Why does HubSpot refer Left Hook
to potential App Partners?


Our Experience

Left Hook has built six HubSpot apps for our SaaS clients available in the HubSpot App Marketplace. These apps have a wide range of features, including syncing large data sets, inserting timeline events, and adding custom actions to the HubSpot CRM UI.

Example HubSpot App Marketplace Listings:

FreshBooks (click to see video demo)

FastSpring IQ



Relevant Blog Posts:

Left Hook Presents at HubSpot Developer Day

The Hubspot Partner Ecosystem: Early Observations from a Hubspot Developer


Our Technology Approach

Left Hook builds new integrations on Frigg, our open source framework for accelerating development of direct/native integrations.

Frigg by Left HookFrigg is a middleware tool that is both free to use and free to modify under the MIT license. Frigg leverages serverless technology (i.e. AWS Lambda or equivalent) and can be hosted on your own cloud infrastructure accounts.

All proprietary code is "owned" and controlled by your company on your repositories, for long-term maintainability and cost savings.

Frigg ships with a pre-built HubSpot connector that manages authentication and many existing HubSpot CRM and Marketing Hub API features. The API Module is easily extendible to your common use cases.

Frigg is not a SaaS product, and it is definitely not an embedded iPaaS like or Alloy. Learn more about our open source approach to building HubSpot apps.

Typical Cost Range

A typical HubSpot CRM app costs between $20,000 to $50,000 USD in one-time development fees.

Let's chat to get into the details.

Delivery Speed

Once we have a clear plan to execute (including features, phases, budget, and devops/infrastructure), a new integration can often be ready for beta users within a few weeks.

Let's chat to get into the details.