Having multiple apps that serve the same purpose?

[Min George]

I have seen some people that have multiple apps that serve the same purpose. Someone can have as many as 6 photo editing apps on one smartphone. Why do people have many apps that do the same thing on one device?

 

[eLdavis]

For some it's possible there is a particular feature found in each apps that they can't find in one app.

 

[neku]

Many apps have some unique features which other apps do not have, so users install multiple apps to utilise or access these features which they may require.