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Marketing · head to head

Customer.io vs Fathom Analytics

Customer.io logo

Customer.io

Marketing

Data-driven messaging for teams getting started, scaling and beyond

From
$15/month
Rated
-
Full reviewWebsite
Fathom Analytics logo

Fathom Analytics

Marketing

Website analytics made simple

From
$14/month
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Customer.io essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that; Fathom Analytics there is no free tier, only a 7 day trial
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Customer.io and Fathom Analytics actually diverge.

Attributes where Customer.io and Fathom Analytics differ
AttributeCustomer.ioFathom Analytics
Starting price$15/month$14/month
FoundedUnknown2014

Identical on both: pricing model (subscription), free tier (No), platforms (Web), user rating (Not yet rated), category (Marketing).

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 Customer.io

Nothing recorded that Fathom Analytics does not also cover.

Only in Fathom Analytics

  • Page view tracking
  • Goal tracking
  • Real-time analytics
  • Referrer tracking
  • Privacy-focused
  • GDPR compliant
  • Cloud deployment
  • Web support

What people use each for

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

Customer.io

  • Orchestrating multi-channel customer journeys from signup to retentionnot Fathom Analytics
  • Personalizing email and SMS campaigns using customer profilesnot Fathom Analytics
  • Triggering automated messages based on user behaviornot Fathom Analytics
  • Coordinating cross-team messaging without rebuilding campaignsnot Fathom Analytics

Fathom Analytics

  • Privacy-focused web analytics without cookie bannersnot Customer.io
  • A lightweight Google Analytics replacementnot Customer.io
  • Tracking many sites from one accountnot Customer.io
  • Long-term historical reporting while subscribednot Customer.io

Where each one falls short

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

Customer.io

  • Essentials plan caps at 5,000 profiles (people and objects) and 1,000,000 monthly emails, with overages billed at $0.12 per 1,000 emails beyond that
  • Standard and Premium tiers show custom pricing only, and Enterprise is negotiated rate, so three of the four published tiers require a sales conversation
  • Monthly plans accept credit card only; annual billing via invoice (ACH/wire) requires the annual commitment

Fathom Analytics

  • There is no free tier, only a 7 day trial
  • Priced on pageviews, from $45 a month at the 500,000 pageview level
  • Custom events count against the pageview allowance rather than being tracked separately
  • Site allowances come in packs, with additional 50-site packs at $10 a month
  • Data is retained forever only while the subscription is active

Pricing, plan by plan

Customer.io

$15/month
  • Essentials$15/month
    • Base profiles starting at 5,000
    • Email sends: 1 million monthly
    • Community and email support
  • Standard$null/month
    • Mid-tier scaling across channels
    • Higher profile and email allowances
    • Email and priority support
  • Premium$null/month
    • Advanced custom workflows
    • Dedicated support
  • Enterprise$null/month
    • Custom pricing for dedicated infrastructure
    • HIPAA compliance
    • Dedicated hardware

Fathom Analytics

$14/month
  • Starter$14/month
    • Unlimited page views
    • 1 site
    • Real-time analytics

Which should you pick?

Choose Customer.io if

Nothing in the data separates Customer.io from Fathom Analytics on the points above - pick on price and on how each one feels to use.

Customer.io review

Choose Fathom Analytics if

  • You need page view tracking.
  • You also want goal tracking.
Fathom Analytics review

Questions people ask

Is Customer.io or Fathom Analytics better?
Neither clearly leads. Customer.io starts at $15/month and Fathom Analytics at $14/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Customer.io or Fathom Analytics?
Customer.io starts at $15/month and Fathom Analytics at $14/month.
Does Customer.io or Fathom Analytics run on more platforms?
Both run on Web, so platform support will not decide this one for you.
What is Customer.io best used for?
Customer.io is most often used for orchestrating multi-channel customer journeys from signup to retention, personalizing email and sms campaigns using customer profiles, triggering automated messages based on user behavior, coordinating cross-team messaging without rebuilding campaigns. Of those, orchestrating multi-channel customer journeys from signup to retention and personalizing email and sms campaigns using customer profiles are not what Fathom Analytics is typically brought in for.
What can Customer.io do that Fathom Analytics cannot?
Fathom Analytics covers Page view tracking, Goal tracking, Real-time analytics, Referrer tracking.

Answered from the vendors’ own pages

Customer.io: How much does Customer.io Essentials cost?

Customer.io Essentials starts at $15/month and includes 5,000 base profiles with 1 million monthly email sends, community and email support, and data-driven messaging tools. Customers can choose monthly or annual billing.

Source
Fathom Analytics: How much does Fathom Analytics cost?

Fathom's entry-level plan costs $45/month for up to 500,000 pageviews. Higher volume tiers exist (1M, 2M, 10M, 25M+ pageviews) with custom pricing. Yearly billing provides 2 months free.

Source
Customer.io: What are Customer.io's usage-based add-on costs?

Beyond plan limits, Customer.io charges $0.009 per additional profile, $0.12 per 1,000 additional emails, and $10 per 100K AI credits. Messages exceeding plan limits are charged at nominal rates. Billing occurs on the subscription anniversary.

Source
Fathom Analytics: Is there a free trial for Fathom Analytics?

Yes, Fathom offers a 7-day free trial. There is no free tier after the trial ends.

Source
Customer.io: Does Customer.io offer a startup discount?

Yes, early-stage companies that have raised under $10 million qualify for a full year free through Customer.io's Startup Program with annual billing.

Source
Fathom Analytics: What happens if my pageviews exceed my plan limit?

Fathom handles usage overage graciously, only upgrading your plan after two consecutive months over your limit. There are no immediate overage charges.

Source
Fathom Analytics: Can I add extra sites to my Fathom plan?

Yes, extra sites cost $10/month per 50-site pack, or $100/year (which includes two months free). All plans include a minimum of 50 included sites.

Source
Fathom Analytics: Can I cancel Fathom without a long contract?

Yes, there are no contracts and cancellation is flexible. Fathom does not lock customers into agreements.

Source
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