Hi friend if you are interested about world religion and world religious population then this apps is for you. With this app you will know,
World population,
The world's female and male population,
You can also find out how many followers there are in any religion in the world.
E.g.,
Christian, Muslim, Hindu, Buddhist,
Judaism, folk religion, and also how many people's religiously unaffiliated.
Here different information is given to each of the different continents and different countries so that you can easily know about the population and religious population of a particular continent or country. This way, you will be able to identify the flag of each country through the apps. And in this application the different religions are briefly discussed so that you can get an initial idea about each religion.

Some information has been collected in this apps from the given site.
https://countrymeters.info/en