Apollo.io vs ZoomInfo

Updated November 2026 · AppBreakup editorial

Apollo.io

B2B contact database and outbound sales platform with built-in email sequences and dialer.

Free plan + paid

Visit Apollo.io Apollo.io profile

ZoomInfo

Enterprise B2B contact, company and buyer-intent data platform for sales and marketing teams.

Paid

Visit ZoomInfo ZoomInfo profile

The short answer

Apollo.io suits startups and small sales teams that want contact data plus email sequences and a dialer in one affordable tool, with a free plan to start. ZoomInfo suits mid-size and enterprise teams that need broad B2B coverage, org charts and buyer-intent signals, bought on annual contracts. The biggest difference is self-serve, all-in-one prospecting versus enterprise-grade data depth.

Apollo.io or ZoomInfo: our take

Apollo.io pairs a database of 240M+ contacts and 30M+ accounts with the tools to act on it. Reps filter prospects, reveal emails and phone numbers, then send them through email sequences, a built-in dialer or a CRM sync without leaving the app. A Chrome extension shows contact details while browsing, enrichment keeps CRM records current, and newer AI assistants draft outreach and prioritise accounts. ZoomInfo is primarily a data and intelligence platform. It offers contact and company profiles, firmographic and technographic filters, org charts, website-visitor tracking and real-time buyer-intent signals, with Copilot tiers adding AI account summaries and suggested talking points. Its data flows into Salesforce, HubSpot and marketing tools, and it has a Chrome extension and a mobile app.

The buying experience is very different. Apollo has a free plan with no time limit and published paid tiers far cheaper than older enterprise vendors. Usage runs on credits that reset each billing cycle and do not roll over, the free plan only connects Gmail inboxes, and API access is limited to custom plans. ZoomInfo has no free plan, only a trial of its professional package, no published prices, and usually annual contracts negotiated through sales, which is a big commitment for small teams. In return it brings broader coverage, more signals, and ISO 27001 and SOC 2 Type II certifications that enterprise security reviews often require.

Data quality varies by region and industry with both vendors, so testing each against your own target market is worthwhile.

Choose Apollo.io if you are a startup or small team doing outbound and want data and outreach in one inexpensive tool you can start using today. Choose ZoomInfo if you run a larger sales or marketing operation that needs intent data, org-level detail and enterprise compliance, and can handle an annual contract.

Choose Apollo.io if…

Startups and small sales teams that want contact data and outreach sequencing in one affordable tool
You want a free option (ZoomInfo is paid only)
Free plan with no time limit for light prospecting
Data, email sequences and dialer in one product

Choose ZoomInfo if…

Mid-size and enterprise sales and marketing teams that need broad B2B data and intent signals
You need iOS and Android, which Apollo.io doesn't list
Broad contact and company coverage with org-level detail
Buyer-intent and website-visitor signals

What is Apollo.io?

Apollo.io combines a large B2B contact and company database with the tools to act on it. Sales reps search for prospects by role, company size, industry and other filters, reveal verified emails and phone numbers, and then send them through email sequences, a dialer or a CRM sync without leaving the app. A Chrome extension shows contact details while browsing professional profiles and company sites, and enrichment keeps existing CRM records up to date. Newer features add AI research assistants and agents that draft outreach and prioritise accounts. Apollo is popular with startups and small sales teams because it has a free plan with no time limit and paid tiers far cheaper than older enterprise data vendors; usage is metered in credits that reset each billing cycle and don't roll over. It runs in the browser, with the Chrome extension and integrations for Salesforce, HubSpot and the major email providers. Data quality varies by region and industry, as with every vendor in this space.

What is ZoomInfo?

ZoomInfo is one of the largest B2B data providers, used by sales, marketing, recruiting and RevOps teams to find decision-makers and research accounts. Its platform covers contact and company profiles, firmographic and technographic filters, org charts, website-visitor tracking and buyer-intent signals that flag companies researching a topic. The Copilot tiers add AI-generated account summaries, prioritised target lists and suggested talking points, and the data flows into Salesforce, HubSpot and marketing tools, or through a Chrome extension and mobile app. ZoomInfo sells mainly to mid-size and large companies on annual contracts, with pricing quoted by sales rather than published, and a free trial for the professional package. It runs in the browser. Compared with self-serve tools like Apollo or Lusha it costs more and takes longer to buy, but offers broader coverage, more signals and enterprise compliance certifications such as ISO 27001 and SOC 2.

Side by side

Attribute	Apollo.io	ZoomInfo
Pricing	Free plan + paid	Paid
Open source	No	No
Self-hostable	No	No
Platforms	Web, Browser extension	Web, Browser extension, iOS, Android
Best for	Startups and small sales teams that want contact data and outreach sequencing in one affordable tool	Mid-size and enterprise sales and marketing teams that need broad B2B data and intent signals
Status	Active	Active

Verified facts, compared

Facts both apps publish, checked on each vendor's own site.

Fact	Apollo.io	ZoomInfo
Integrations	Salesforce, HubSpot, Outreach and more	HubSpot, Salesforce and more