Piet Jonas is Dedicated to all mankind! Recommended iPhone app God

You can save a history of calculations and email them to yourself for backup and further processing.

Features: - choose the same time for both players or individually - count the time down or up - pause the clock for both players - runs in the background while the app is closed

Features: - the background color changes with the wind speed - the direction of the wind is shown on a live compass - change between different wind speed units (beaufort, mph, km/…

Features: - The background color changes with the wind speed - The direction of the wind is shown on a live compass - Change between different wind speed units (beaufort, mph, km/h…

Features: - get name of the nearest place, its area and country - look up the location, area and country name on Wikipedia - links to nearby Wikipedia articles - thumbnail images o…

Features: - it calculates the shortest distance (on an orthodrome) or the distance with constant bearing (rhumb line or loxodrome) which you would follow by using a compass. - you…

Blue Moon: The second full moon event in the same month. Black Moon: The second full new event in the same month. Features: - show only blue, only black moon or both events - a…

Features: - show only total eclipses, only partial eclipses or both events - add eclipse events to your calendar - share event dates via e-mail, Twitter or Facebook - displays the …

Supermoon: A supermoon is a new or full moon (syzygy) which occurs when the Moon is at 90% or greater of its mean closest approach to Earth (perigee). Therefore you can called it a…

Features: - the background color and the snow animation changes with the chance of snow - find a location by name, postcode, latitude/longitude or your current location - the snow …