Solve the most common mathematical exercises in school, with formulas and calculators showing every step of the calculation, including explanations and intermediate results.Mathinary is concentrated on math in schools from the third to the tenth grade, but also covering topics used in higher educations.Mathinary is an invaluable app for children in school, their parents and others who needs help with math or those who just want to freshen up their knowledge.The following topics are covered:* Plane geometryAnnulus, circle, circular segment, circular sector, parabola, parallelogram, polygon, points and lines, rectangle, rhombus, square, trapezoid/trapezium, triangle (construction, right and common) and the unit circle.Calculate, draw and learn the geometric shapes, with calculators which can draw parabolas, circles in the coordinate system, draw triangles with compass, ruler and protractor with step by step instructions and a lot more within geometry.* Solid geometryCylinder, cone, cuboid, prism, pyramid, sphere and truncated coneCalculate the solids and see the formulas for volume, surface area.* ConversionsArea, degrees and radians, length, volume, currencyConvert between different units, learn how to convert between different currencies and convert between degrees and radians, directly in the app.* FinanceCompound interest, currency conversion, future value of an annuity, percentage, present value of an annuity, value added tax.Learn the difference between the types of loans and savings. Get help with calculating percentages.* Algebra and numbersAdding/subtracting/dividing/multiplying using paper and pencil, exponentiation, first degree equations, fractions, number categories, parentheses, quadratic equations.See the rules for exponentiations and parentheses or learn how to divide two numbers on paper. The calculator sets up the division with step by step explanations.Learn how to solve equations or see if a number is a prime or a composite number.* Games and trainingLearn how to multiply the numbers from 1 to 10 with a fun little game. Easy at first, but very soon challenging.Mathinary has been tested on the following phones:HTC Legend, Wildfire, DesireLG Optimus Samsung Galaxy S2Mathinary requires Android 2.2 or above. (We are working on support for lower versions of Android)The developers can be contacted within the app, in the section “About and contact” and then “Contact us”.