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Version
4.0
Size
1.33 Mb
Updated
1 week ago
Released
13 Oct 2011
Screenshots
Description
A serious engineering calculator that opens ready to use, with nothing interrupting you.
ENGINEERING MODE
Five keypad pages, from everyday arithmetic to graduate maths:
• Functions: x^y, square and cube roots, nth root, |x|, n!, e^x, ln, log, log2, mod, floor, ceil
• Trigonometry: sin/cos/tan, inverse, hyperbolic and inverse hyperbolic, degrees or radians
• Discrete: permutations nPr, combinations nCr, GCD, LCM, AND/OR/XOR/NOT, bit shifts
• Analysis: series, products, derivative d/dx, definite integral, mean, median, standard deviation, variance
• Constants: pi, tau, e, phi, plus 15 physical constants including the speed of light, the gravitational constant, Planck's constant and Avogadro's number
Derivatives use central differences and integrals use adaptive Simpson quadrature, not lookup approximations. Bitwise work shows hexadecimal, octal and binary side by side, with two's complement for negative numbers. Memory keys M+, M-, MR, MC and cursor keys let you go back and edit a long expression instead of retyping it.
Expressions honour parentheses and operator precedence, and the result previews as you type, so you rarely need the equals key.
UNIT CONVERSION
224 units across 15 categories: length, weight, volume, area, speed, time, temperature, pressure, power, energy, data, density, angle, force and electricity. Temperature uses the correct formulas rather than a scaled ratio.
CURRENCY CONVERSION
166 currencies, updated daily. See one amount in several currencies at once, and type an expression straight into the amount field. Rates are stored on the device, so it keeps working offline.
WHAT THE PAID VERSION GIVES YOU
• No advertising of any kind, and no in-app purchases
• Opens directly into the calculator, in engineering mode
ALSO
• 20 languages, with number formatting that follows your region
• Dark mode
• No account, no sign-in
Privacy: no personal data is collected, and what you type never leaves your device.
Estimates
Availability
Devices
iPhone3GS
iPadWifi
iPad3G
iPhone4
iPodTouchThirdGen
iPodTouchFourthGen
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
iPad75
iPad76
iPhoneXS
iPhoneXSMax
iPhoneXR
iPad812
iPad834
iPad856
iPad878
iPadMini5
iPadMini5Cellular
iPadAir3
iPadAir3Cellular
iPodTouchSeventhGen
iPhone11
iPhone11Pro
iPadSeventhGen
iPadSeventhGenCellular
iPhone11ProMax
iPhoneSESecondGen
iPadProSecondGen
iPadProSecondGenCellular
iPadProFourthGen
iPadProFourthGenCellular
iPhone12Mini
iPhone12
iPhone12Pro
iPhone12ProMax
iPadAir4
iPadAir4Cellular
iPadEighthGen
iPadEighthGenCellular
iPadProThirdGen
iPadProThirdGenCellular
iPadProFifthGen
iPadProFifthGenCellular
iPhone13Pro
iPhone13ProMax
iPhone13Mini
iPhone13
iPadMiniSixthGen
iPadMiniSixthGenCellular
iPadNinthGen
iPadNinthGenCellular
iPhoneSEThirdGen
iPadAirFifthGen
iPadAirFifthGenCellular
iPhone14
iPhone14Plus
iPhone14Pro
iPhone14ProMax
iPadTenthGen
iPadTenthGenCellular
iPadPro11FourthGen
iPadPro11FourthGenCellular
iPadProSixthGen
iPadProSixthGenCellular
Pricing by country
| Country | Price |
|---|---|
| Canada | 6.99 CAD |
| China | 38 CNY |
| France | 5.99 EUR |
| Germany | 5.99 EUR |
| Italy | 5.99 EUR |
| Netherlands | 5.99 EUR |
| Portugal | 5.99 EUR |
| Spain | 5.99 EUR |
| Poland | 1.09 EUR |
| UK | 4.99 GBP |
| India | 499 INR |
| Japan | 800 JPY |
| Korea, Republic Of | 7700 KRW |
| Poland | 24.99 PLN |
| Russia | 449 RUB |
| Turkey | 249.99 TRY |
| USA | 4.99 USD |
| Korea, Republic Of | 1.09 USD |
| Ukraine | 5.99 USD |
Version History
Latest: 4.0
This release is a complete rewrite.
Engineering calculator
• A new calculation engine with over 60 functions, including derivatives, definite integrals, series, permutations and combinations, and bitwise operations
• Hexadecimal, octal and binary shown together, with two's complement for negative numbers
• Results preview as you type, so you rarely need the equals key
• Cursor keys for editing long expressions
• Fixed results being truncated to 6 decimal places
Unit conversion
• 224 units across 15 categories
• Fixed incorrect conversion factors carried over from the old version
Currency conversion
• 166 currencies, updated daily
• Tap a currency on screen to make it the one you type in
• Small amounts keep their precision instead of rounding away
Also
• Redesigned throughout, with dark mode
• 20 languages, up from 3
Price changed to $0.99
v3.2
1 week ago
