# Philip Stephens Apps

Basic Calculator Pro 2.1
A simple calculator that carries out thebasicoperations of arithmetic. The buttons of the calculator areclearylayed out, making entering calculations a simple task.As well as the four basic mathematics operations thecalculatorcan carry out square roots and powers. There are buttonsto includeyour previous answer in the next calculation as well astheconstant pi. Brackets can be used to enter morecomplexcalculations.The calculator follows the usual BODMAS rules for orderofoperations. There is no limit to the size of the calculationbeingentered and the top half of the screen can be scrolledhorizontallyto both review and edit the input. The cursor positioncan be setby touching the screen or using the buttons just belowthescreen.Although limited to basic operations, keeping thedisplayuncluttered and simple to use, this is a robust calculatorgivingaccurate results up to at least 10 significant figures.Please note that √25𝜋 will be interpreted as the square rootof25 then multiplied by pi. To find the square root of 25𝜋 youmustuse brackets i.e. √(25𝜋) also the calculator will apply a lefttoright order of calculations for operations of equalprecedence,including for powers, i.e a^b^c is equivelant to(a^b)^c
Basic Scientific Calculator 3.4
A free, straight forward and simple to usebasic scientific calculator that is both robust and reliable. Aswell as the basic mathematics operators the scientific functionsincluded are the trigonometric and hyperbolic functions, and theirinverses, and logarithms to base 10 and the natural logarithmfunction. A key to calculate factorials has also been included tofacilitate statistics calculations.The scientific calculator's display can be customized with thescreen and background colors being changeable. Each individualbutton's color can also be changed.The calculator operates with a precision of up to 15 significantfigures, although this can be reduced in the settings menu.The calculator will store the last 10 calculations, which arere-editable. Simply use the left and right keys at the top of thekeypad or scroll the top half of the screen and tap where you wishto place the cursor.The simple and straight forward design makes this scientificcalculator easy to operate but powerful enough to use for a varietyof applications.
Scientific Calculator Pro 4.3
Scientific Calculator Pro a/f 4.2
This scientific calculator, ad free and withnofurther in app purchases, offers a comprehensive set ofusefulfeatures allowing you to carry out advanced calculations.Itssimple and intuitive design makes it a pleasure to use.Thecalculator has all the functions that would be expected ofascientific calculator and a number of advanced featuresallowingthe calculation of complex numbers, vectors, matricesandstatistical results. The calculator also includes agraphingfunction, in equation mode, allowing up to 4 equations tobe drawnon the same graph. The graph can be both scrolled andzoomed.The calculator is customizable allowing you to change thecolorsof the screen, background and all the individual buttons,allowingyou to personalize its appearance.The Scientific Calculator Pro's features include• basic mathematics operators addition,subtraction,multiplication, division and powers.• conversion between decimal and surd answers.• 7 modes of operation: Calculation, logic, vector,matrix,statistics, complex and equation.• all valid functions work with complex numbers, in complexmode,including trigonometric and inverse trigonometricfunctions.• indices and roots.• logarithms base 2 to 10 and base e (natural logarithm).• trigonometric and hyperbolic functions and their inversesandreciprocals.• 26 scientific constants.• unit conversions.• factorials, combinations and permutations.• degrees, minutes, seconds, radians andgradiansconversions.• fractions and percentages key.• absolute function.• modulo operator.• greatest common divisor and least common multiple.• logic operations and conversion between bases, includingchoiceof two's compliment or unsigned for decimal answers.• unit vector and scalar and vector products, in vectormode.• vectors can be enterred and displayed in cartesian,polar,cylindrical or spherical form.• inverse, transpose, cofactors, determinant and identitymatrix,in matrix mode.• one variable statistics: mean, sum of x, sum of x²,standarddeviation, sample deviation, n, min, lower quartile,median, upperquartile and max.• two variable statistics: product momentcorrelationco-efficient, sum of xy, covariance and linear,quadratic, cubic,exponential, power and natural logarithmregressions.• complex numbers can be entered and displayed in polarorcomponent form.• graph, numerical integration and differentiation, rootfinderand table output, in equation mode.• previous 10 calculations stored and re-editable.• last answer key (ANS) and five separate memories eachfornumbers, vectors, lists, and complex numbers.• random number generators including normal, poisson,binomialand geometric as well as uniform distributions.• probability distribution calculator for normal,poisson,binomial, student-t, F, chi-squared, exponential andgeometricdistributions.• user definable decimal marker (point or comma).• choice of division symbol.• automatic, scientific or engineering output.• automatic or manual entry for unary minus.• optional thousands separator. Choose between space or comma/point (depends on decimal marker).• variable precision up to 15 significant figures.• scrollable screen allowing arbitrarily long calculations tobeentered and edited and allowing results larger than the screentobe viewed.
Graphing Calculator 3.3.2
Graphing calculator, free and with no ads displayed on the maingraph screens. Super fast algorithms allow scrolling and zooming of2D graphs in real time, using the touch sensitive screen. 3D graphscan be calculated quickly and then viewed from any angle. Graphimplicit equations in both two and three dimensions. e.g. x²+y²=5²or 5x+2y-3z=15. Graph implicitly defined inequalities in twodimensions. e.g. 2x+5y<20. Display up to 5 graphs on the samescreen. Active analysis of functions, for better graphing of 2Dfunctions with singularity points. e.g. y=tan(x) or y=1/x. Fullscientific calculator. Calculate complex numbers and matrices.Comprehensive statistics functions. Customization of all calculatorand graph colors. A fully ad free version of this app is alsoavailable. The Graphing Calculator's functions include: • numericalintegration and differentiation of functions, with the resultsshown graphically. • find roots, points of intersection and turningpoints of functions on the graph. • key points, limits ofintegration, etc. can be selected by tapping on the graph or usinga key pad to enter exact positions. • pinch zoom and scroll all 2Dgraphs using the touch sensitive screen. • draw tables offunctions. • rotate 3D graphs using the touch sensitive screen. •statistics mode, including a full statistics summary withconfidence intervals and Chi-square tests, for relevant data. •linear, quadratic, cubic, exponential, power and natural logarithmregressions. • regression equations displayed graphically, allowinginterpolations to be taken from the graph. • normal, binomial,poisson, student-t, F, Chi-squared, exponential and geometricdistributions. • probability distributions displayed graphically,including inverse calculations for the continuous distributions. •basic mathematics operators addition, subtraction, multiplication,division and powers. • Choose the precedence (order of operations)for implied multiplication: 2÷5π → 2÷(5×π) 2÷5π → 2÷5×π •conversion between decimal and surd answers. • all valid functionswork with complex numbers, including trigonometric and inversetrigonometric functions. • complex numbers can be entered anddisplayed in polar or component form. • logic operations andconversion between bases, including choice of two's complement orunsigned for decimal answers. • inverse, transpose, cofactors,determinant and identity matrix. • indices and roots. • logarithmsbase 2 to 10 and base e (natural logarithm). • trigonometric andhyperbolic functions and their inverses and reciprocals. • 26scientific constants. • unit conversions. • factorials,combinations, permutations and gamma function. • degrees, minutes,seconds, radians and gradians conversions. • fractions andpercentages key. • absolute function. • previous 10 calculationsstored and re-editable. • last answer key (ANS) and five separatememories each for numbers and complex numbers. • user definabledecimal marker (point or comma). • choice of division symbol. •automatic, scientific or engineering output. • variable precisionup to 15 significant figures. • scrollable screen allowingarbitrarily long calculations to be entered and edited and allowingresults larger than the screen to be viewed.
Fractions Calculator Pro 3.5.0
This is the ad-free version of my Fractions Calculator. * Please beaware that this calculator uses the correct order of operations, somultiplication and division take precedence over addition andsubtraction. 5 + 3 × 5 → 5 + 15 = 20 • Easy to use interface allowsthe calculation of fractions and decimals. • The text-book styledisplay allows you to enter calculations as they would be written.• Calculate square roots, powers and percentages. • Conversionbetween decimal and surd answers. • Previous 10 calculations storedand re-editable. • The calculator's colors are customizable. • Userdefinable decimal marker (point or comma). • Optional thousandsseparator. Choose between space or comma/point(depends on decimalmarker). • Choose the precedence (order of operations) for impliedmultiplication: 2÷5π → 2÷(5×π) 2÷5π → 2÷5×π • Variable precision upto 15 significant figures.
Fractions Calculator 3.5.1
* Please be aware that this calculator uses the correct order ofoperations, so multiplication and division take precedence overaddition and subtraction. 5 + 3 × 5 → 5 + 15 = 20 • Easy to useinterface allows the calculation of fractions and decimals. • Thetext-book style display allows you to enter calculations as theywould be written. • Calculate square roots, powers and percentages.• Conversion between decimal and surd answers. • Previous 10calculations stored and re-editable. • The calculator's colors arecustomizable. • User definable decimal marker (point or comma). •Optional thousands separator. Choose between space orcomma/point(depends on decimal marker). • Variable precision up to15 significant figures. • Choose the precedence (order ofoperations) for implied multiplication: 2÷5π → 2÷(5×π) 2÷5π → 2÷5×πAn ad free version of the Fractions Calculator is also available.
Basic Scientific Calculator 1.4.0
An ad free version of the Basic Scientific Calculator isalsoavailable. • Easy to use interface allows the calculationoffractions and decimals. • The text-book style display allows youtoenter calculations as they would be written. • Calculatesquareroots, powers and percentages. • Conversion between decimalandsurd answers. • logarithms base 10, e (natural logarithm) and n.•trigonometric functions and their inverses. • 26scientificconstants. • unit conversions. • factorials, combinationsandpermutations. • degrees, minutes, seconds, radians andgradiansconversions. • Previous 10 calculations stored andre-editable. •The calculator's colors are customizable. • Userdefinable decimalmarker (point or comma). • Optional thousandsseparator. Choosebetween space or comma/point(depends on decimalmarker). • Variableprecision up to 15 significant figures.
• Easy to use interface allows the calculation of fractionsanddecimals. • The text-book style display allows you toentercalculations as they would be written. • Calculate squareroots,powers and percentages. • Conversion between decimal andsurdanswers. • logarithms base 10, e (natural logarithm) and n.•trigonometric functions and their inverses. • 26scientificconstants. • unit conversions. • factorials, combinationsandpermutations. • degrees, minutes, seconds, radians andgradiansconversions. • Previous 10 calculations stored andre-editable. •The calculator's colors are customizable. • Userdefinable decimalmarker (point or comma). • Optional thousandsseparator. Choosebetween space or comma/point(depends on decimalmarker). • Variableprecision up to 15 significant figures.
• Optimized algorithms allow scrolling and zooming of all graphsinreal time. • Find intersections and other critical points for2Dgraphs. • Choice of cartesian or polar axis for 2D graphs. •Drawimplicitly defined equations e.g. x²+y²=25. • Draw graphsofequations with cartesian, polar, spherical, cylindricalorparametric variables. • Draw graphs of functions of acomplexvariable, showing the real and imaginary outputs on separateaxis.• Choose between real/imaginary or modulus/argument outputforcomplex graphs. • Save images of the graphs to the phone'sgalleryfor use in projects, presentations, etc. • All the graphs'colorsare customizable.