The app will show your voice range and will also make an assumption about your singing voice and show who of the famous singers has a similar voice

For example:
A2-A4 - Baritone

Understanding the range helps in teaching with vocals, karaoke, and also to understand which songs suit you and which ones do not.

Vocal Range will help you to know how wide your vocal range is
And as it will show which of the famous singers voice is the same as you