From Masayuki Iwasaki:
Active Calc is a new-generation CALCULATOR which allows you to calculate quickly and intuitively. You do not have to tap an equal key, because it works sequentially.Changing of clac method, active area, and values are available in any timing you like. Two types of display, chart and formula, will facilitate your understanding.This dynamic and intuitive calculator is also helpful for educational purpose.----- FEATURES -----+, -, x, /, power, power root, log, sin, cos, tan, asin, acos, atan----- BUTTONS ------- [value in chart] select active area-- [m display button] display lower prefix of SI-- [k display button] display higher prefix of SI-- [AC button] all clear-- [C button] clear active value-- [DEL button] delete one digit-- [Next button] scroll formulas, ready for repeat calc-- [Scl button] scroll formulas-- [+/- button] toggle sign of active value-- [m input button] input lower prefix of SI-- [k input button] input higher prefix of SI-- [method selector] change clac method----- BASIC USAGE -----Depending on what kind of calculation you want, tap "method selector".Tap anyone of three areas in the "chart" to make it active, which will be indicated by green color. Then you can input value in this area. You can use "tenkeys", "point key", "+/-", "m input", and "k input".Tap another area to input second value. The former selected area will change into yellow. During inputting second value, you will find the answer displayed in the unselected area in the chart, whichi is indicated by white color.All the prefix of SI, such as m, k, M, G are available when you input values. Furthermore, you can change display form of the answer, using "m display" and "k display".Mathematical formula is also displayed above the chart.After calculation, tap of "Next" allows you to go to next calculation using the former answer. In the same time, the formula scrolls by a line.Visit "App Support" site for detail.Or follow us on @SlideCalcL on Twitter for contact.We want to hear from you. Please rate this App.