Operator-grade comparison

Leadfeeder vs Leadsy (2026): Mature CRM-Piped ID vs Lightweight Free-Tier ID

Leadfeeder and Leadsy both reverse-IP-resolve anonymous B2B traffic into company- level signal — but they target different scopes. Leadfeeder is the mature category anchor with deeper IP database, native CRM piping across 5 major CRMs, and a bundled prospect database on Platform tier. Leadsy is the lightweight option with usable free tier, simple Slack integration, and quick setup. Pick Leadfeeder for paid CRM workflows; pick Leadsy for free-tier evaluation or basic Slack alerts.

Side-by-side comparison

Capability	Leadfeeder	Leadsy
Free tier	Lite (100 cos/mo, 7-day history)	Free tier (basic ID + Slack)
IP database depth	Mature, constant updates from Dealfront	Lighter, smaller scope
CRM integrations	Native: SFDC, HubSpot, Pipedrive, Zoho, MSFT Dynamics	Slack-first; thinner native CRM
Bundled prospect database	60M cos / 400M contacts (Platform tier)	None
Entry paid tier	€99/mo annual (Visitor ID)	~$50-200/mo (volume-tiered)
Best fit	Mid-market B2B with CRM-piped workflow	SMB / solo evaluation, Slack alerts

Want to try Leadfeeder?

Mature CRM-piped visitor ID → start with Leadfeeder.

Leadfeeder — IP-to-company database with native CRM integrations across SFDC / HubSpot / Pipedrive / Zoho / Microsoft Dynamics + Slack. Free Lite tier (100 cos/mo, real product).

Start with Leadfeeder →Affiliate link — StackSwap earns a commission if you sign up for Leadfeeder. We only partner with tools we'd recommend anyway.

How to pick

What activation surface? CRM workflow → Leadfeeder. Slack alerts only → Leadsy is sufficient.
Budget? Free / under $100/mo → Leadsy or Leadfeeder Lite. €99+/mo → Leadfeeder Visitor ID. €399+/mo → Leadfeeder Platform with bundled DB.
Need bundled prospect database? Yes → Leadfeeder Platform. No → Leadsy or Leadfeeder Visitor ID covers it.
Stage? Solo / SMB evaluation → Leadsy or Leadfeeder Lite. Mid-market / enterprise CRM workflow → Leadfeeder paid.

FAQ

Leadfeeder vs Leadsy — which one wins?

Different shapes. Leadfeeder is mature CRM-piped visitor ID with a bundled prospect database (Platform tier) and integrations across 5 major CRMs + Slack + Google Ads. Leadsy is lightweight free-tier visitor ID with simple Slack integration. Pick Leadfeeder when CRM piping + bundled prospect database matter at mid-market scale. Pick Leadsy when you want free-tier signal evaluation or basic Slack alerts at lowest cost.

Are they competitors?

Same category, different scope. Both reverse-IP-resolve anonymous B2B traffic to company-level signal. Leadfeeder has the deeper IP database, broader CRM coverage, and a bundled Dealfront prospect database on Platform tier. Leadsy has the lighter setup and a more usable free tier. Many teams start with Leadsy free, evaluate signal quality, then upgrade to Leadfeeder for paid CRM workflows.

Cost comparison?

Leadsy: free tier (basic ID + Slack alerts), paid tiers approximately $50-200/mo based on volume. Leadfeeder: Lite free (100 cos/mo, real product), Visitor ID €99-€1,199/mo (tiered by monthly company IDs), Platform €399+/mo (bundles 60M-company / 400M-contact prospect database). Leadsy is cheaper at entry; Leadfeeder Platform is more comprehensive at higher tiers.

Which has better data quality?

Leadfeeder. Larger IP database with constant updates, more mature data infrastructure. Match rate (% of anonymous visitors successfully identified) is generally higher on Leadfeeder than Leadsy, especially for mid-market and larger company traffic. Leadsy's data is fine for evaluation and SMB workflows but the structural depth advantage goes to Leadfeeder.

CRM integration depth?

Leadfeeder wins. Native integrations across Salesforce, HubSpot, Pipedrive, Zoho, Microsoft Dynamics + Slack + Google Ads. Leadsy ships Slack-first integration with thinner native CRM coverage. For teams that want visitor signal landing in CRM workflow automatically, Leadfeeder is the right shape; for teams that just want a Slack ping when interesting accounts visit, Leadsy is sufficient.

Should I switch from Leadsy to Leadfeeder?

Yes if: (1) you've outgrown Leadsy free tier and want CRM-piped workflow not just Slack alerts; (2) you want the Platform tier's bundled prospect database; (3) you sell to mid-market or enterprise where buying committees research pre-form. No if: (1) Leadsy free tier covers your signal volume; (2) Slack alerts are the only activation surface you need; (3) budget can't justify €99+/mo paid tier.

Can I run both?

Rarely justified. Both tools track the same web traffic and resolve the same IP-to-company signal. Running both produces duplicate alerts and contact graphs. The one pattern where it makes sense: agency or consultant evaluating data quality across multiple visitor-ID tools for client recommendations — and that's temporary evaluation, not production.