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Fathom vs Heap: Analytics Comparison (2026)

Fathom is suitable for users who prioritize data ownership, privacy, and straightforward pricing with extensive site support. Heap is suitable for users who need a free tier to start, and who may benefit from an AI assistant and unlimited enrichment sources.

AI Citation Scorecard

How often each is cited by major AI engines when buyers ask analytics questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Too early to call — probes still building data.
ChatGPT
Fathom
27 / 163 probes
17%
Average
Heap
Tracking…
No data yet
Perplexity
Fathom
55 / 163 probes
34%
Good
Heap
Tracking…
No data yet
Gemini
Fathom
55 / 163 probes
34%
Good
Heap
Tracking…
No data yet
Claude
Fathom
29 / 163 probes
18%
Average
Heap
Tracking…
No data yet
Copilot
Fathom
119 / 348 probes
34%
Good
Heap
Tracking…
No data yet
Scale:NoneLowFairStrongExcellent

Probes run hourly; each (engine × query) combo retests every ~3 days.

Pricing

Fathom
Starting price
$15/month
Free tier
—
usefathom.com ↗
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Heap
Starting price
—
Free tier
Yes
heap.io ↗
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Key Features

Fathom
  • ✓Up to 50 sites included
  • ✓Ecommerce/event tracking included
  • ✓Easy integration with all CMSs/frameworks
  • ✓API access
  • ✓Forever data retention
  • ✓100% data ownership
  • ✓No cookie banners required
  • ✓Unlimited email reports
Heap
  • ✓Core analytics charts
  • ✓Unlimited enrichment sources
  • ✓6 months data history
  • ✓SSO

When to choose Fathom

Fathom is suitable when users require up to 50 sites included, ecommerce/event tracking, API access, forever data retention, and unlimited email reports. Fathom also emphasizes 100% data ownership and no cookie banners.

When to choose Heap

Heap is suitable when users need a free tier, core analytics charts, unlimited enrichment sources, and an AI assistant. Heap provides 6 months of data history and SSO.

Frequently Asked Questions

What are the key differences in pricing and free options?
Fathom has a starting price of $15/month and does not offer a free tier. Heap offers a free tier, but the starting price for paid plans is not specified, and larger plans have custom pricing with potential add-on costs for advanced features.
What are the notable differences in features?
Fathom includes up to 50 sites, ecommerce/event tracking, API access, forever data retention, 100% data ownership, and no cookie banners required. Heap offers core analytics charts, unlimited enrichment sources, 6 months data history, and SSO. Heap also provides an AI assistant.
How do their data retention policies compare?
Fathom offers forever data retention, while Heap provides 6 months of data history.
What are the differences in integrations and customizability?
Fathom offers easy integration with all CMSs/frameworks and API access. Heap lists unlimited enrichment sources and includes SSO.
What are the differences in customer support and reporting?
Fathom includes unlimited email reports and has limited customer support options with no live demos. Heap's support varies by plan, and it offers an AI assistant.

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