TheirStack vs UserGems: Data Enrichment Tool Comparison
Compare TheirStack and UserGems side by side. See pricing, features, and integrations to choose the right data enrichment tool for your needs.
TheirStack is a job posting and technographics database that starts free and scales with usage-based credit packs, while UserGems surfaces buying-signal companies and contacts, then runs AI-driven outbound and account-based marketing, starting at $3333/mo. TheirStack fits budget-conscious teams wanting to start free, while UserGems suits mid-market to enterprise teams with established budgets and complex integration needs.
Key takeaways
- TheirStack's Free plan costs $0/mo and includes 50 company credits and 200 API credits per month, while UserGems' entry Core plan costs $3333/mo for 4,000,000 credits.
- TheirStack offers 4 pricing tiers (Free, App, API/Webhooks/MCP, and Datasets) compared to UserGems' 3 tiers (Core, Advanced, Elite).
- TheirStack integrates with 5 tools: Clay, LinkedIn Audiences, Make, N8N, and Zapier, while UserGems integrates with 8: Salesforce, Hubspot, Outreach, Salesloft, Gong Engage, LinkedIn, Meta, and Google.
- TheirStack was founded in 2021, while UserGems' founding year is listed as N/A in the comparison.
- Both vendors list 8 features each on their own pages, but TheirStack's list centers on job search, company search, and enrichment, while UserGems' list centers on account scoring, automated campaigns, and AI agents.
Reviewed and updated September 4, 2026
TheirStack vs UserGems: Data Enrichment Tool Comparison
Sales teams evaluating B2B lead data and contact enrichment tools often narrow their shortlist to TheirStack and UserGems. Both target the same job, but they cater to different workflows and budgets. This comparison covers pricing, features, and integrations so you can pick the right fit.
The Quick Answer
By each vendor's own wording, TheirStack lists job search and company search, while UserGems lists build list (create & enrich) and account & contact scoring. A capability both offer can appear under different names, so read both feature lists below.
TheirStack offers a lower entry point at $0/mo compared to UserGems at $3333/mo.
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
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.
UserGems is Surfaces companies and buyers showing buying signals, then discovers, enriches and scores the matching accounts and contacts. Deploys AI agents to run outbound and account-based marketing from those signals.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Free
Core
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
UserGems Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Core | $3333/mo | 4,000,000 credits |
| Advanced | $6250/mo | 10,000,000 credits |
| Elite | $12500/mo | 25,000,000 credits |
Source: UserGems Pricing
Pricing Analysis
TheirStack is more affordable at the entry level ($0/mo vs $3333/mo). For teams with tight budgets or those just getting started with B2B lead data and contact enrichment, this price difference matters.
TheirStack offers 4 pricing tiers compared to UserGems's 3, giving you more granularity as you scale.
TheirStack includes a free tier, letting you test the platform before committing financially.
Features Breakdown
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- and 2 more listed below
- Build List (create & enrich)
- Account & Contact Scoring
- Automated Campaigns
- Writing Agent
- Research Agent
- AI Co-pilot Chrome Extension
- and 2 more listed below
TheirStack Key Features
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
UserGems Key Features
- Build List (create & enrich)
- Account & Contact Scoring
- Automated Campaigns
- Writing Agent
- Research Agent
- AI Co-pilot Chrome Extension
- Contact-level Intent & Web Deanonymization
- CRM Hygiene
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 TheirStack
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
Listed only by UserGems
- Build List (create & enrich)
- Account & Contact Scoring
- Automated Campaigns
- Writing Agent
- Research Agent
- AI Co-pilot Chrome Extension
- Contact-level Intent & Web Deanonymization
- CRM Hygiene
Integration Ecosystem
TheirStack Integrations
TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.
UserGems Integrations
UserGems connects with: Salesforce, Hubspot, Outreach, Salesloft, Gong Engage, Linkedin, Meta, Google.
Integrations listed only by TheirStack: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Integrations listed only by UserGems: Salesforce, Hubspot, Outreach, Salesloft, Gong Engage, Linkedin, Meta, Google.
Use Case Recommendations
Best Fit for TheirStack
- Budget-conscious teams looking for an affordable data enrichment tool
- Teams that want to start free and scale up as needs grow
- Enterprise buyers who prefer custom pricing and dedicated support
Best Fit for UserGems
- Mid-market to enterprise teams with established B2B lead data and contact enrichment budgets
- Organizations with complex tech stacks needing broad integration support (8 integrations)
- Revenue operations teams building targeted prospect lists
- Marketing teams enriching CRM data for segmentation
Feature Comparison Summary
| Feature | TheirStack | UserGems |
|---|---|---|
| Starting Price | Free | $3333/mo |
| Top Tier Price | Contact Sales | $12500/mo |
| Total Features Listed | 8 | 8 |
| Integrations | 5 | 8 |
| Founded | 2021 | N/A |
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
TheirStack and UserGems both serve the B2B lead data and contact enrichment market. TheirStack offers a more accessible entry point, while UserGems starts at $3333/mo. 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 TheirStack and UserGems for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between TheirStack and UserGems?
- TheirStack is a job posting and technographics database that finds companies by the technologies they use and roles they're hiring for, then enriches company lists with technographics and buying intent. UserGems surfaces companies and buyers showing buying signals, then discovers, enriches, and scores matching accounts and contacts, and deploys AI agents to run outbound and account-based marketing from those signals.
- How much does TheirStack cost compared to UserGems?
- TheirStack starts at $0/mo with its Free plan, offering 50 company credits and 200 API credits per month, while its API, Webhooks, and MCP plan costs $49/mo. UserGems starts at $3333/mo for its Core plan with 4,000,000 credits, scaling up to $12500/mo for its Elite plan with 25,000,000 credits.
- Which integrations does each tool support?
- TheirStack connects with 5 tools: Clay, LinkedIn Audiences, Make, N8N, and Zapier. UserGems connects with 8 tools: Salesforce, Hubspot, Outreach, Salesloft, Gong Engage, LinkedIn, Meta, and Google, making it a better fit for organizations with complex tech stacks needing broad integration support.
- Is TheirStack a good fit for budget-conscious teams?
- Yes, TheirStack is recommended for budget-conscious teams looking for an affordable data enrichment tool, as well as teams that want to start free and scale up as needs grow. It also includes a free tier, letting teams test the platform before committing financially.
- Which tool is better for enterprise teams with established budgets?
- UserGems is recommended for mid-market to enterprise teams with established B2B lead data and contact enrichment budgets. It's also a fit for organizations with complex tech stacks needing broad integration support, revenue operations teams building targeted prospect lists, and marketing teams enriching CRM data for segmentation.
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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