Tools to simulate SaaS customer acquisition growth?

Guys, I'm looking for a tool where I can to user acquisition simulations and that would incorporate also the cost for each campaign, additionally to the desired outcome.

E.g. I spend $5000 in PPC, I can expect N.50 users and $XXX in MRR.

I know I can build this in Excel, however I was wondering if there was a nice looking tool for it (even if paid)?

Alternatively, feel free to recommend a template.

Thank you so much in advance.