Circle and Sphere Pro

Name: Circle and Sphere Pro
Price: 2.99 USD
Rating: 4.9 (7 reviews)
Author: Glindemann, Sennoun, Langer GbR

Calculates all quantities

$2.99 · Designed for iPad

7 Ratings
Ages

4+
Years
Category

Education
Developer

Glindemann, Sennoun, Langer GbR
Language

EN
+ 10 More
Size

183.7
MB

Also Included In

Geometric bodies for middle school (Solving Math)

Education
Basics of trigonometry for school (Solving Math)

Education

This app calculates all quantities of a sphere (body of a sphere, circle, all parts of sector and segment). Therefore you must enter some variables (like the radius of a circle and the central angle). The algorithm searches the formulas of the missing quantities, shows them and calculates the results. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Content ] - all important quantities for the circle and sphere calculation - formulas for all important quantities of a sphere, circle, sector and the segment - infographic to illustrate the topic - search bar to find the desired quantity - history function to save input - detailed solution - positive numbers, decimals and fractions are supported - no ads! [ Usage ] - there are several fields for entering the values using a special keyboard - if values are missing, all fields are highlighted in orange - if values are oppositions (like "r = 1 and d = 3"), one affected field is highlighted in red - every value must be positive - maximum of alpha is 360° - beta must be less than 90° - if a value is no number, it is highlighted in red - the entries in the history can be deleted or sorted manually - if you select an entry in the history, it will be loaded automatically for the calculation - the entire history can be deleted by pressing a button - solutions can be shared

Ratings & Reviews

4.9

out of 5

7 Ratings

Change the units?
04/15/2024

Batman2287
This app is great. The only problem I have is it’s in meters. How can I make it feet or another unit? This is pointless if all we get is meters.

Developer Response
Hello Batman2287, thanks a lot for your positive feedback! At the moment there is no option to change the units. But I will note it and check what I can do for the next updates. Kind regards
Change the units?
04/15/2024

Batman2287

This app is great. The only problem I have is it’s in meters. How can I make it feet or another unit? This is pointless if all we get is meters.
Developer Response 04/18/2024
Hello Batman2287, thanks a lot for your positive feedback! At the moment there is no option to change the units. But I will note it and check what I can do for the next updates. Kind regards
Great Developer & app
04/18/2024

Scaudio
Works flawlessly, handy toolGreat Developer supportPS- 3rd party Google data mines everything

Developer Response
Hello, that is a good point. Let me explain the usage of data. It is correct that we get some data, but only for monitoring."Location" is only about the country. Means - we see "100 users from US; 40 from France; 20 in Germany; etc.".We provide our apps in 11 different languages. The country data help us to see where the app is used and if some problems occur that might have something to do with language localization.Maybe that "device ID"-thing might be another scary factor. But this only shows the difference if the app was launched the first time or if users come back. This is only a pale numbers that helps us to understand if people just downloading, open once and say "yeah, remove that s*$t" or if there is a real use. Some information help us to understand that teachers and parents are using these apps too. At first we designed the apps only for pupils. But the data are only some simple numbers too like "40% are in age of 25-35; 20% in 36-45; etc".The rest are crashes and some things to check if the app works properly."Uncontrolled 3rd parties" - we use Firebase for this. In the end it is Google who is managing this, but they say they only monitor the data. That is the only information that we get.From our point of view we only use data to improve the service. But we use a 3rd party that is connected to Google. It is up to you if you trust Google.I hope I was able to provide some clarity. Kind regardsPs. Let me tell you that I nearly get the same information from my apple developer console. So yeah ... everything the same.----Thank you very much for updating your review. 🙏
Great Developer & app
04/18/2024

Scaudio

Works flawlessly, handy toolGreat Developer supportPS- 3rd party Google data mines everything
Developer Response 04/21/2024
Hello, that is a good point. Let me explain the usage of data. It is correct that we get some data, but only for monitoring."Location" is only about the country. Means - we see "100 users from US; 40 from France; 20 in Germany; etc.".We provide our apps in 11 different languages. The country data help us to see where the app is used and if some problems occur that might have something to do with language localization.Maybe that "device ID"-thing might be another scary factor. But this only shows the difference if the app was launched the first time or if users come back. This is only a pale numbers that helps us to understand if people just downloading, open once and say "yeah, remove that s*$t" or if there is a real use. Some information help us to understand that teachers and parents are using these apps too. At first we designed the apps only for pupils. But the data are only some simple numbers too like "40% are in age of 25-35; 20% in 36-45; etc".The rest are crashes and some things to check if the app works properly."Uncontrolled 3rd parties" - we use Firebase for this. In the end it is Google who is managing this, but they say they only monitor the data. That is the only information that we get.From our point of view we only use data to improve the service. But we use a 3rd party that is connected to Google. It is up to you if you trust Google.I hope I was able to provide some clarity. Kind regardsPs. Let me tell you that I nearly get the same information from my apple developer console. So yeah ... everything the same.----Thank you very much for updating your review. 🙏

We updated our privacy policy and improved parts of the app analytics to address privacy concerns.

Version 2.1.5

1d ago

Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics