Comparison · Data enrichment
Apollo.io vs ZoomInfo: B2B data and prospecting
The short answer
Both sell B2B contact and company data with enrichment, website visitor tracking and CRM integrations. ZoomInfo is the enterprise go-to-market platform, adding buyer intent, conversation intelligence, chat and data-as-a-service, sold through sales-led contracts with a free trial. Apollo.io combines a large database with built-in email sequences and a dialer and offers a free plan, so small teams can start without a contract. Small and mid-size teams usually start with Apollo; larger sales organisations with RevOps support often evaluate ZoomInfo.
On this page 3 sections
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Side by side
| Apollo.io | ZoomInfo | |
|---|---|---|
| Database | 240M+ contacts, 30M+ accounts (vendor figures) | Company and contact database (vendor does not publish a single figure on its homepage) |
| Enrichment | Waterfall enrichment | CRM enrichment and data-as-a-service |
| Outreach | Built-in email sequences and dialer | Sales automation for phone and email |
| Intent and visitor tracking | Website visitor tracking | Buyer intent and website visitor tracking |
| Other | Deliverability tools | Conversation intelligence, website chat, ABM, AI agent |
| Getting started | Free sign-up with credit limits | Free trial; sales-led contracts |
Choose Apollo.io if
- You are a small team that wants data and outreach in one place.
- You want to start free and pay as usage grows.
Evaluate ZoomInfo if
- You run a large sales or marketing operation and want intent data, chat and conversation intelligence from one vendor.
- You have RevOps capacity to manage a platform and a contract.
Visit ZoomInfo to request its free trial.
Both also identify companies visiting your site; if that is the main need, compare Leadfeeder vs Apollo.io.
Based on each vendor’s published features as of October 2026. We have not tested these products in a live account. Product names are trademarks of their owners.