Crustdata vs Kaspr: API Platform vs Chrome Extension
You're comparing an API platform to a Chrome extension. That's like comparing Stripe to a cash register - both handle transactions, but they're built for completely different people. The fact that "Crustdata vs Kaspr" is even a search term tells you how fragmented B2B data has become.

Pick Crustdata if you're a developer building AI agents or programmatic enrichment pipelines and need real-time company signals via API.
Pick Kaspr if you're an individual sales rep doing targeted European prospecting at low volume.
Around 70% of B2B data goes stale within a single year. Both tools attack that problem - for very different buyers.
What Is Crustdata?
Crustdata is an API-first data infrastructure company, YC-backed, built for developers who need real-time B2B signals piped into their own systems. We're talking hiring signals, funding rounds, company events - all delivered via API endpoints and webhooks. The product covers over a billion people and 60 million companies, but accessing that data requires writing code.
Here's the thing: if you don't have a developer on staff, Crustdata isn't for you. It's infrastructure, not a tool. There's no dashboard to click around in, no Chrome extension to install. You either build on top of it or you don't use it at all.
What Is Kaspr?
Kaspr is the opposite. It's a Chrome extension that reveals phone numbers and emails when you're browsing professional profiles. Owned by Cognism, it draws from 200M+ profiles and verifies data against 120 sources.
The user base skews heavily European. Of Kaspr's 833 G2 reviews (4.4/5 rating), 699 come from European users. If you're prospecting EMEA contacts, the workflow is dead simple - install, click, reveal. That's the whole pitch. Both tools show up in Reddit prospecting threads, but for completely different use cases: Crustdata for data infrastructure, Kaspr for quick contact reveals.
Feature Comparison
| Dimension | Crustdata | Kaspr |
|---|---|---|
| Core product | Real-time B2B data API | Chrome extension |
| Data type | Company & people signals, events | Phones, emails |
| Database size | Over 1B people, 60M companies | 200M+ profiles |
| Pricing | ~$1K-$5K+/mo (est.) | $0-$99/user/mo |
| Free tier | Yes (limited test credits) | Yes (5 phone + 5 direct email + 15 B2B email) |
| Ease of use | Requires a developer | Install and click |
| API access | Core product | Business tier, 60 RPM |
| Data freshness | Real-time via APIs/webhooks | Verified at capture |
| Compliance | Not specified | GDPR & CCPA aligned |
| Ideal user | Devs, AI-agent builders | Reps, recruiters |
These tools barely overlap. Pick based on whether you need an API or a Chrome extension. If you need both verified contact data and self-serve simplicity, you probably need something else entirely.

Crustdata needs a developer. Kaspr caps you at 200 phone reveals. Prospeo gives you 300M+ profiles, 125M+ verified mobiles, and 98% email accuracy - all self-serve with 30+ search filters. No code, no credit walls, no annual contracts.
Get the data both tools can't give you - starting free.
Pricing Breakdown
Kaspr publishes pricing, which is refreshing for this space:

| Plan | Monthly | Annual | Phone Credits | Direct Email | B2B Email |
|---|---|---|---|---|---|
| Free | $0 | $0 | 5/mo | 5/mo | 15/mo |
| Starter | $65/user | $49/user | 100/mo | 5/mo | Unlimited |
| Business | $99/user | $79/user | 200/mo | 200/mo | Unlimited |
| Enterprise | Custom | Custom | Unlimited | Unlimited | Unlimited |
A few details worth knowing: revealing a phone costs 1 credit, an email costs 1 credit, and pulling both from the same profile costs 2. If no contact is found, you aren't charged. Starter credits roll over month to month.
Add-on credits run $0.11-$0.16 per credit on monthly add-ons and $0.21-$0.36 per credit on annual add-ons, depending on volume. Export limits cap at 12,000/year on Starter and 30,000/year on Business.
Crustdata doesn't publish pricing. We estimate production usage starts in the low-to-mid four figures monthly, scaling with credit consumption and webhook volume. Their free access is for testing endpoints, not a real plan.
If your average deal size is under $15K and you don't have a developer on staff, you have no business evaluating Crustdata. The implementation cost alone will eat your ROI.
Limitations That Matter
Kaspr's Weak Spots
Kaspr works best for targeted, low-volume European prospecting from professional profiles. We've seen teams burn through monthly credits in under a week during hiring sprints - 200 phone reveals sounds generous until you're sourcing for three open roles simultaneously.

Bulk workflows get clunky because capture is tightly tied to profile-based lookups rather than being built as a CSV-first enrichment product. Some G2 reviewers report accounts flagged for suspicious activity after heavy extension use, and you need a minimum of 20 connections on your profile to start. If you're running high-volume outbound across multiple regions, Kaspr's credit model will frustrate you fast.
Crustdata's Weak Spots
Crustdata delivers powerful real-time signals - but only if you can build the integration. There's no UI. Pricing is opaque. Implementation requires real developer time, and the independent review footprint is thin, so you're buying on faith and a demo. For a non-technical sales team, it's a non-starter.
What Most Readers Actually Need
Let's be honest: if you're not a developer and you need more than 100 phone reveals a month, neither tool solves your problem.

One scenario we see constantly: a 5-person SDR team outgrows Kaspr's credit limits within the first month, then spends weeks evaluating enterprise tools they can't afford. Prospeo at ~$0.01/lead would've saved them the detour - especially if you’re building a repeatable lead generation workflow and tracking lead generation metrics.


SDR teams outgrow Kaspr's credit limits in weeks, and Crustdata's pricing starts at $1K/mo before you write a line of code. Prospeo delivers verified emails at ~$0.01 each on a 7-day refresh cycle - with bounce rates under 4% across 15,000+ companies.
Stop choosing between overbuilt and underpowered.
FAQ
Is Kaspr owned by Cognism?
Yes. Kaspr is part of Cognism, but the products share only partial data overlap. Diamond Data phone verification, intent data, SOC 2 compliance, and DNC scrubbing across 15 countries are exclusive to Cognism's platform.
Does Crustdata have a free plan?
Crustdata offers limited free access for testing API endpoints. Real production usage requires custom pricing - typically in the low-to-mid four figures monthly with no self-serve option.
Which tool is better for email outbound?
Neither is built for it. Kaspr is a reveal-first extension with a credit model, and Crustdata delivers company and people signals via API. For verified email outbound at scale, Prospeo delivers 98% accuracy across 300M+ profiles with a 7-day refresh cycle, and teams consistently report bounce rates under 4%.
What's a good alternative if neither fits?
If you need verified emails, direct dials, and self-serve access without writing code or burning through credits, Prospeo is the strongest option at ~$0.01/lead. Other alternatives include Apollo (larger database, lower accuracy) and Cognism (Kaspr's parent, enterprise-priced).