I need an Iphone App with the following features
Input: Frequency (in seconds) - possible numbers: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60
Indicator where you can choose: should the app beep or buzz (just shake - without sound) or both
Volume slider - determines the volume of beep and/or strength of buzz
A button with the word Start
A button with the word Stop
When the frequency number has been chosen and the beep, buzz or both has been chosen, and the start button has been pressed, the app should beep or buzz every <number> seconds. At the same time, a counter should count down from the chosen number to zero repeatedly. Title: Seconds left.
When stop is pressed, the app should stop.