Yes, FunnelFlux is a self-hosted software that you must install on your own server. Generally a $20/mo VPS will suffice.
We have a deployment manager that automates installation on our recommended providers, and will install FunnelFlux on any of these free of charge.
Our recommended providers are:
Vultr
Linode
DigitalOcean
We can assist with installation on other servers but do not recommend installing FunnelFlux in VPS cPanel environments, with other things hosted on the server.
Trackers are best put in a sandbox where their performance and requirements are not limited by, nor detrimentally impact other systems on the virtual server.