Subscribers Counter is a free Android app developed by Luiz Santos that allows users to track the number of subscribers of a YouTube channel in real-time. With a simple search by channel name or link, users can select channels from the list and view the total number of subscribers, posted videos, and total views. The app also features a favorites list, where users can add channels to follow their subscribers' numbers.

The interface of Subscribers Counter is clean and simple, making it easy to use without any tutorials. Additionally, the app comes with a widget that can be positioned on the smartphone's screen for easier access. The widget updates the number of subscribers of the selected channel every 30 minutes.

A new feature has been added to the app, which allows users to compare channels and follow the difference between the number of subscribers. Users can also compare their own channel with others. Furthermore, the app is multilingual, currently supporting English, Portuguese, Spanish, and more. It is important to note that all the information used by the application is public.

In conclusion, Subscribers Counter is a useful app for YouTube content creators to track their subscribers' numbers in real-time. Its simple design and easy-to-use interface make it a great tool for users who want to monitor their channels' growth.