Name: Qalculate! (GTK UI)
Author: Hanna Knutsson

Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).
 Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface.

Qalculate! (GTK UI)

Changes:
 <ul>
 <li>Set ans variable to solution(s) of equation (as if solve() function were used)</li>
 <li>Option to disable cursor blinking</li>
 <li>a(i) and a[i] syntax (the latter with support for functions) for element in vector</li>
 <li>New function: factor()</li>
 <li>Use hours or minutes as default unit for conversion to time unit of expression with time format but no units (e.g. "0:00:12 to s")</li>
 <li>Always use four digits for year in date (e.g. "0064-07-18" instead of "64-07-18"), and support input of date using DD-MM-YYYY format</li>
 <li>Fix solving of x^4-4x^3+10x^2-12x+1=0, and similar, in exact mode</li>
 <li>Fix rounding in 1/# conversion to integer (e.g. "1/2 to 0.99")</li>
 <li>Fix unability to find approximate solutions to some high degree equations (e.g. "x⁴ − 4x³ + 10x² − 12x = −1")</li>
 <li>Fix automatic variable detection in select()</li>
 <li>Minor bug fixes and feature enhancements</li>
 </ul>

Changes:
 <ul>
 <li>Option to specify number of displayed significant digits, instead of using precision</li>
 <li>Option, in menu, to open settings folder(s)</li>
 <li>Improve decision to automatically convert unchanged quantity with unit</li>
 <li>New functions: tripleProduct(), multilimit()</li>
 <li>Hungarian translation</li>
 <li>Updated French translation</li>
 <li>Fix number base subscripts in programming keypad, and fix updating of number bases before any calculation has occurrred</li>
 <li>Fix keyboard shortcut with copy followed by quit</li>
 <li>Fix initial selection and exclusion of optional arguments from output of insert function dialog</li>
 <li>Fix precision in Preset mode</li>
 <li>Fix case conversion of µ to M and similar</li>
 <li>Fix segfault with very large integer raised by very large integer</li>
 <li>Minor bug fixes and feature enhancements</li>
 </ul>

Changes:
 <ul>
 <li>Show language menu in preferences on all platforms</li>
 <li>Improve initial value and clear all other fields when edited field is empty, in number bases and floating point conversion dialogs</li>
 <li>Allow unit expressions for insert unit action, for custom shortcuts and buttons</li>
 <li>Set minimum characters to two for all completion with "Limited full completion"</li>
 <li>Support x without backslash for custom function argument condition</li>
 <li>Update parsed expression and calculate-as-you-type result if variable, function, or unit in expression has changed</li>
 <li>Update conversion dialogs when expression has been calculated</li>
 <li>Restructured code</li>
 <li>Fixes for overwrite input mode</li>
 <li>Fix Up and Down item in context menu of RPN stack</li>
 <li>Fix tiny exponents in prefix menus</li>
 <li>Fix copy unformatted ASCII without units when decimal separator is comma</li>
 <li>Fix memory leaks</li>
 <li>Fix segfault with recursive (self-referencing) function</li>
 <li>Fix input of negative exponent in scientific e notation with RPN syntax</li>
 <li>Fix parsing of 1°2'3" as 1°+2'+3"</li>
 <li>Improve handling of "where" expressions with inequalities</li>
 <li>Fix definite integral for 1/sqrt(1-x^2), with limits higher/lower than or equal to -1 and 1</li>
 <li>Fix crash with empty vector in plot function, e.g. plot([])</li>
 <li>Fix "did you mean..." warning for two implicitly multiplicated functions without space between (e.g. "atan2(a,b)atan2(c,d)")</li>
 <li>Minor bug fixes and feature enhancements</li>
 </ul>

Changes:
 <ul>
 <li>Physical constants updated with CODATA 2022 values</li>
 <li>New function: allroots()</li>
 <li>New units: therm, thermie, IUNS calorie, rpm</li>
 <li>Additional names/symbols for turn unit</li>
 <li>Use symbol "cal" for thermochemical (instead of international table) calorie</li>
 <li>Change title and names/symbols of weak mixing angle (prepend "sin2" to theta variants)</li>
 <li>Return exact negative integers in log10()</li>
 <li>More conservative handling of infinity in equations</li>
 <li>Remove n from equation solution if possible using assumptions of x</li>
 <li>Save date and time for history items, add search by date, and show date of selected history item in search by date context menu item</li>
 <li>Option to change the max number of history lines saved</li>
 <li>Option to save history to separate file</li>
 <li>Improved sorting of text strings with Unicode characters</li>
 <li>Reverse order of row and column for element index in matrix dialogs</li>
 <li>Fix extremely small superscript and subscript with some fonts and on Windows with scaling ≥200%</li>
 <li>Fix empty windows when opened a second time</li>
 <li>Fix subsequent tab completions after completion of unit with prefix</li>
 <li>Fix input of scientific E-notation using lowercase e in numbers using concise interval notation, in expressions</li>
 <li>Fix "bit width" and "signed integer" arguments in setbits()</li>
 <li>Fix a^(f(x))=a^(b*g(x)) where b=2 or b=3</li>
 <li>Fix auto/dual approximation with "where" expression</li>
 <li>Fix "where" expressions with multiple inequality statements for a single variable, e.g. "where x≥0 and x≤10"</li>
 <li>Fix crash when a variable name/symbol with more than 20 characters is used in "where" expression</li>
 <li>Minor bug fixes and feature enhancements</li>
 </ul>

Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).
      Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface.
    

Qalculate! (GTK UI)

Powerful and easy to use calculator

Changes in version 5.5.0

Community built

Other apps by Hanna Knutsson