Head-to-head · Sweepstakes Software
ViralSweep vs KingSumo
ViralSweep leads on 0 checks, KingSumo on 1, and 0 are even. Who comes out ahead on the 1 yes/no, price and count check where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreViralSweep · 6.9/10
- Free planonly KingSumo
ViralSweep scores higher on our rubric for sweepstakes software: 6.9 against 6.8 out of 10; our editors rank them #6 and #7.
KingSumo offers free plan; ViralSweep doesn't.
ViralSweep is the better fit for referral campaigns that need fraud controls. KingSumo is the better fit for simple, low-cost giveaways with referrals.
- ViralSweep fits best
Referral campaigns that need fraud controls
- KingSumo fits best
Simple, low-cost giveaways with referrals
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Side by side
| Feature | ViralSweep 6.9/10 Visit ↗ | KingSumo 6.8/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 6.9 | 6.8 |
| Ranking | #6 in Sweepstakes Software | #7 in Sweepstakes Software |
| Best for | Referral campaigns that need fraud controls | Simple, low-cost giveaways with referrals |
| Pricing model | Paid | Free plan + paid |
| Starting price | $41/mo | Not published |
| Free plan | — | ✓ (best) |
| Free trial | — | — |
| Deployment | Cloud | Cloud |
| Platforms | Web | Web |
| Support | Email, Live chat, Phone, Docs | Docs |
| Integrations | 20 integrations | 2 integrations |
| Built for | Small business, Mid-market, Enterprise | Solo, Small business, Mid-market |
| Specs | ||
| Entry limit | Not published | Not published |
| Winner selection | Not published | Random |
| Entry methods | Not published | Email; Facebook; social-account follows; link clicks; friend referrals |
| Campaign types | Not published | Giveaways; sweepstakes |
| Fraud controls | true | Not published |
| Native integrations | Not published | Not published |
| Our review | ||
| Pros |
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| Cons |
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| Our verdict | ViralSweep is a web-based platform for brands, marketers and agencies running sweepstakes, contests, giveaways, waitlists and instant-win promotions. It combines entry collection, social actions, referral links and analytics, with options… Read the review → |
KingSumo is a cloud-based, web giveaway platform for businesses, creators and publishers that want to grow email lists and audience reach. Entrants can join through email or Facebook, follow social accounts, click links or refer friends… Read the review → |
Strengths and trade-offs
ViralSweep — where it wins
- Supports milestone referrals, bonus entries and tiered prizes
- Filters spam and bots with IP controls and verification codes
- Hosts or embeds promotions and connects to marketing tools
Where it doesn't
- No permanent free plan; the 7-day trial requires card details
- Entry codes and premium integrations start at Business
- API, A/B testing and audience segments require Premium
KingSumo — where it wins
- Unlimited giveaways with referral-based bonus entries
- Embeddable forms, reminders and multiple prizes or winners
- $49 one-time plan adds branding, tracking and custom rules
Where it doesn't
- Campaign scope centers on giveaways and sweepstakes
- Web-only deployment may not suit app-based workflows
- Integration options are limited to Zapier and Integrately
- ViralSweep6.9/10 · From $41/mo (annual) · 7-day trial
A flexible promotion platform with referral tools and fraud controls, starting at $41/month billed annually.
Visit ViralSweepFull verdict → - KingSumo6.8/10 · Free plan · paid from $49
A low-cost giveaway tool with referrals, tracking and unlimited campaigns.
Visit KingSumoFull verdict →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
Last updated · How we research and update





