Pick Apollo.io if…
you want data and outreach in one tool at a known per-seat price.
PricingFree $0; paid plans $49, $79 and $119 per seat/mo (top tier min. 3 seats); Inbound add-on from $119/team/mo
Visit Apollo.io See pricingBoth are B2B contact databases reps use to find emails and direct dials. Apollo publishes per-seat prices and adds sequencing and inbound routing. Seamless.AI is a contact search engine with a Chrome extension and job-change alerts; sign-up is free and paid plans are quoted by sales.
you want data and outreach in one tool at a known per-seat price.
PricingFree $0; paid plans $49, $79 and $119 per seat/mo (top tier min. 3 seats); Inbound add-on from $119/team/mo
Visit Apollo.io See pricingyour reps mainly look up contacts from a Chrome extension, job-change alerts matter, and you are fine getting a quote for paid plans.
PricingFree sign-up; paid plans quoted by sales (pricing inquiry form)
Visit Seamless.AI See pricingApollo is the easier one to evaluate: a free plan and published prices. Both connect to HubSpot and Salesforce. Seamless.AI is worth testing on its free sign-up if lookups from the browser are the main job, but get the quote before you commit.
"Unknown" means we could not confirm it on the vendor's site, not that it is unavailable.
Swipe to compare both tools.
| Compare by | Visit Apollo.io | Visit Seamless.AI |
|---|---|---|
| What it is | B2B contact database with enrichment, sequencing, inbound routing and CRM enrichment. | B2B contact search engine for emails and direct dials, with a Chrome extension, job-change alerts and CRM enrichment. |
| Pricing | Free $0; paid plans $49, $79 and $119 per seat/mo (top tier min. 3 seats); Inbound add-on from $119/team/mo | Free sign-up; paid plans quoted by sales (pricing inquiry form) |
| Pricing model | Public pricing | Contact sales |
| Free plan | Yes | Yes |
| Free trial | Yes | Unknown |
| HubSpot | Yes | Yes |
| Salesforce | Yes | Yes |
| Last checked | 2026-10-18 | 2026-10-19 |
| Source | apollo.io | seamless.ai |
Prices as shown on each vendor's site on the "Last checked" date above. Vendors change prices often, so confirm before you buy.
Apollo.io: Buy the data. You can't DIY a contact database; you can DIY the CRM-enrichment workflow around Apollo's API.
Seamless.AI: Buy the data. You cannot DIY a contact database; you can DIY the enrichment workflow around its API in n8n.
Read the full build-vs-buy guide for Lead Routing & EnrichmentThe n8n Community Edition is free to self-host, and n8n has HubSpot, Salesforce and AI Agent nodes.
Apollo is the easier one to evaluate: a free plan and published prices. Both connect to HubSpot and Salesforce. Seamless.AI is worth testing on its free sign-up if lookups from the browser are the main job, but get the quote before you commit.
Apollo.io: yes. Free $0; paid plans $49, $79 and $119 per seat/mo (top tier min. 3 seats); Inbound add-on from $119/team/mo. Seamless.AI: no (contact sales). Checked 2026-10-18 on the vendors' pricing pages.
Apollo.io: HubSpot yes, Salesforce yes. Seamless.AI: HubSpot yes, Salesforce yes. "Unknown" means we could not confirm it on the vendor's site.
Apollo.io: Yes. Seamless.AI: Yes.
Apollo.io: Buy the data. You can't DIY a contact database; you can DIY the CRM-enrichment workflow around Apollo's API. Seamless.AI: Buy the data. You cannot DIY a contact database; you can DIY the enrichment workflow around its API in n8n.
B2B contact database with enrichment, sequencing, inbound routing and CRM enrichment.
B2B contact search engine for emails and direct dials, with a Chrome extension, job-change alerts and CRM enrichment.