Apollo and ZoomInfo both sell data about companies and the people who work there. For a small business, the bigger difference is how you buy and what comes with the data.
The short answer
Pick Apollo if you are a founder or a small team, you want to start for free, and you want to find people and email them from one tool.
Pick ZoomInfo if you run a larger sales team, you want buyer intent signals and call analysis next to the data, and you are ready for a sales call and a quote.
You may not need either at the start. A short list of the right people often beats a large database. See how to get your first 10 customers.
How you buy
Apollo is self-serve. As of October 2026, Apollo's pricing page lists a free plan and paid plans called Basic, Professional and Custom. Paid plans are charged per seat, and a calculator suggests a plan from the credits you expect to use. Monthly billing can be cancelled at any time. Annual billing costs less but runs for 12 months.
ZoomInfo sells through quotes. As of October 2026, ZoomInfo's pricing page shows no prices. It says the price depends on the features you pick, the number of licences and how many credits you use. Each export of a profile uses one credit.
For a team of one or two, that difference matters. You can try Apollo today. ZoomInfo starts with a conversation.
What comes with the data
Apollo pairs its data with tools to act on it:
- Email sequences sent from your own mailbox.
- A dialer for calls.
- CRM integrations, with more advanced ones on higher plans.
- AI features and call recording on the Professional plan.
ZoomInfo pairs its data with tools to decide who to call:
- Contact and company profiles, including direct dial and mobile numbers, on its sales plans.
- Buyer intent signals on the Copilot Advanced plan and above.
- Copilot, which uses AI to rank accounts.
- Chorus, its call recording and conversation analysis product.
In short, Apollo leans towards doing the outreach. ZoomInfo leans towards knowing who to reach and when.
The plans by name
As of October 2026:
- Apollo: Free, Basic, Professional and Custom, from the pricing page.
- ZoomInfo sales plans: Professional, Copilot Advanced and Copilot Enterprise. It also sells marketing plans, such as Marketing Demand, from the pricing page.
Credits, and why they matter
Both tools use credits, so the real cost depends on how many people you look up.
On Apollo, credits are shared across the team and given at the start of each billing cycle. Unused credits do not roll over. On ZoomInfo, credits are part of the quote.
Before you buy either, estimate how many new contacts you need each month. Then ask what that volume costs. A plan that looks cheap can cost more once you add credits.
Test the data yourself
Both companies make claims about their data. There is no neutral public test that compares them. The fairest check is your own:
- Pick 20 people whose details you already know. Customers are ideal.
- Look them up in each tool, on the free plan or trial.
- Count how many emails, job titles and phone numbers are right.
- Do the same for 20 people in the market you want to sell to, and send a few test emails to see how many bounce.
Twenty people will not prove much in general. It will tell you a lot about your own market.
Do not forget the rules
A database contact is still a person. In the US, the FTC's CAN-SPAM guide says the law has no exception for business email. In the UK, the ICO's business-to-business guidance explains when you can email company staff. Check the rules where your readers live.
How to decide
Ask yourself three questions.
- How many new people do I need each month? If it is under a hundred, start with a free plan.
- Do I need intent signals and call analysis? If not, you may be paying for features you will not use.
- Who will send the emails? If it is you, from your inbox, a tool with built-in sending saves a step.
Whatever you pick, the data only gets you to the inbox. What you write decides the reply. A good first email is short and sounds like a person. For other options, see Apollo.io alternatives.