What is the Contact To Excel application, how does it work?

According to the introduction of Ajay Khatri, Contact To Excel is a Tools app on the Android platform. There is currently a 4.4 version released on Sep 29, 2019, you can see the details below.

Features:
- Export Any Number of Contacts to Excel , PDF, CSV, VCF Files.
- Import Any Number of Contacts from Excel (xlsx format only)
- No Limitations It is Full Version App
- App does not import contacts from vcf, csv and pdf files.