
ZoomInfo
Lusha
Hunter.io
Instantly.ai
lemlist
Clearbit
Snov.io
Apollo’s predictive prospecting, sales engagement, and actionable analytics help the teams to reach its full revenue potential.

UserTesting.com
Maze
Hotjar
PlaybookUX
UXtweak
UsabilityHub
UserBob
Easy, fast, and affordable user testing for websites and prototypes.

Which is more popular?
Based on our record, Apollo.io seems to be more popular. It has been mentioned 69 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | apollo.io | userbrain.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States | 2014 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Apollo.io yet.
Userbrain is a remote user testing tool backed by a community of over 120k+ testers worldwide. Start testing in minutes. Get results in hours with easy, fast, and affordable user testing. Find out what’s working for your product — and what’s not. Whether you’re a UX Designer, Researcher, Product...
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Free software to find email addresses - apollo.io review
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Make money testing websites with Userbrain (2016)
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Apollo.io and Userbrain. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The right Apollo alternative fixes the part of Apollo that costs you meetings. Bad data calls for a better database, and a missing channel calls for a specialist tool next to Apollo.
What is the best AI prospecting tool for B2B sales in 2026? The best tool depends on your team's specific situation. toflow.ai is a strong fit for multi-channel outreach across email, LinkedIn, and WhatsApp, and is...
Apollo is a full sales engagement platform — sequences, email tracking, dialer, and a contact database. Their strength is email addresses, not phone numbers. Phone number coverage exists but it's thinner than...
Userbrain is a great UserZoom alternative when you are only looking to run a couple of tests and don’t look for any extra features. They can provide you with basic usability and user tests.
While Userbrain is all-in-all a good user testing platform, it might not be for everyone. People are different as are their needs and projects – therefore we have put together a list of 5 user testing tools that could...
Recommendations tracked on public social media and blogs since March 2021.


Personal email domains destroy this. Clearbit's Enrichment API returns a null company when it hits gmail.com. Apollo routes personal domains straight to a consumer bucket and skips B2B fields entirely. Even PDL's /person/enrich endpoint... - Source: dev.to / 6 months ago
A few things worth flagging: PDL beats Clearbit's historical rates for US and Western European companies, but drops to ~52% match rate for Japan and South Korea specifically. Apollo underperforms on raw company matching but returns... - Source: dev.to / 6 months ago
One thing comparison guides consistently get wrong: Clay is not an enrichment API. It's a waterfall orchestration tool that calls People Data Labs, Apollo, Clearbit, and others in sequence for you. It's useful, but it adds 2–8 seconds of... - Source: dev.to / 6 months ago
Tracking Userbrain since Mar 2021.
When comparing Apollo.io and Userbrain, you can also consider the following products.

ZoomInfo is a B2B database providing detailed business information on people and companies.
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Beautiful & actionable analytics for InVision prototypes
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Find all the email addresses related to a domain
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The #1 Leader in Heatmaps, Recordings, Surveys & More. Sign up for a 15-day free trial and start learning from real user behavior today!
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