Chronometer and Countdown HD vs Calculator Sharp

"Chronometer and Countdown HD" turns your iPad into a multi-stopwatch / multi-countdown timer. Useful in sporting competitions or during athletic training to measure athletic performance, in motor racing and wherever it is necessary to use one or more stopwatches / countdown (simultaneously). Features: - 4 independent chronometer (You can use them simultaneously together with the 4 countdowns) - Interruption and resumption of the stopwatches counting (independently one from another) - "Lap" for measuring the arrival of two subsequent events for each chronometer (total of 8 events simultaneously) - 4 countdown (independent and simultaneously) with remaining time adjustable (using the numeric keypad of the device) - synchronization buttons for all stopwatches and for all countdowns - chronometers and countdowns active even when the application is in the background

Calculator Sharp is a feature-rich, simple and practical operation of text calculator. Calculator tool Features : Ultra-high-precision, The accuracy of commonly calculator is 15, But Calculator Sharp can reach 37 accuracy. WYSIWYG glance. Easy to use, low threshold, for the majority of students and staff to use Support displays the calculated step function Support undo and anti- undo function Support flexible and complex calculations expressions. Specific Features * Support for the basic arithmetic operators * Support exponentiation * Support for radical sign operation * Support for logarithm operations * Support factorial and double factorial operator * Support Permutation and combination * Support trigonometric and inverse trigonometric * Support hyperbolic functions and inverse hyperbolic functions * Support for sum method and average method * Support for the maximum and minimum approach * Support for the greatest common divisor and least common multiple * Support for remainder * Supports integer interception , rounding up and rounding down to rounding methods. * Support random number and range of random numbers * Support summation (Σ) and quadrature (Π) op * Support definite integral (∫) operation * Support convert degrees to radians and radians to degrees operator * Support for binary, octal, decimal, hexadecimal conversion between. * Support degrees (DEG) and radians (RAD) two calculation modes * Support rounded to the decimal digits function * Supports Undo and anti-undo function. * Support the cursor forward and backward functions * Support clear and delete the previous character feature. * Support slide down keyboard and display the calculation steps function. Calculator Sharp for OS X:https://itunes.apple.com/us/app/calc-sharp/id888324648?ls=1&mt=12