Apollo and ZoomInfo both sell B2B contact data with prospecting tools on top, but they are bought in opposite ways. Apollo publishes its prices, from $49 per seat per month on annual billing, and bundles email sequences and a dialer. ZoomInfo publishes no price and sells through a sales process; Vendr's contract data puts the median buyer at $33,500 a year. ZoomInfo declares the larger database. Every number below was read on September 28, 2026.
Disclosure first: we are Overloop, and we sell contact data and outreach, so we compete with both Apollo and ZoomInfo. Every price and figure below was read on the vendors' official pages on September 28, 2026. Where one of them is the better choice for your team, we say so.
Apollo vs ZoomInfo: the short answer
Choose Apollo if you want to buy today with a card, read the price before you talk to anyone, and get data, email sequences and calling in one seat. At list price, an Apollo Basic seat works out to about $0.16 to $0.21 per phone number if you spend every credit on phones.
Choose ZoomInfo if you are an enterprise revenue team that wants the largest declared database, intent data and CRM governance, and you can run a procurement cycle. ZoomInfo declares 500M+ professional profiles and 135M+ direct dial numbers; Apollo declares 240M contacts. ZoomInfo does not publish what a phone number costs.
Choose Overloop if the number has to go straight into outreach. Overloop, our product, reveals a phone number for 5 credits, charged only when one is found, and runs the email and LinkedIn sequence from the same prospect record. Plans start at $69 per user per month with 250 credits.
Apollo vs ZoomInfo side by side
| Criterion | Apollo | ZoomInfo | Overloop (our product) |
|---|---|---|---|
| Entry price | Free plan; Basic $49 per seat per month billed annually, $65 monthly | Not published; quote from sales. Vendr median $33,500 a year across 1,573 purchases | Starter $69 per user per month with 250 credits; Growth $99 with 500 credits |
| Phone numbers on the entry paid plan | Up to 312 a month per seat (2,500 credits, 8 per number) | Not published | Up to 50 a month on Starter (250 credits, 5 per number) if no credits go elsewhere |
| Price per phone number | About $0.16 (annual) to $0.21 (monthly) on Basic | Not published | 5 credits, only on a match (see pricing) |
| When a number is charged | 8 credits per verified personal number accessed; HQ and corporate numbers are free, per Apollo's help center | Not published | 5 credits, only when a number is found; an empty search uses no phone-search credits |
| Coverage the vendor declares | 240M contacts and 30M companies | 500M+ professional profiles, 300M+ verified business emails, 135M+ direct dials, 122M+ companies | Own B2B prospect database for sourcing; phone reveal queries several sources in turn |
| Accuracy claim by the vendor | None found on the pages we read | 87% mobile number accuracy, stated on its data page | No phone match rate published |
| Outreach built in | Email sequences on every plan, US dialer with credits, Advanced Dialer add-on | Engagement features sold as part of its platform; editions quoted | Email and LinkedIn sequences from the same prospect record; no built-in dialer |
| Integrations named | Salesforce, HubSpot, Pipedrive, Outreach, Salesloft | Salesforce, HubSpot, Marketo, Outreach, Snowflake | CRM integrations whose scope varies by plan; Chrome extension for LinkedIn |
| How you buy | Self-serve, 14-day trial on Basic and Professional | Sales-led, free trial offered through its site | Self-serve, per user |
Pricing: a price list vs a quote
Apollo (Apollo pricing, September 28, 2026) lists four plans. Free at $0 with 900 credits per seat per year. Basic at $49 per seat per month billed annually with 30,000 credits per seat per year, or $65 billed monthly with 2,500 credits a month. Professional at $79 annually with 48,000 credits a year, or $99 monthly with 4,000 a month. Organization at $119 per seat per month, annual only, with a 3-seat minimum and 72,000 credits a year. The page shows annual billing as a 24% saving.
ZoomInfo does not publish prices. Its pricing page sends visitors to sales; on September 28, 2026 the page served an anti-bot check to our browser, so we cite no figure from it. The best public benchmark is procurement data: Vendr ZoomInfo pricing data reports a median of $33,500 a year across 1,573 purchases, with a range of $7,213 to $155,820. Treat that as a third-party estimate of negotiated contracts, not a list price.
Cost per phone number
Seat prices hide what matters for calling: how much one mobile number costs. We divided each plan's price by the numbers its credits can buy.
| Tool | Plan | How we computed it | Price per phone number |
|---|---|---|---|
| Apollo | Basic, monthly | $65 a seat, 2,500 credits a month, 8 credits per number = 312 numbers | about $0.21 |
| Apollo | Basic, annual | $49 a seat a month, 30,000 credits a year (2,500 a month), 8 credits per number | about $0.16 |
| Apollo | Professional, monthly | $99 a seat, 4,000 credits a month = 500 numbers | about $0.20 |
| ZoomInfo | All editions | No price or credit cost published | Not published |
| Overloop | Starter or Growth | Phone reveal draws on the plan's shared credits | 5 credits, only on a match (see pricing) |
Apollo's credits also pay for emails (1 credit), enrichment (up to 9 credits a record) and dialer usage, so a real month buys fewer phone numbers than the ceiling above. Overloop's per-number price is set in credits; see the pricing page for the plan value.
Data and coverage: what each vendor declares
ZoomInfo's ZoomInfo data page declares 500M+ professional profiles, 300M+ verified business emails, 135M+ direct dial numbers and 122M+ company records. It splits coverage by region: 157.8M+ contacts and 77.7M+ mobile numbers in North America, 66M+ contacts and 18.5M+ mobile numbers in Europe. It also states 87% mobile number accuracy. That is ZoomInfo's own figure, not an independent audit.
Apollo declares 240M contacts and 30M companies on its site (Apollo pricing). Its help center says Apollo charges credits to access a verified personal phone number and does not charge for HQ or corporate numbers (Apollo help center: access a prospect's phone number). Apollo also runs waterfall enrichment, checking connected data providers in order when its own data has no answer.
Neither vendor publishes an independent accuracy audit that covers both. If mobile numbers are the job, run the same 100 prospects from your own market through both trials and count connected calls, not filled cells.
Prospecting and outreach
Apollo is a data platform with a sales engagement tool attached. Every plan includes email campaigns; paid plans connect Microsoft and other providers, and Professional adds unlimited sequences with A/Z tests. The dialer is US only and uses credits; an Advanced Dialer add-on at $119 per team per month on annual billing adds international, parallel and local-presence calling.
ZoomInfo is sold as a go-to-market platform: data, intent signals from 4,500+ topics, CRM enrichment and engagement tools, packaged into editions that sales quotes. Its about page says it serves 35,000+ companies (ZoomInfo about page). The buying unit is a contract, not a seat you add on a Tuesday.
Integrations
Apollo's pricing table names Salesforce, HubSpot and Pipedrive as CRM integrations plus Outreach and Salesloft; its FAQ adds Marketo and Sendgrid. ZoomInfo's data page names Salesforce, HubSpot, Marketo, Outreach and Snowflake. Both enrich CRM records; ZoomInfo leans on data-warehouse delivery for large accounts, Apollo on its own sequences.
Verdict by team type
- Founder or team of 1 to 5 sellers: Apollo. A published price, a free plan and phone numbers at about $0.16 to $0.21 each at list price.
- Mid-market team calling North America: run both trials. ZoomInfo's declared mobile coverage is largest there; Apollo's price is readable today.
- Enterprise RevOps with procurement: ZoomInfo, if intent data, governance and warehouse delivery justify a contract that Vendr's buyers put at a median of $33,500 a year.
- Team selling into Europe: check coverage in your countries during the trial. ZoomInfo declares 18.5M+ European mobile numbers against 77.7M+ in North America.
- Team that wants the number on the sequence record: Overloop, if you want the revealed phone number and the email and LinkedIn sequence on one prospect record. 5 credits per revealed number, only on a match. Overloop has no built-in dialer.
If neither fits, our Apollo alternatives guide covers the rest of the field.
A third option: Overloop
Overloop is our product, so weigh this section with that in mind. It is not a pure data vendor. Overloop finds the work email and the phone number of a prospect and runs the email and LinkedIn sequence from the same record, so the number does not have to travel through a CSV before anyone uses it.
For phone data, the Overloop phone number finder queries several data sources in turn and stops at the first match. A revealed number costs 5 credits, charged only when a number is found; an empty search uses no phone-search credits. Overloop finds emails with its email finder and sources new prospects from an advertised 450M+ B2B contact database. Credits are one shared meter across sourcing, email finding and phone reveal. Starter is $69 per user per month with 250 credits and Growth is $99 per user per month with 500 credits; the credit rules sit on the pricing page.
Where we lose: if you want the largest declared database, ZoomInfo is bigger. If you want a US parallel dialer, Apollo sells one. Overloop has no built-in dialer, so revealed numbers feed call tasks and CSV exports. We do not publish a phone match rate, because a rate measured on our lists would not predict yours. Run the reveal on 50 prospects you already know before you decide.
Want the phone number inside the sequence?
Overloop reveals phone numbers for 5 credits each, only when one is found, and sends the email and LinkedIn sequence from the same prospect record.
See the phone number finderSee plans and creditsHow this comparison was made
This is desk research, not a lab test. On September 28, 2026 we opened each vendor's official pricing page and the data pages linked below as a logged-out visitor, rendered them in a browser, and recorded plan prices, credits and the credit cost of a phone number. Price per number assumes every credit on the plan goes to phone numbers, which is the ceiling, not a typical month: emails, exports and other features draw on the same credits at most vendors. Coverage figures are what each vendor declares about its own data. We did not run a paid trial of either tool and we do not rank data accuracy, because no independent audit covering both was available. ZoomInfo's pricing page blocked our automated browser on September 28, 2026, which is why its price comes from Vendr. Methodology notes for the blog sit on our methodology page.
- Apollo pricing
- Apollo help center: access a prospect's phone number
- ZoomInfo pricing
- ZoomInfo data page
- ZoomInfo about page
- Vendr ZoomInfo pricing data
Frequently asked questions
Is Apollo better than ZoomInfo?
It depends on how you buy. Apollo is better for small and mid-size teams that want a published price, a free plan and sequences in the same seat: Basic is $49 per seat per month on annual billing, as read on September 28, 2026. ZoomInfo is better for enterprise teams that want the largest declared database, intent data and governance, and can run a procurement cycle.
Is Apollo cheaper than ZoomInfo?
At published prices, yes, because ZoomInfo publishes none. Apollo lists $49 to $119 per seat per month on annual billing. Vendr's contract data puts ZoomInfo's median buyer at $33,500 a year across 1,573 purchases. Per phone number, an Apollo Basic seat works out to about $0.16 to $0.21 if every credit goes to phones.
Which has more phone numbers, Apollo or ZoomInfo?
ZoomInfo declares more: 135M+ direct dial numbers and 500M+ professional profiles on its data page, including 77.7M+ mobile numbers in North America and 18.5M+ in Europe. Apollo declares 240M contacts and 30M companies. Both are vendor figures; test them on your own market.
How much does a phone number cost in Apollo?
Accessing a phone number costs 8 credits in Apollo's current credit system. Basic includes 2,500 credits a month, so up to 312 numbers: about $0.21 each at $65 monthly or $0.16 at $49 on annual billing. HQ and corporate numbers are free, per Apollo's help center.
Is there anything better than ZoomInfo?
For a small team, a tool with a published price is usually a better fit than a ZoomInfo contract: Apollo, Lusha or Kaspr for self-serve data, Cognism for European mobile data on a quote. If the number has to go straight into a sequence, Overloop reveals phone numbers for 5 credits each, only when one is found.
Can I use Apollo and ZoomInfo together?
Yes, and some teams do: ZoomInfo as the system of record for data and CRM enrichment, Apollo for sequences. You then pay twice for overlapping data. Before stacking them, check which one actually fills the phone numbers you call.