Act! vs TheirStack: CRM Platform vs Data Enrichment Tool Comparison
Compare Act! (CRM platform) and TheirStack (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Act! is a CRM platform for customer relationship management and sales pipeline tracking, priced from $30/mo, while TheirStack is a data enrichment tool for B2B lead data and contact enrichment, priced from free. Teams needing to organize contacts and track deals should choose Act!, teams needing accurate contact data for target accounts should choose TheirStack, and many teams use both.
Key takeaways
- Act! Advantage Standard starts at $30/mo and includes Basic Email Marketing with 2,500 sends per month.
- TheirStack's Free plan includes 50 company credits and 200 API credits per month.
- TheirStack's API, Webhooks and MCP plan costs $49/mo and includes 1,500 API credits per month.
- Act! lists 10 features including full-featured CRM, mobile app, email marketing, and marketing automation.
- Act! integrates with 16 tools including Outlook, Slack, Shopify, and QuickBooks Online, while TheirStack integrates with 5 tools including Clay, Zapier, and Make.
Reviewed and updated September 4, 2026
Act! vs TheirStack: CRM Platform vs Data Enrichment Tool Comparison
Sales teams building an outbound stack often weigh Act!, a CRM platform for customer relationship management and sales pipeline tracking, against TheirStack, a data enrichment tool for B2B lead data and contact enrichment. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.
The Quick Answer
Act! is a CRM platform for customer relationship management and sales pipeline tracking; TheirStack is a data enrichment tool for B2B lead data and contact enrichment. By each vendor's own wording, Act! lists full-featured crm and mobile app and email marketing, and TheirStack lists job search and company search.
TheirStack offers a lower entry point at $0/mo compared to Act! at $30/mo.
If your priority is organizing contacts, tracking deals, and forecasting revenue, Act! is the one built for it; for finding accurate contact data for target accounts, that is TheirStack. Many teams run one of each.
Understanding the Core Difference
Act! is Act! is a CRM and marketing automation platform for small and midsize businesses that unites sales, marketing and customer management in one platform. It is sold as Act! Advantage cloud plans and an Act! Premium Desktop on-premises edition.
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
Act! Advantage Standard
Free
Act! Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Act! Advantage Standard | $30/mo | Basic Email Marketing (includes 2,500 sends/mo) |
| Act! Advantage Professional | $45/mo | Email Marketing Plus (includes 25,000 sends/mo) |
| Act! Advantage Ultimate | $60/mo | Marketing Automation (includes 50,000 sends/mo) |
| Act! Premium Desktop | $40/mo | - |
| Enterprise Engagement | Contact Sales | - |
Source: Act! 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
TheirStack offers the lower entry point ($0/mo vs $30/mo). Teams watching their budget will appreciate the savings, especially when starting out.
Act! offers 5 pricing tiers compared to TheirStack's 4, giving you more granularity as you scale.
TheirStack includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Full-featured CRM and mobile app
- Email marketing
- Interactive quotes and payments
- Online appointment scheduling
- Forms, surveys, website chat and event management
- Reports and interactive dashboards
- and 4 more listed below
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- and 2 more listed below
Act! Key Features
- Full-featured CRM and mobile app
- Email marketing
- Interactive quotes and payments
- Online appointment scheduling
- Forms, surveys, website chat and event management
- Reports and interactive dashboards
- Marketing automation
- Lead scoring
- Project management
- Accounting integration
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 Act!
- Full-featured CRM and mobile app
- Email marketing
- Interactive quotes and payments
- Online appointment scheduling
- Forms, surveys, website chat and event management
- Reports and interactive dashboards
- Marketing automation
- Lead scoring
- Project management
- Accounting integration
Listed only by TheirStack
- Job search
- Company search
- Company lookup
- Enrichment
- Exports
- Email alerts
- Webhooks
- MCP server
Integration Ecosystem
Act! Integrations
Act! connects with: Outlook, Google Contacts, Slack, Eventbrite, SurveyMonkey, Wufoo, BigCommerce, Ecwid, Shopify, Volusion, Facebook, Freshdesk, Zendesk, FreshBooks, QuickBooks Online, Xero.
TheirStack Integrations
TheirStack connects with: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Integrations listed only by Act!: Outlook, Google Contacts, Slack, Eventbrite, SurveyMonkey, Wufoo, BigCommerce, Ecwid, Shopify, Volusion, Facebook, Freshdesk, Zendesk, FreshBooks, QuickBooks Online, Xero.
Integrations listed only by TheirStack: Clay, LinkedIn Audiences, Make, N8N, Zapier.
Use Case Recommendations
Best Fit for Act!
- Budget-conscious teams looking for an affordable CRM platform
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (16 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
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
Feature Comparison Summary
| Feature | Act! | TheirStack |
|---|---|---|
| Starting Price | $30/mo | Free |
| Top Tier Price | Contact Sales | Contact Sales |
| Total Features Listed | 10 | 8 |
| Integrations | 16 | 5 |
| Founded | N/A | 2021 |
Getting Started Checklist
- Define your customer relationship management and sales pipeline tracking and B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected contacts and deals and 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
Act! serves the customer relationship management and sales pipeline tracking side of an outbound stack and TheirStack the B2B lead data and contact enrichment side. TheirStack offers a more accessible entry point, while Act! starts at $30/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 Act! and TheirStack for current information.
Frequently asked questions.
Frequently asked questions- What is the main difference between Act! and TheirStack?
- Act! is a CRM platform built for customer relationship management and sales pipeline tracking, while TheirStack is a data enrichment tool built for B2B lead data and contact enrichment. They cover different parts of the sales workflow, so many teams use both rather than choosing one over the other.
- Which one is cheaper, Act! or TheirStack?
- TheirStack has the lower entry point at $0/mo with its Free plan, compared to Act!'s entry price of $30/mo for the Advantage Standard plan. TheirStack's free tier includes 50 company credits and 200 API credits per month, making it easier to evaluate without upfront cost.
- Does Act! offer more features than TheirStack?
- Act! lists 10 features including full-featured CRM, mobile app, email marketing, marketing automation, and lead scoring, while TheirStack lists 8 features including job search, company search, enrichment, and webhooks. Act! also offers 5 pricing tiers compared to TheirStack's 4.
- What integrations does TheirStack support compared to Act!?
- TheirStack integrates with 5 tools: Clay, LinkedIn Audiences, Make, N8N, and Zapier. Act! integrates with 16 tools including Outlook, Google Contacts, Slack, Shopify, Freshdesk, Zendesk, and QuickBooks Online, giving it broader integration support for complex tech stacks.
- Who should choose Act! over TheirStack?
- Act! best fits budget-conscious teams that still need a wide feature set, organizations with complex tech stacks needing broad integration support across 16 integrations, and enterprise buyers who prefer custom pricing and dedicated support. TheirStack, by contrast, is better suited for teams focused specifically on finding accurate contact data for 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
Connect on LinkedIn →Explore more.
Ready to scale your outreach?
We build GTM engines that book real meetings. See the receipts.
Related articles.
AroundDeal vs Salesflare: Data Enrichment Tool vs CRM Platform Comparison
Compare AroundDeal (data enrichment tool) and Salesflare (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Evaboot vs Microsoft Dynamics 365 Sales: Data Enrichment Tool vs CRM Platform Comparison
Compare Evaboot (data enrichment tool) and Microsoft Dynamics 365 Sales (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Agile CRM vs LeadIQ: CRM Platform vs Data Enrichment Tool Comparison
Compare Agile CRM (CRM platform) and LeadIQ (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Anymail Finder vs Pipeline CRM: Data Enrichment Tool vs CRM Platform Comparison
Compare Anymail Finder (data enrichment tool) and Pipeline CRM (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
AroundDeal vs Maximizer: Data Enrichment Tool vs CRM Platform Comparison
Compare AroundDeal (data enrichment tool) and Maximizer (CRM platform) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Breakcold vs Bulk Email Checker: CRM Platform vs Data Enrichment Tool Comparison
Compare Breakcold (CRM platform) and Bulk Email Checker (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.