Calculator Professional by Happylife Studios (Universal)
Released: Aug 22, 2011
Version: 2.2
Size: 8 MB
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Price History

Ranking - Utilities (iPhone)

Ranking - Utilities (iPad)

Calculator Professional

Happylife Studios
This is a powerful alternative calculator with keyboard support for iPhone and the best choice for iPad. You could choose different themes to make you comfortable. It contains normal and scientific modes for different users. And for expert users, it also supports using keyboard to edit the expressions directly. There're about 50 built-in functions and constants supported in current version. This calculator keeps your inputs as history records, and you could load them for another calculation later. Use the powerful backspace and keyboard support, you could edit your expressions as you wish. The math kernel is super powerful and support extra big numbers and high decimal precision. It also provides the ability to convert numbers between hexacdecimal and decimal which is an additional benefit for students and programmers. Use it once and you'll be hooked.

✓ Keyboard Support
--- For expert, use keyboard to edit complicated expressions

✓ More than 50 built-in functions and constants
--- Covered math and logic functions
--- All functions and constants support keyboard input.

✓ Two modes
--- Standard mode designed for quick and basic calculation.
--- Scientific mode designed for complex calculation with expression editable ability.

✓ With 10 beatiful Themes
--- For both standard and scientific modes.
--- Choose you favorite one.
--- Will add more later version.

✓ Higher precision
--- Up to 20 decimal digits.
--- The high precision ensures that you would get less rounding error in the end.

✓ Super big number support
--- Up to support 9.0E+536870000 .

✓ Scrollable expression window
--- The font size will shrink automatically.
--- You can use finger to scroll horizontally.
--- All contents can show without limit.

✓ History
--- You can Load and modify history expression for another calculation.

✓ Editable
--- Use the CE and backspace button to edit the expression.
--- Use external or internal keyboard to edit

✓ Convert between hexacdecimal and decimal
--- Programmer's favorite.
--- Type "100 Hex=", and will get "0x64" in hexadecimal.
--- Type "Hex 64=", and will get "100" in decimal.

✓ Angle mode
--- support Degrees and Radians mode.

✓ Lots more and try it NOW!

What's new in version 2.2
Support iOS 5;
Minor bug fix;
Support Chinese locale.
Our verdict: Good
  • + Calculator Professional is a highly rated app (4.5-star).
  • + It is currently 50% off its regular price.
  • + The app is also at the lowest price we've seen.
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