Ocean.io vs TheirStack: Data Enrichment Tool Comparison
Compare Ocean.io and TheirStack side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
Ocean.io and TheirStack are both data enrichment tools, but they differ in approach. Ocean.io is a B2B prospecting platform offering verified emails, direct phone numbers, and waterfall enrichment on a usage-based credit system. TheirStack is a job posting and technographics database with a free entry tier, best for budget-conscious teams and companies needing broader integration support.
Key takeaways
- Ocean.io lists 8 features including AI-powered lookalike filters and waterfall enrichment from 16+ data sources.
- TheirStack lists 8 features including job search, company search, and an MCP server, with a free tier offering 50 company credits and 200 API credits per month.
- Ocean.io integrates with 4 tools: HubSpot, Pipedrive, Salesforce, and Clay, while TheirStack integrates with 5 tools: Clay, LinkedIn Audiences, Make, N8N, and Zapier.
- TheirStack's API, Webhooks and MCP plan costs $49/mo for 1,500 API credits per month.
- TheirStack was founded in 2021, while Ocean.io's founding date is not listed.
Reviewed and updated September 4, 2026
Ocean.io vs TheirStack: Data Enrichment Tool Comparison
Ocean.io and TheirStack are both data enrichment tools. Choosing between them depends on your team size, budget, and specific B2B lead data and contact enrichment requirements. Here is what each vendor publishes about pricing, features, and integrations.
The Quick Answer
By each vendor's own wording, Ocean.io lists ai-powered lookalike filters and waterfall enrichment (16+ data sources), while TheirStack lists job search and company search. A capability both offer can appear under different names, so read both feature lists below.
TheirStack publishes an entry price of $0/mo; Ocean.io uses usage-based pricing, so the two cannot be compared on list price.
If your priority is finding accurate contact data for target accounts, both tools target it. The right choice depends on your budget, team size, and the specific capabilities you need most.
Understanding the Core Difference
Ocean.io is B2B prospecting and enrichment platform that returns verified emails and direct phone numbers on one credit system shared across the platform and the API.
TheirStack is Job posting and technographics database for sales teams. Finds companies by the technologies they use and the roles they are hiring for, and enriches a company list with technographics and buying intent.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Subscription (Yearly)
Free
Ocean.io Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Subscription (Yearly) | Usage-based | Minimum 9,000 credits, maximum 60,000; credits valid for 12 months |
| Subscription (Monthly) | Usage-based | Minimum 750 credits, maximum 5,000; credits valid for 6 months |
| Pay as you go | Usage-based | Minimum 1,000 credits, maximum 20,000; credits valid for 3 months |
| Custom plan | Contact Sales | Volume pricing for larger teams with flexible credit allocation |
Source: Ocean.io Pricing
TheirStack Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Free | Free | 50 company credits and 200 API credits per month |
| App | Usage-based | Company credit packs from 1,000 to 200,000 credits |
| API, Webhooks & MCP | $49/mo | 1,500 API credits per month |
| Datasets | Contact Sales | Jobs, Technographics and Buying intents datasets |
Source: TheirStack Pricing
Pricing Analysis
One or both platforms use custom or contact-based pricing for some tiers. Reach out to their sales teams for exact quotes based on your usage needs.
TheirStack includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- AI-powered lookalike filters
- Waterfall enrichment (16+ data sources)
- Double email verification (incl. catch-alls)
- Direct phone numbers
- Chrome extension
- Unlimited seats
- and 2 more listed below
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- and 2 more listed below
Ocean.io Key Features
- AI-powered lookalike filters
- Waterfall enrichment (16+ data sources)
- Double email verification (incl. catch-alls)
- Direct phone numbers
- Chrome extension
- Unlimited seats
- Free exports
- API access
TheirStack Key Features
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.
Listed only by Ocean.io
- AI-powered lookalike filters
- Waterfall enrichment (16+ data sources)
- Double email verification (incl. catch-alls)
- Direct phone numbers
- Chrome extension
- Unlimited seats
- Free exports
- API access
Listed only by TheirStack
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
Integration Ecosystem
Ocean.io Integrations
Ocean.io connects with: HubSpot, Pipedrive, Salesforce, Clay.
TheirStack Integrations
TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Shared Integrations
Both tools integrate with: Clay.
Integrations listed only by Ocean.io: HubSpot, Pipedrive, Salesforce.
Integrations listed only by TheirStack: LinkedIn Audiences, Make, N8N, Zapier.
Use Case Recommendations
Best Fit for Ocean.io
- Enterprise buyers who prefer custom pricing and dedicated support
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
- Sales teams researching target accounts
Best Fit for TheirStack
- Budget-conscious teams looking for an affordable data enrichment tool
- Organizations with complex tech stacks needing broad integration support (5 integrations)
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Feature Comparison Summary
| Feature | Ocean.io | TheirStack |
|---|---|---|
| Starting Price | Usage-based | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 8 | 8 |
| Integrations | 4 | 5 |
| Founded | N/A | 2021 |
Getting Started Checklist
- Define your B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected data credits or contact lookups to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Ocean.io and TheirStack both serve the B2B lead data and contact enrichment market. TheirStack publishes an entry price (a free tier), while Ocean.io uses usage-based pricing for its plans, so compare on features and on the quote you receive. Your decision should weigh pricing against the specific features that matter most for your workflow.
Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.
Pricing and features verified as of September 2026. Visit Ocean.io and TheirStack for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Ocean.io and TheirStack?
- Ocean.io is a B2B prospecting and enrichment platform that returns verified emails and direct phone numbers on a shared credit system, while TheirStack is a job posting and technographics database that finds companies by the technologies they use and roles they are hiring for, then enriches company lists with technographics and buying intent.
- Which tool is cheaper, Ocean.io or TheirStack?
- TheirStack publishes a free entry tier with 50 company credits and 200 API credits per month, while Ocean.io uses usage-based pricing across all its plans, so the two cannot be directly compared on list price. TheirStack's free tier makes it easier to evaluate without upfront cost.
- Does Ocean.io or TheirStack have more integrations?
- TheirStack lists 5 integrations: Clay, LinkedIn Audiences, Make, N8N, and Zapier. Ocean.io lists 4 integrations: HubSpot, Pipedrive, Salesforce, and Clay. Both tools share Clay as a common integration.
- Which tool is best for budget-conscious teams?
- TheirStack is recommended for budget-conscious teams looking for an affordable data enrichment tool, since it offers a free tier and lets teams start free and scale up as their needs grow.
- Who should choose Ocean.io over TheirStack?
- Ocean.io fits enterprise buyers who prefer custom pricing and dedicated support, revenue operations teams building targeted prospect lists, marketing teams enriching CRM data for segmentation, and sales teams researching target accounts.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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