Piet Jonas

This application helps to quickly calculate the sales tax or VAT you have to pay while you shop at h

Measure the time you take your shower (or to water the lawn) and calculate the amount of water used

Measure the time you take your shower (or to water the lawn) and calculate the amount of water used

Ease the pain of long journeys for your kids by counting cars with different colors. See which color

Remember the old egg spoon races on kids birthday parties? Now you don't need an egg and spoon a

This application rolls a dice with letters instead of the numbers 1 to 6. It can be used to get a ra

This application rolls a dice with letters instead of the numbers 1 to 6. It can be used to get a ra

Weight Chart hilft beim Überwachen des eigenen Gewichts und des Bauchumfangs über einen längeren Zei

Weight Chart helps to monitor your weight and waist circumference over time. Newer studies show that

This altimeter either uses GPS or the built in barometer (available since iPhone 6) to determine you