Prospeo vs Wiza for phone numbers

This comes from Coda, Corey Leon's team of Canadian and U.S. cold callers. No paid links. No tool paid to be here.

What our numbers can and can't tell you

• It's one team and one time period. Your buyers and your callers are different.
• One big Wiza campaign was calling schools, a different kind of buyer than most of our Prospeo lists. This is not a lab test.
• A conversation depends on the list, the script and the caller, not only the data tool.
• The 500 number check and the dial results measure different things. One asks "is this a real mobile?" The other asks "did we end up talking to someone?" Both matter.

Steps

1. 1

   Test it with your own list, not their demo.

   Take 50 people you'd really call and run the same 50 through both tools.

2. 2

   Check 50 contacts by hand.

   Dial each mobile. Mark right person, wrong person, front desk, dead line, or left the company.

3. 3

   Pay month to month or pay as you go first.

   Both have a free start. Wiza's free plan gives 5 phones, so you may need a paid month to test 50.

4. 4

   Drop it if more than 20% is wrong.

   That's Kevin Hopp's rule. More than 10 bad out of 50 means move on.

5. 5

   Check the line before you dial a big list.

   A phone check like Trestle tells you mobile, landline or internet line. It checks the line, not the person, so the call is still the final word.

Side by side

Prospeo: try first

• What it does: Finds a person's work email and mobile from their name and company or LinkedIn link.
• Price: Free plan with 100 credits a month. Paid from $49 a month (our tool page, Oct 2026).
• Fits: Anyone who calls or emails B2B buyers.
• Skip it if: You only need company names, not people.

• What people say: Trustpilot: TrustScore 4.6 out of 5 from 132 reviews (read Oct 28, 2026). "Easy to navigate and produces accurate contact research output." (Trustpilot review). Most common praise: easy to use. Most common complaint: wrong or old company details.

Wiza: solid

• What it does: Turns LinkedIn searches and profiles into emails and phone numbers.
• Price: Free (20 emails, 5 phones). Individual Email + Phone $166 a month. Team Starter $49 a month for 100 emails and 100 phones (checked Oct 28, 2026).
• Fits: Teams that live in LinkedIn Sales Navigator.
• Skip it if: You need a big list cheap.

• What people say: Trustpilot: TrustScore 1.8 out of 5 from 14 reviews (read Oct 28, 2026). "Wrong information. Not my company anymore and my education is incorrect" (Trustpilot review). Most common praise: none on that page, all 14 were 1 star. Most common complaint: people upset their own details were in the data. Those read like people being looked up, not paying users.

One thing to watch on Wiza

On Wiza's API, counting a list is free but pulling the full profile list costs credits. We drained a balance that way once. If you use the API, check your credits after the first pull.

Prompts you can copy

Compare dial results from two tools

I dialed leads from two data tools. For each tool I have: number of dials, number of conversations over 60 seconds, and what kind of list it was [for example schools, manufacturers, hotels].

[paste numbers]

Work out the conversation rate for each tool. Then tell me in plain words if the difference could come from the list type instead of the tool. Suggest one fair test I could run next with the same list on both tools.

Sort my 50 number check

Here are 50 phone numbers I tested. Each row has: tool it came from, line type from my phone check, and what happened when I called: right person, wrong person, front desk, dead line, voicemail with the right name.

Count each result per tool. Tell me the percent wrong for each and say "drop it" next to any tool over 20% wrong.

[paste rows]

Sources

FAQ

So which one should I buy?

Try Prospeo first, then test Wiza on the same 50 people. Our numbers lean toward Prospeo for conversations, but your list can change that.

Why use Wiza at all if Prospeo had more conversations?

Because its mobiles checked out well. We use it as a second source to double check mobiles.

Does a real mobile mean I'll reach the person?

No. It means the line is a mobile. It might be an old number or the wrong person. Only the call tells you.

What counts as a real conversation?

For these numbers, a real conversation that lasted 60 seconds or more.

Rather have it done for you? We build the system that handles your outreach, one time, and you own it. See how it works.

First posted October 28, 2026. Last updated October 28, 2026. Free to copy and use, CC BY 4.0.