This integration works with the following versions of Salesforce that support connected apps: Enterprise, Unlimited, Developer, Performance, and Professional (only with API access). That said, be sure you are using a Salesforce edition that provides API access.
If you're unclear on your edition, be sure to speak with your Salesforce admin to find out before connecting. You can also refer to this Salesforce article to find out and reference to your Salesforce admin!
Note, a separate app is not needed for this particular integration. Keep in mind, the trial versions of Salesforce do not have API access.
The Salesforce Enrichment for Crunchbase Enterprise does offer an app. If you’re looking to fully enrich your Salesforce experience with automatic updates & full integration, talk to our Sales team!