Apollo.io vs ZoomInfo
Apollo.io and ZoomInfo both pair a B2B contact database with outreach tools and both can be started free. Apollo.io lists fixed plan prices from USD 49 a month and states 240M contacts. ZoomInfo states 500M contacts and 100M companies and charges by usage credits. Teams wanting a known monthly price lean towards Apollo.io; teams chasing the widest database towards ZoomInfo.
Vendors can pay for visibility on this site; it never changes what we say about a product. How that works.
Choose Apollo.io ifyou want a listed monthly plan price, email sequencing included on every account, and a database of 240M contacts is enough for the markets you sell into.
Choose ZoomInfo ifthe size of the database decides it: ZoomInfo states 500M contacts and 100M companies, including 200M+ professionals outside North America, and you accept usage-based credits.
Apollo.io and ZoomInfo side by side
| Apollo.io | ZoomInfo | |
|---|---|---|
| Our sales intelligence software rank | #2 of 11 | #1 of 11 |
| Established in | United States | United States |
| Pricing | Free plan; Basic USD 49/month and Professional USD 99/month on monthly billing, published | Free plan (ZoomInfo Lite); paid plans on usage-based credits, quoted |
| Free tier | Yes | Yes |
| Open source | — | — |
| Self-hostable | — | — |
Both are reviewed in full in our sales intelligence software ranking: Apollo.io and ZoomInfo.
Where they differ
Apollo.io 1 · ZoomInfo 1 · open 3- 01
Contacting the people you find
Apollo.io says email campaigns are included on every account, with sequencing named from its Basic plan and a parallel dialer among its features; free accounts can connect Gmail only. ZoomInfo is no longer a database alone: its sales product lists multi-touch cadences through a phone dialer and email tool, plus conversation intelligence. Both cover outreach, so neither forces a second product.
Depends on the buyer
- 02
Breadth of the contact database
Each vendor states its own figures. ZoomInfo's about page gives 500M contacts and 100M companies, of which 34M+ companies and 200M+ professionals sit outside North America. Apollo.io's site gives 240M contacts and 30M companies. The counting methods are each vendor's own, but on the published numbers ZoomInfo claims roughly twice the contacts and three times the companies.
Edge: ZoomInfo
- 03
What you can learn about price before a sales call
Apollo.io's pricing page carries fixed figures: a free plan with no time limit, Basic at USD 49 a month and Professional at USD 99 a month on monthly billing, with a discount for paying annually and a Custom tier through sales. ZoomInfo describes its pricing as free to start with consumption credits based on usage, and offers a permanent free plan, ZoomInfo Lite, without a credit card.
Edge: Apollo.io
- 04
How credits behave
On Apollo.io, credits are pooled across the team, granted at the start of each billing cycle and expire unused at the end of it; admins can cap credits per user and buy recurring add-on credits. ZoomInfo states that its cost follows consumption credits based on usage. A team with uneven monthly volume should model both against its own reveal numbers.
Depends on the buyer
- 05
Security certifications and contracting entity
The two are level on named standards. Apollo.io's privacy policy says it is certified under ISO 27001 and SOC 2, and its terms name ZenLeads Inc., trading as Apollo.io, with an address in Covina, California. ZoomInfo's security overview cites an ISO 27001 management system and a SOC 2 attestation; the company is ZoomInfo Technologies LLC, headquartered in Vancouver, Washington.
Depends on the buyer
When neither fits
Both products look up people you have never met. If your real gap is knowing which companies are already browsing your website, neither is built for it: Leadfeeder and Leadinfo identify site visitors, with published pricing and, in Leadfeeder's case, a free entry tier.
Apollo.io or ZoomInfo: questions
4 answersIs Apollo.io cheaper than ZoomInfo?
Apollo.io lists Basic at USD 49 a month and Professional at USD 99 a month on monthly billing, with a free plan.
ZoomInfo says it is free to start and then charges consumption credits based on usage, so its cost depends on volume. Compare both against your own monthly number of revealed contacts.
Do I need a separate outreach tool with Apollo.io or ZoomInfo?
Not necessarily with either. Apollo.io includes email campaigns on every account and lists a parallel dialer. ZoomInfo's sales product lists multi-touch cadences with a phone dialer and email tool. Apollo.io also states integrations with Outreach and SalesLoft if you already run one of those.
Which has the bigger database, Apollo.io or ZoomInfo?
On each vendor's own figures, ZoomInfo: it states 500M contacts and 100M companies, while Apollo.io states 240M contacts and 30M companies. Totals say little about accuracy in your territory, so run the same 50 target accounts through both free plans and compare what returns.
Do Apollo.io and ZoomInfo have free plans?
Yes. Apollo.io has a free plan with no time limit, on which only Gmail accounts can be connected for sending. ZoomInfo offers ZoomInfo Lite, a permanent free plan that needs no credit card, and separately a free trial of the full platform.
Sources
Checked 30 September 2026- Apollo.io pricing page: Apollo.io plan prices, free plan, credit rules, 240M contacts and 30M companies, email campaigns on every account.
- Apollo.io privacy policy: Apollo.io ISO 27001 and SOC 2 certification.
- Apollo.io terms of service: ZenLeads Inc. trading as Apollo.io with a Covina, California address.
- ZoomInfo about page: ZoomInfo 500M contacts and 100M companies, usage-based credits, free plan, headquarters and legal name.
- ZoomInfo Sales product page: ZoomInfo cadences with phone dialer and email tool.
- ZoomInfo Lite page: ZoomInfo Lite as a free offering.
- ZoomInfo security overview: ZoomInfo ISO 27001 management system and SOC 2 attestation.