ZoomInfo vs Apollo.io
Independent comparison — features, pros, cons, pricing and rankings.
Who each tool serves best — and when to pick the other one.
Sales and marketing teams in mid-market or enterprise companies needing accurate B2B contact data for prospecting and CRM enrichment.
- You need detailed and verified B2B contact and company information for sales outreach.
- You want to enrich your CRM with accurate prospect data to improve targeting.
- Your team requires scalable lead generation tools integrated with sales workflows.
Small businesses or freelancers with limited budgets who require extensive free features or simple contact lists.
- You need a fully free tool with extensive features and no usage limits.
- Free-tier limits are a blocker for your prospecting volume or data needs.
- You require a simple contact list without advanced data enrichment or insights.
The accuracy and comprehensiveness of B2B contact and company data.
Sales and marketing teams needing a comprehensive platform for lead generation, prospecting, and outreach automation.
- You need a large, searchable database of business contacts and companies.
- You want to automate outreach sequences and track engagement metrics.
- Your team requires integration with common sales and marketing tools.
Organizations requiring highly specialized CRM features or those with limited budgets that cannot accommodate paid plans.
- You need a full-featured CRM with deep customization and pipeline management.
- Free-tier limits are a blocker for your lead generation volume needs.
- You require guaranteed 100% data accuracy and real-time updates.
The breadth and accuracy of its contact database combined with automation capabilities.
A canonical comparison across capabilities common to this category. Vendor-specific extras appear below in "Highlighted Features".
| Capability | ZoomInfo | Apollo.io |
|---|---|---|
|
Free Tier Available
Usable without payment (with usage limits)
|
✓ | ✓ |
| Feature | ZoomInfo | Apollo.io |
|---|---|---|
| Contact Database | Access to millions of verified B2B contacts | Access to millions of business contacts and companies |
Each tool's marketing-listed features. Where a feature appears under one tool but not the other, it usually reflects how the vendor describes their product — not a definitive capability gap.
- Company Profiles — Detailed company information and insights
- CRM Integration — Sync data with popular CRM platforms
- Intent Data — Identify prospects showing buying signals
- Advanced Search — Filter leads by multiple criteria
- Email Sequencing — Automate multi-step outreach campaigns
- Advanced Filtering — Filter contacts by firmographics, technographics, and behavior
- Integrations — Connect with CRMs and marketing tools
- Analytics Reporting — Track campaign performance and engagement metrics
- Comprehensive and accurate B2B data
- Strong CRM and sales tool integrations
- Regularly updated and verified contacts
- User-friendly interface for prospecting
- Scalable for large sales teams
- Large, frequently updated contact database
- Robust email sequencing and automation
- Integrates with popular sales and marketing tools
- User-friendly interface for experienced users
- Detailed analytics and reporting
- Free plan is very limited in features and data access
- Pricing is not transparent and can be costly for small businesses
- Data accuracy varies by geography and industry
- Steep learning curve for new users
- No public API for custom integrations
- B2B lead generation
- Sales prospecting
- CRM data enrichment
- Market research
- Account-based marketing
- Lead generation for B2B sales teams
- Automated email outreach campaigns
- Market research and prospect profiling
- Sales pipeline acceleration
- Data enrichment for CRM systems
Natural languages each tool generates and understands. Primary languages are listed first.
What each tool can accept (input) and produce (output) — text, image, audio, video, code.
ZoomInfo offers a free tier with limited access and paid plans that scale based on data volume and features, typically suited for mid-market and enterprise customers.
-
Free
Free
Offers a free plan with limited features and paid subscriptions that unlock advanced data access and automation capabilities.
-
Free
Free -
Basic
popular
$39.00/mo -
Professional
$79.00/mo
Regulatory frameworks each tool claims compliance with (HIPAA, SOC 2, GDPR, etc.).
Third-party audits and certifications that verify security controls.
No certifications listed.
Vendor-published numbers each tool highlights — usage scale, breadth, and operational stats. Different tools track different metrics, so direct row-by-row comparison usually isn't meaningful.
- Database Size 100M+ contacts
- Contacts Available 200M+ contacts
- Email Deliverability High
Who each tool is positioned for — primary audience first.
How you can reach support — email, live chat, phone, community, docs.
- Email primary
- Email primary
How each tool is classified in the Volvenix catalog.
These vocabulary domains are managed in our catalog but not yet exposed at the tool level. We're tracking them for future expansion of this comparison.
- Encryption Types — AES-256, ChaCha20, RSA-2048, and similar at-rest/in-transit cipher families.
- Encryption Contexts — where encryption is applied (data at rest, in transit, end-to-end).
- Plan-tier Model Mapping — which AI models are available on which pricing tier (currently only the model list is tracked, not the per-plan availability).
- What is this tool?
- ZoomInfo is a platform providing detailed B2B contact and company data for sales and marketing teams.
- How much does it cost?
- ZoomInfo offers a free tier with limited features; paid plans vary and are typically priced for mid-market and enterprise users.
- Does it have a free plan?
- Yes, ZoomInfo offers a free plan with limited access to contact data and basic search features.
- What integrations does it support?
- ZoomInfo integrates with major CRM platforms and sales tools, though specifics depend on the paid plan.
- Who is it best for?
- It is best suited for sales and marketing teams in mid-market to enterprise companies needing accurate B2B data.
- What is this tool?
- Apollo.io is a sales engagement platform offering a large contact database and outreach automation for sales and marketing teams.
- How much does it cost?
- Apollo.io offers a free plan with limited features and paid subscriptions starting around $39 per month.
- Does it have a free plan?
- Yes, Apollo.io provides a free plan with basic access to contacts and outreach tools.
- What integrations does it support?
- Apollo.io integrates with popular CRMs and marketing platforms, though no public API is available.
- Who is it best for?
- It is best suited for sales and marketing teams needing comprehensive lead generation and outreach automation.
| Info | ZoomInfo | Apollo.io |
|---|---|---|
| Pricing | Freemium | Freemium |
| Category | Sales AI | Sales AI |
| Deployment | Cloud | Cloud |
| Learning Curve | Intermediate | Intermediate |
| Free Plan | ✓ | ✓ |
| AI Agent | ✗ | ✓ |
| Autonomy | Assistant | Assistant |
| Risk Tier | Medium | Medium |
ⓘ How Volvenix scores work
Scores are computed by Volvenix — not supplied by the vendors, and not third-party benchmark results. Each 0–10 dimension (Overall, Features, Usability, Support, Pricing) is a directional estimate aggregated from catalog signals — editorial cataloguing, content depth, engagement, and provider-reputation indicators — so treat them as a starting point, not a lab result.
Confidence reflects how complete the underlying data is for both tools; lower confidence means fewer signals were available, not a worse tool. We never accept payment for rankings or scores. More about how Volvenix works →