That it’s success can’t be measured scientifically — yet.
If you do a web search for “tools” & “influencers” you’ll find thousands (if not millions) of tools.
Those tools are built by wonderful, sometimes idealistic people, all over the world. However, most of the tools are too general, somehow immature, and worse – inaccurate because they don’t calculate the real KPIs we need to evaluate SMI*… And the reason for that is that platforms such as Instagram, Twitter, TikTok, etc. cannot share the necessary data about their users without being blamed for violating user privacy.
The solution to assessing influencers is – therefore – a lot of manual investigation work, in addition (or instead of) using the tools.
And while we are there, here are the KPIs I recommend the most:
SMI* = Social Media Influencers