Is there any quota in Android Geocoder Class?

I just want to launch my application which is using Reverse Geocoding with the help of Geocoder Class but I want to ask whether this cause any problem further?

- Like do I have to add API KEY in my project?
- Limitations in Geocoder Class (quota)?

I have called reverse geocoding more than 4000 times (Using GPS Spoofing App) in an hour from the same device but its still giving me the result. Are there no limitations to use Geocoder class?

What's the difference between Google Geocoding API vs Geocoder Class in Android?

Waiting for your response.....