Piet Jonas

Don't miss a bright lunar disk and countdown to the next supermoon events. Supermoon: A supermoon is a new or full moon (syzygy) which occurs when the Moon is at 90% or greater of ..

Looking for a time filler or even a new hobby? Let's try to find an new palindrome which is a word or phrase that can be read the same way in either direction (the adjustment of pu..

This is a full text calculator. Just enter your formula in the text box and tap the '=' button (or 'Return' on the keyboard). It keeps a history of your calculations. This way you ..

This application shows the current outdoor temperature for different locations, measured by a nearby weather station. Features: - the background color changes with the temperature ..

这个应用程序可以帮助教师跟踪他们在学校和大学不同班级的成绩、分数和学分。它总是显示最新的平均分数或每个学生的学分总和和分数。 更多功能： -您可以为每个班级设定一个目标，并查看哪些学生已经达到目标，哪些学生没有 -通过电子邮件发送数据以备备份和进一步处理

计算一组数的算术平均数、几何平均数、调和平均数、标准差和置信区间。可以保存和计算不同的数据集。 计算器结果可以通过电子邮件发送。

在一个应用程序中查看内置设备传感器的值。支持 (如果有) 加速度、航向 (指南针) 、压力、位置、高度和速度。 此外，它通过互联网从GeoNames数据库获取当前位置名称和高程，并通过互联网从世界天气在线获取当地室外温度和气压。 更多功能: -在英制和公制单位之间切换 -可选地隐藏不可用的传感器 -支持iPad多任务处理 (拆分视图)

用不同的搜索引擎和服务快速搜索WWW。 特点: -保留您的搜索历史列表 -先按最近最少使用的发动机自动订购 -将您的默认引擎固定到前4个点之一 -添加，编辑和删除搜索引擎 -使用OpenSearch标准查找搜索引擎 -支持iPhone 6和6 -支持iPad多任务处理 (拆分视图) 广告支持的免费软件

在不同国家/地区获得即将到来和当前假期的倒计时。 特点: -将假日活动添加到日历 -分享假期 -使用缓存的日历数据离线工作 -支持iPhone 6和6 -支持iPad多任务处理 (分割视图) 苹果手表功能: -不同国家的即将到来和当前假期 -观看应用程序和浏览界面，以快速查找

这个应用程序有助于计算你的汽车的里程，当你在路上快速和容易。此外，它可以为您提供每距离的成本和汽车的最大续航里程。 您可以保存您可以在表格中看到的计算历史记录或在图形上绘制，然后通过电子邮件将其发送给自己以进行备份和进一步处理。 支持公制、英制和英国单位。

描述浏览网络并将网站上的任何图像设置为墙纸。此应用程序从网页 (HTML和CSS) 收集图像。单击图像以全屏查看并截屏，以便您可以将其用作墙纸图像，或者将图像保存到照片卷中。 更多功能: -图像的表格和列表视图 -全屏模式下的不同背景 -它收集网站的链接，因此很容易从主页开始并跟随链接，直到您到达包含所需图像的页面 -保存书签 -切换自动换行 (点击源) -..

更新为2017/2018旅游日期。 查看当前和即将举行的PGA巡回赛比赛的时间表和倒计时。 特点: -将高尔夫锦标赛添加到日历 -分享高尔夫赛事 -使用缓存的日历数据离线工作 -显示跑步锦标赛 -支持所有iphone -支持iPad多任务处理 (分割视图) 广告支持的免费软件

监控您的服务器或任何其他网站。应用程序定期使用HTTP头请求检查响应时间，这不会对服务器造成太大影响。它显示了响应时间图表，响应时间统计信息，并具有错误日志，您可以在其中查看何时以及为什么对服务器的请求失败。

Entering URLs isn't really fun. Most of the time only the domain name varies while the rest consists of standard parts with a lot of special characters which are error prone to ent..

See the schedule and countdown to the upcoming and current Nascar, Indy Car and Formula One races. Features: - add racing dates to calendar - share racing events - works offline wi..

Updated for Nascar, Indy Car and Formula 1 races 2017 See the schedule and countdown to the upcoming and current Nascar, Indy Car and Formula One races. Features: - add racing date..

Do you ask yourself sometimes, where in the world is this country? This application shows each country of the world on the map. Either select it from the list or jump around random..

Updated for the season 2017 See the schedule and countdown to the upcoming and current MLB baseball games. Features: - add baseball games to calendar - share baseball game events -..

Updated for the season 2018/2019 See the schedule and countdown to the upcoming NHL hockey games. Works offline with cached calendar data. Features: - add hockey games to calendar ..

Simulates a glass ceramic cooktop. Use your device as a hob avatar e.g. for kitchen planning. You can control the hob by pressing the buttons, use the pinch gesture or shake the de..

Enlarge your photos with this virtual magnifying glass. Tap and move your finger over the photo to quickly check every detail like the sharpness or hidden elements. Features: - ope..

Find the distance and direction between any two places on earth (after upgrade). Features: - it calculates the shortest distance (on an orthodrome) or the distance with constant be..

Countdown to the exact start time of the next seasons. More features: - for the northern and southern hemisphere - astronomical (standard) and meteorologic (March 1st, June 1st,) s..

Harvest all the dots from a planet. Control the thrust of the lander by tapping the screen. If your device supports 3D Touch (iPhone 6s and later) the harder you press the more thr..

Turn your device into a ruler and measure small distances in either imperial inches or metric cm and convert any value between the two units. Features: - inch/cm converter for any ..

This application lets you quickly chart data series just by entering the numbers (separated by comma or space). Features: - multiple data series and charts - Turn the phone to quic..

Don't travel to Austria or Switzerland without this database of the license plate signs of both countries. The letter code denotes the different regions and cantons. You can search..

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 constant angle on a so called..

Convert between degrees Celsius and degrees Fahrenheit. Features: - °F/°C converter for any arbitrary value - tap and drag the line to snap to multiple degrees - nicely animated th..

Did you always want to know which day of week you or one of your friends was born? This weekday calculator application calculates the day of the week for any date in the past and t..

Did you always want to know which day of week you or one of your friends was born? This weekday calculator application calculates the day of the week for any date in the past and t..

This altimeter either uses GPS or the built in barometer (available since iPhone 6) to determine your current elevation on earth. While GPS provides the absolute altitude as long a..

Calculates the arithmetic mean, the geometric mean and the harmonic mean as well as the standard deviation and the confidence interval of a set of numbers. The calculator results c..

Weight Chart hilft beim Überwachen des eigenen Gewichts und des Bauchumfangs über einen längeren Zeitraum. Neuere Studien zeigen, dass ein Bauchumfang zu Größenverhältnis von mehr ..

Countdown to the next total and partial eclipses of the moon. Features: - show only total eclipses, only partial eclipses or both events - add eclipse events to your calendar - sha..

Watch the motion force on your device and get alarmed when the acceleration exceeds a self defined limit.

SpeedyMarks makes it easy to create visual bookmarks and quickly open your favorite web sites. It is insprired by Operas Speed Dial feature. The screenshots for the web sites are p..

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 comes with its own calculator for ..

This application helps to calculate the average velocity over a given distance. Use this to measure e.g. your walking and running speed or to calibrate your car speedometer. It doe..

This altimeter delivers the altitude of your current position either from the device (GPS) or from the ASTER digital elevation model (with a horizontal accuracy of 30m). Depending ..

Protect your planet from falling rocks as long as possible. Only a few satellites help you maintain a shield while showers of meteors fall on to your surface. How long can you surv..

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 yourself or run a long simulat..

This altimeter either uses GPS or the built in barometer (available since iPhone 6) to determine your current elevation on earth. While GPS provides the absolute altitude as long a..

This application shows the current outdoor wind speed and direction for different locations, measured by a nearby weather station. Features: - beaufort scale, wind speed and wind d..

Don't travel to Germany without this database of the German license plate signs. The letter code denotes the different regions. You can search for the code, the region, the cities ..

A selection of dedicated calculators bundled in one app: - Full text calculator with history - Percentage calculator - Savings and interest calculator - Loan & mortgage calcula..

This application shows the current local air pressure, measured by the internal pressure sensor (if available) or a nearby weather station for which it uses your current location. ..

Monitors your servers or any other web site. The application checks the response time periodically with a HTTP HEAD request which doesn't put much impact on the server. It shows a ..

This application helps teachers to keep track of the grades, marks and credits of their different classes in school and university. It always shows the up to date average mark or t..

This percentage calculator helps to find the proportion between two values expressed in percent. You can calculate any value in the percentage equation, just fix the one you want t..