Piet Jonas

Create timers to monitor how long it takes to do your work, how long you make a pause or whatever you have to time. The timer keeps running even when …

Check your speed and get warned if you drive faster than the speed limit to avoid speed tickets.Features: - supports metric km/h and imperial mph spee …

This percentage calculator helps to find the proportion between two values expressed in percent.You can calculate any value in the percentage equation …

This altimeter delivers the altitude of your current position either from the device (GPS) or from the ASTER digital elevation model (with a horizonta …

Impress and surprise your friends with the Monty Hall Paradox from the famous game show "Let's make a deal".This application let's you play the game y …

Quickly see where and how high you are on earth. If you define a target you can see how far you still have to go and in which direction. It uses the a …

This application rolls a dice with letters instead of the numbers 1 to 6. It can be used to get a random letter from either A to Z or a custom set for …

Creates a number of counters which countdown to the upcoming events from public Google Calendars. Any public calendar can be the source for a counter. …

Monitor the exchange rates for all major currencies. Choose which one you want to see and which amount you want to change. Each selected currency come …

Is it time to think about your weight?. If you plan to start a diet or just want to stay in shape this application is for you. Track your daily calori …