value become half. Example: for 8bit, 1101110 RShift 3 = 01101110 RShift 3 = 00001101 = 1101.
LRShift: m LRShift n: binary value m left shift n bits. each time left shift 1 bit, its MSB shift to LSB. Example: for 8bit, 1101111 LRShift 4 = 01101111 LRShift 4 = 11110110.
RRShift: m RRShift n: binary value m right shift n bits. each time right shift 1 bit, its LSB shift to MSB. Example: for 8bit, 1101110 RRShift 3 = 01101110 RRShift 3 = 11001101.

For same priority, calculating from left side to right side if possible.
For different priority, the higher priority calculate first.
In logic calculating mode, the data after LShift, RShift, LRShift, RRShift is decimal even in bin or hex mode.

Design for: iPad Pro, iPad Retina, iPad Air 2, iPad Air, iPad 2, Resizable iPad, (iOS version: 9.1, 9.0, 8.4, 8.3, 8.2, 8.1, 7.1).
iPhone 6s, iPhone 6s plus, iPhone 6, iPhone 6 plus, iPhone 5, iPhone 5s, iPhone 4s, resizable iPhone (iOS version: 9.1, 9.0, 8.4, 8.3, 8.2, 8.1, 7.1).

Language: English, Mandarin-Simplied, Mandarin-Traditional.

Please click "Related" to download more good apps. Also, you can go to App Store to download same apps for Apple computers.

If you find a bug, please send all following info to my email address:
[email protected]. including the following message:
App name.
App version
Device name.
Device version.
Bug description.
Detailed procedure of how to re-produce the bug. it’s your responsibility to use this calculate.
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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,