The Bottom Line
- Price
- Free plan available. Compare plans
Key facts
- Viral giveaway platform that grows email lists through social sharing
- Free plan available; lifetime deal at $49 removes all limits
- Built by AppSumo with unlimited campaigns and GDPR compliance
Pros
- One-time lifetime payment eliminates recurring subscription costs
- Viral sharing mechanics amplify reach without ad spend
- Dead-simple setup takes minutes, not hours
- Free plan available with core giveaway features
- Built and backed by the AppSumo ecosystem
- GDPR compliance built in for international campaigns
Cons
- Viral entries can attract low-quality leads who only want prizes
- Limited analytics and reporting compared to full marketing suites
- No A/B testing for giveaway page variations
- Design customization options are basic
- Integration ecosystem is narrow beyond email providers
What is KingSumo?
Available on: Web
Ratings Across the Web
KingSumo holds an aggregate rating of 3.5 out of 5 from 16 reviews across SourceForge and G2, last checked September 11, 2026.
Ratings aggregated from independent review platforms. Learn more
Preview
Key Features
- Unlimited viral giveaway campaigns with no caps
- Bonus entry system that rewards social sharing
- Auto-reminder emails to boost participation rates
- GDPR-compliant data collection and consent management
- Embeddable giveaway widgets for any website
- Multiple prizes and winners per campaign
- Custom branding and sponsored entry removal (paid)
- Meta Pixel and conversion tracking integration
- Translation and localization for global campaigns
- Custom rules, terms, and additional entry fields
Pricing
KingSumo offers a generous free tier with optional paid upgrades for advanced features.
Is KingSumo worth the price?
It's best for small businesses, solopreneurs, and marketers looking for an affordable, powerful giveaway solution.
Hidden Costs & Gotchas
No overage fees mentioned.
KingSumo by the numbers
| Metric | KingSumo | Peer median | Position (1 is best) |
|---|---|---|---|
| Free plan | Yes | 6 of 25 have one | n/a |
| Listed as an alternative to | 4 tools | 3 | #9 of 25 (joint) |
Listed as an alternative to: #9 on 2026-10-16 to #9 on 2026-11-02 (rank among 25 tools, 1 is best).
Each position is counted among the tools that have data for that row, as noted under it. All Referral Marketing data · How we compute this. Advertising and placement fees are not inputs to any position.
Cite this: Toolradar, “KingSumo by the numbers”, Nov 2026.
Reviews
Review KingSumo, get a free AI guide
Share your experience and we will send you Improve Your Thinking Patterns Using ChatGPT, free.
Across 16 verified user reviews on G2, SourceForge
Add your hands-on experience using the offer above to help the next buyer.
Best KingSumo Alternatives
Top alternatives based on features, pricing, and user needs.
Still deciding?
Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.
Explore More
KingSumo FAQ
How does KingSumo facilitate audience growth for businesses?
Which teams benefit most from using KingSumo?
How is KingSumo priced?
What kind of trade-offs should users consider when choosing KingSumo?
Can KingSumo be integrated with other marketing tools?
How does KingSumo compare to Referral Rock?
Does KingSumo comply with data protection regulations for international campaigns?
Source: kingsumo.com