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CRM · head to head

Apollo.io vs Seamless.AI

Apollo.io logo

Apollo.io

CRM

Revenue intelligence platform

From
Free
Rated
-
Full reviewWebsite
Seamless.AI logo

Seamless.AI

CRM

Sales lead search engine for finding contact and company data

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Apollo.io everything is metered in credits, and the free Starter plan runs on them too, so prospecting volume is capped rather than the feature set; Seamless.AI pro and Enterprise pricing is not published and requires contacting sales.
  • They diverge on capability: Apollo.io covers Contact database, Seamless.AI covers Contact search.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Apollo.io and Seamless.AI actually diverge.

Attributes where Apollo.io and Seamless.AI differ
AttributeApollo.ioSeamless.AI
Pricing modelsubscriptionfreemium
PlatformsWebweb, api
Founded2020Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (CRM).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Apollo.io

  • Contact database
  • Email finder
  • Lead search
  • Automation
  • Engagement tracking
  • Reporting
  • Salesforce
  • HubSpot

Only in Seamless.AI

  • Contact search
  • Real-time search engine
  • Job change alerts
  • Buyer intent data
  • CRM and API integrations
  • Enterprise security

What people use each for

The jobs each tool is most often brought in to do.

Apollo.io

  • Sales prospecting and lead generationnot Seamless.AI
  • Contact database management for sales teamsnot Seamless.AI
  • Email outreach and workflow automationnot Seamless.AI

Seamless.AI

  • B2B sales teams building prospecting listsnot Apollo.io
  • Finding verified emails and phone numbers for outreachnot Apollo.io
  • Tracking job changes among target contactsnot Apollo.io
  • Identifying accounts showing buyer intentnot Apollo.io

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Apollo.io

  • Everything is metered in credits, and the free Starter plan runs on them too, so prospecting volume is capped rather than the feature set
  • Plans described as unlimited are capped in the fair use policy at 10,000 credits a month for non-paying accounts
  • Connecting a mailbox that is not Gmail or Microsoft requires a paid plan
  • How many records can be selected at once varies by tier
  • Running out of credits means buying more rather than waiting for a reset

Seamless.AI

  • Pro and Enterprise pricing is not published and requires contacting sales.
  • Free plan is limited to just 50 credits and a single user.
  • Data accuracy for contact details can vary and requires verification before outreach.
  • Credit-based usage model means heavy prospecting can exhaust allotments quickly.

Pricing, plan by plan

Apollo.io

Free
  • FreeFree
    • Basic contact search
    • Limited searches
  • Starter$49/month
    • Everything in Free
    • Advanced search
    • Email finder
  • Professional$149/month
    • Everything in Starter
    • Automation
    • Advanced analytics

Seamless.AI

Free
  • FreeFree
    • 1 user
    • 50 credits
    • Email and cell phone search
  • Pro$undefined/mo
    • Per-user pricing
    • Unlimited exports
    • Annual credit packages
  • Enterprise$undefined/mo
    • Unlimited users
    • Custom credit allotments
    • Dedicated success manager

Which should you pick?

Choose Apollo.io if

  • You need contact database.
  • You want to start without paying.
  • You also want email finder.
Apollo.io review

Choose Seamless.AI if

  • You need contact search.
  • You want to start without paying.
  • You work on web, api.
  • You also want real-time search engine.
Seamless.AI review

Questions people ask

Is Apollo.io or Seamless.AI better?
Neither clearly leads. Apollo.io starts at Free and Seamless.AI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apollo.io or Seamless.AI?
Apollo.io starts at Free and Seamless.AI at Free.
Does Apollo.io or Seamless.AI run on more platforms?
Apollo.io runs on Web. Seamless.AI runs on web, api.
Can I use Apollo.io for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apollo.io best used for?
Apollo.io is most often used for sales prospecting and lead generation, contact database management for sales teams, email outreach and workflow automation. Of those, sales prospecting and lead generation and contact database management for sales teams are not what Seamless.AI is typically brought in for.
What can Apollo.io do that Seamless.AI cannot?
Apollo.io covers Contact database, Email finder, Lead search, Automation. Seamless.AI covers Contact search, Real-time search engine, Job change alerts, Buyer intent data.

Answered from the vendors’ own pages

Apollo.io: Does Apollo offer a free plan?

Yes, Apollo offers a Starter plan that is free forever and includes unlimited email addresses for contacts. Gmail and Microsoft email account linking are available on the free plan with limited third-party email account linking.

Source
Seamless.AI: Is there a free plan, and what are its limits?

Yes, the Free plan includes 1 user and 50 credits, with access to email and cell phone search, real-time search, and API access.

Source
Apollo.io: How does Apollo's credit system work?

Apollo uses a credit-based system for exporting contact data outside the platform. Free and non-paying accounts have a monthly credit limit of 10,000 credits. Paid accounts receive limits based on their plan pricing, calculated as the lesser of annual commit divided by $0.025 or 1 million credits annually.

Source
Seamless.AI: How is usage metered on Seamless.AI?

Seamless.AI uses a credit system where credits are consumed to research contact details; paid Pro plans start with larger annual credit packages than the Free plan.

Source
Apollo.io: How much do trial plans cost on Apollo?

Apollo trial plans include 50 credits and 5 mobile credits to test paid features at no charge. Trial versions do not support non-Gmail/Microsoft email account linking. Upgrades take effect immediately while downgrades take effect at the end of the billing cycle.

Source
Seamless.AI: Does Seamless.AI have an API?

Yes, API access is included even on the Free plan, alongside export and integration capabilities on paid plans.

Source
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