TheirStack vs UserGems: Data Enrichment Tool Comparison

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

FreeTheirStack entry plan

Free

$3333/moUserGems entry plan

Core

TheirStack Pricing (as of September 2026)

Source: TheirStack Pricing

UserGems Pricing (as of September 2026)

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

TheirStack lists

• Job search
• Company search
• Company lookup
• Enrichment
• Exports
• Email alerts
• and 2 more listed below

UserGems lists

• 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

Getting Started Checklist

1. Define your B2B lead data and contact enrichment requirements and monthly budget
2. Estimate your expected data credits or contact lookups to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. 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.