KingSumo Review: Free Giveaway Tool With a $49 Pro Upgrade
KingSumo runs viral email giveaways. Free tier has unlimited contests, and a one-time $49 Pro adds branding removal, tracking and Mailchimp, Kit and Klaviyo.
LeadOcean is a 693M-profile B2B contact database. LeadsAgent is an AI finder for local businesses. Both start at $49 but suit different sellers.

LeadOcean takes 3 rounds, LeadsAgent takes 2.
| Round | Winner | Why |
|---|---|---|
| Database size and depth | LeadOcean | LeadOcean lists 693M people and 63M companies with titles, seniority and work history, while LeadsAgent only cites 200M+ businesses. |
| Email verification honesty | Tie | LeadOcean gives no accuracy or bounce figures, and LeadsAgent admits it only checks domains (MX, DNS), not individual inboxes. |
| Local business prospecting | LeadsAgent | LeadsAgent can find businesses with no website and researches public listings in real time, which suits web designers. |
| API and AI tool access | LeadOcean | LeadOcean offers a hosted MCP server for Claude, ChatGPT and Cursor plus a REST API, and LeadsAgent lists no API. |
| Cost to get the full feature set | LeadsAgent | LeadsAgent unlocks website analysis and bulk extraction at $98, while LeadOcean's bigger limits climb to $1,999 at Tier 5. |
| Track record so far | LeadOcean | LeadOcean has 80 AppSumo reviews averaging 4.89, while LeadsAgent has a single 5 out of 5 review. |
| LeadOcean | LeadsAgent | |
|---|---|---|
| Starts at | $49 | $79 |
| List price | $1164 | $348 |
| Plan | Lifetime Deal | Lifetime Deal |
| Deal ends | Not listed | Not listed |
| Best for | SaaS, Agencies, SaaS app / tool founders | Marketing agencies, Sales managers, Small businesses |
| Alternative to | Apollo, Lusha, ZoomInfo | Apollo, Hunter.io, ZoomInfo |
You’ve got a list to build and one free evening to build it. One buyer needs 200 SaaS founders with the right titles. Another needs every plumber in three towns, especially the ones who still have no website. LeadOcean and LeadsAgent both start at $49 on AppSumo and both list Apollo and ZoomInfo as alternatives, but they answer those two different versions of the same job.

LeadOcean is a B2B people database. The listing claims 693 million people profiles and 63 million companies, with job titles, seniority, work history and firmographics. Of those people, 366 million have an email and 166 million have a phone number. It is only data. The company says it isn’t a CRM or sequencer and won’t become one.
LeadsAgent works the other way round. You describe your ideal customer in one plain-English sentence, and an AI agent searches a database of 200M+ businesses, then researches each match in the background. The FAQ says it pulls from public business listings and company websites in real time.
So LeadOcean is the better fit when you’re hunting a person with a title. LeadsAgent is built around finding a business. The listing doesn’t mention title or seniority filters for LeadsAgent, so if you need to reach a head of marketing rather than a shop owner, that’s a gap you’d have to test.
Neither deal uses the pay-per-lead credits you’d see at Apollo or Clay, but both have caps, and the caps are shaped differently.
LeadOcean gives a fixed allowance that resets on a schedule. On Tiers 1 to 4 that’s every 5 hours, with weekly ceilings on top. Tier 1 ($49) gets 20K search records and 2K enrichments per 5 hours, 100K and 10K weekly, 100 phone reveals a month and 5K CSV rows a day. Go over and you get a 429 error, never an extra charge. The listing’s limits table is garbled in places, so confirm the numbers at checkout.
The cap that will bite first is the daily export. A 5K-row limit means you can’t dump a huge list in one go, however many search records you have. And 100 phone reveals a month is thin for anyone planning to cold call.
LeadsAgent counts one credit per business researched. Each code adds 5,000 leads and 50 AI messages a month, and you can stack up to 4 codes:
| Tier | Price | Leads/month | AI messages/month | Background agents |
|---|---|---|---|---|
| 1 | $49 | 5,000 | 50 | 1 |
| 2 | $98 | 10,000 | 100 | 1 |
| 3 | $147 | 15,000 | 150 | 2 |
| 4 | $196 | 20,000 | 200 | 3 |
Nothing rolls over. If you prospect in bursts, you’ll waste credits in the quiet months. Matches the agent finds but doesn’t research are free, and the listing says a single message can research thousands of leads, so 50 messages is probably less tight than it looks.
Neither listing gives you a reason to skip your own verifier.
LeadOcean promises verified work emails but publishes no accuracy rate, bounce rate or refresh schedule. AppSumo’s own summary of buyer reviews mentions occasional data quality issues and a need to verify contact details. In its favour, LeadOcean says it blends 20+ licensed and proprietary sources, names the answering dataset in a header, returns unknown fields empty instead of guessing, and suppresses removal requests immediately.
LeadsAgent’s marketing says emails are “found and checked,” which oversells it. The FAQ is more honest: checks happen at the domain level (MX record, DNS records, domain validity) and do not confirm that a specific inbox exists. A domain check tells you the company can receive mail. It doesn’t tell you jim@theirshop.com is real.
I’d give LeadsAgent a small credit for saying so plainly, even if the plain statement is less flattering than the headline. But a candid limitation is still a limitation. If you send cold email in volume, budget for a verifier on either tool.

LeadOcean’s edge is access. You can add its hosted MCP server in Claude, ChatGPT or Cursor, sign in, and ask for leads in plain English, with no key to paste. Developers get a REST API, and everyone gets CSV export. Enrichment takes a LinkedIn URL, work email or existing contact and fills in role, company data, work history and skills. The listing doesn’t show how well natural-language prompts turn into filters, and it doesn’t list every search filter, so check your niche before buying.
LeadsAgent’s edge is the angle it gives you for outreach. It can find businesses with no website. On every site it does find, it checks HTTPS and SSL/TLS certificates and flags slow sites and missing SEO basics. For a web or SEO seller, “your certificate is misconfigured” is a far better opener than “I do web design.” The listing doesn’t say how deep these checks go, so treat them as quick triage.
That site analysis, plus searching many cities or regions in one run, is not in Tier 1. You need at least two codes, so the realistic entry price for the interesting features is $98. It also lists only Chrome, Google Maps, Excel and browser use as integrations, with no API.
The AI score on each LeadsAgent lead isn’t explained, so use it as a sorting hint rather than a verdict.
LeadOcean’s ladder runs $49, $199, $399, $999 and $1,999. The top tier matches the company’s $497 a month Agency plan and is limited in quantity, so you’d pay roughly four months of that plan for lifetime access. That makes sense for an agency pulling lists all day and little sense for a solo founder. Ignore the inflated list prices on both listings.
LeadsAgent tops out at $196 for 20,000 researched leads a month, which is cheap if the data holds up. The question is whether it will. It’s a young product with one AppSumo review, a 5 out of 5, and the listing says nothing about company size or roadmap. LeadOcean has 80 reviews averaging 4.89, which is better evidence, though AppSumo reviews skew generous and the listing doesn’t say how long the company has operated.
Both deals include all future plan updates and AppSumo’s 60-day money-back guarantee, and both require activation or redemption within 60 days. That window is your real protection on products this new to the deal.
Pick LeadOcean if your customers are companies with identifiable decision-makers and you already have a sequencer. Start at Tier 1, and move up only if the daily CSV limit pinches. Skip it if you want leads and sending in one tool.
Pick LeadsAgent if you sell to local businesses, especially web design or SEO, and the no-website search and site checks match how you pitch. Buy one code first. Add a second if you find yourself wanting the analysis. Skip it if you need inbox-level email accuracy or credits that carry over.

Whichever you buy, spend the first week on a few hundred contacts from the niche you really sell to, run the emails through a verifier, and look at the bounce rate before the refund window closes.
The listing doesn't say so. LeadsAgent describes finding businesses and attaching emails, phones, socials and a score. It never mentions filtering by job title or seniority, which is what LeadOcean's search is built around.
No. LeadOcean says it is only data and won't become a CRM or sequencer. LeadsAgent lists CSV and Excel export but no CRM sync or outreach tools, so you need a separate sending tool for both.
Both come with AppSumo's 60-day money-back guarantee, and both require you to activate or redeem within 60 days of purchase. That makes a cheap Tier 1 or single-code test low risk with either.
How this comparison was made: researched from both tools' official listings and demo videos, and written with help from AI. We have not tested LeadOcean or LeadsAgent hands-on yet. Prices and deal terms change, so check AppSumo before you buy. See our affiliate disclosure.