Use Subscriber War Terminal App to Track Your YouTube Subscriptions Count
This post might be a bit strange because it is not about an app that you must have. Subscriber War is a python-based Terminal app that you can easily use to monitor your YouTube channel subscription counts.
Downloading Subscriber War
Subscriber War is not just free, it is also open-source and it works right from the command line. Download it from its Github page.
Mind you, you will have to create a (free) YouTube API key to work with the terminal app.
When the set-up is done, configure the channels you want to keep track of and assign the colors they will appear in in the terminal using the following function in the subWar.py file:
addUser(<NAME TO DISPLAY>,<CHANNEL ID>,<COLOR>)
Also, keep in mind that the channel ID is different from the channel username. Find your channel ID listed under your account settings.