How do you keep a track of followers on social media?

To keep track of social media followers the most important thing is to track your analytics using an app or tool (acc to your preference)

Analytic provide you day to day overall growth in followers.

If you are asking for Twitter, then I will suggest you the tool FollowerAudit!

It is the best Twitter analytics tool which provides followers growth stats, identifies unfollowers, fake followers and inactive followers. It will also provide you with detailed followers analytics.

The best tool I have used so far but the only drawback is it does not work for Instagram.

Lot of free tools available that can help you but if you can pay get subscription for more details along with followers tracking. With that premium account you can analysis better.

FollowersAnalysis is a Twitter analytics tool that can help you analyze followers of any (yours or public) Twitter account. It can help you analyze Twitter followers, even millions of them, with ease and provide valuable insights that help in developing effective Twitter marketing campaigns.

Key features of FollowersAnalysis,

• User follower/following analysis & report
• User tweet analysis and report
• Identify influencers
• Identify inactive followers
• Identify most engaging followers

Aside from these, there are numerous other metrics that are included in the analytical report

They do not follow a subscription model. You just have to pay for the data you need.

FollowersAnalysis can help you evaluate the Twitter follower quality of any public Twitter account. You can analyze and dissect the social media moves of your competitors, and use similar or improved strategies to increase your social media presence.