# Apollo vs Clay: who uses which

On usedby, 71 companies use Apollo and 48 use Clay. 4 companies use both, including Google, Okta and Rippling. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-05: 118 of 119 public lines checked.

## Side by side

|  | [Apollo](https://www.usedby.ai/tools/apollo.md) | [Clay](https://www.usedby.ai/tools/clay.md) |
|---|---|---|
| Public customers | 71 | 48 |
| Confirmed | 63 | 31 |
| Observed | 8 | 17 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | HR & Recruiting (6), Data & Analytics (3), DevTools & Infrastructure (3) | Artificial Intelligence (7), Marketing Tech (7), DevTools & Infrastructure (5) |
| Category | Sales Prospecting & Enrichment | Sales Prospecting & Enrichment |
| Free trial | Free trial or free plan available. ([apollo.io](https://www.apollo.io/pricing), checked 2026-10-04) | Free trial or free plan available. ([clay.com](https://www.clay.com/pricing), checked 2026-10-04) |
| Integrations | HubSpot, Salesforce, Slack, Adobe Marketo, Airtable, Albato, Amplitude, Asana, Clay, ClickUp, Coda, Chili Piper ([apollo.io](https://www.apollo.io/product/integrations), checked 2026-10-04) | Salesforce, Salesloft, Outreach, Snowflake, HubSpot, Dynamics 365 CRM, Gong, Google BigQuery, Typeform, Smartlead.ai, Instantly, Semrush ([clay.com](https://www.clay.com/integrations), checked 2026-10-04) |
| Pricing | Free: $0; Basic: $49 Per seat per month, billed annually; Professional: $79 Per seat per month, billed annually; Organization: $119 Per seat per month, (min 3 seats) billed annually ([apollo.io](https://www.apollo.io/pricing), checked 2026-10-04) | Free: Free; Launch: $167 mo; Growth: $446 mo; Enterprise: contact sales ([clay.com](https://www.clay.com/pricing), checked 2026-10-04) |
| Security | — | SOC 2 Type II, ISO 27001, ISO 42001 ([trust.clay.com](https://trust.clay.com/), checked 2026-10-04) |
| Data processing terms | — | A data processing agreement is available. ([trust.clay.com](https://trust.clay.com/), checked 2026-10-04) |

## Companies named on both

Confirmed or observed on each side. The first public proof is not an adoption date.

| Company | First public proof, Apollo |
|---|---|
| [Google](https://www.usedby.ai/companies/google.md) | On or before November 2024 |
| [Okta](https://www.usedby.ai/companies/okta.md) | — |
| [Rippling](https://www.usedby.ai/companies/rippling.md) | — |
| [Mutiny](https://www.usedby.ai/companies/mutiny.md) | On or before November 2024 |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Clay: [Pump](https://www.usedby.ai/case-studies/pump-clay.md): **6x faster**: “new reps were revenue-generating 6x faster than before Clay” (captured by usedby 2026-10-05)
- Clay: [Merge](https://www.usedby.ai/case-studies/merge-clay.md): **15%**: “a 15% increase in enterprise meetings booked” (captured by usedby 2026-10-05)

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Source: https://www.usedby.ai/compare/apollo-vs-clay · How we check: https://www.usedby.ai/methodology