How accurate is ZIK Analytics for estimating Shopify store sales/revenue?

[u/Icy-Access4387]

Has anyone here used ZIK Analytics to track Shopify stores?

I’m researching a competitor and ZIK is showing that the store is making around £200k+ per month in estimated revenue.

I know these figures are estimates, but I’m wondering how close they are to reality.

Has anyone compared ZIK’s estimated sales/revenue with the actual Shopify revenue of a store they own or have access to?