KingSumo vs SparkLoop Comparison 2026
Both cover giveaways & referrals and newsletter & email. Here is what separates them on price, billing, what you can take with you, and coverage.
At a glance
- Both have a genuinely free tier.
Side by side
KingSumo | SparkLoop | |
|---|---|---|
| Starting price | From $49 | Not listed |
| Pricing model | Free plan, paid tiers | Free plan, paid tiers |
| Free tier | Yes | Yes |
| Billing | One-time purchase | Not stated |
| Free trial | None | Not stated |
| API | Not stated | Not stated |
| Data export | Not stated | Not stated |
| Their cut | Not stated | Not stated |
| Runs on | Web | Web |
| Covers | Giveaways & Referrals, Newsletter & Email | Ad Networks, Giveaways & Referrals, Newsletter & Email |
Shaded rows are where the two answers disagree and both listings have answered. A row where one side has not stated a fact is left plain, because silence is not a difference.
KingSumo
Giveaways with a lifetime price tag
KingSumo runs the bonus-entry giveaway that grew half the email lists of the last decade, and it sells a lifetime licence rather than a subscription. The free tier covers unlimited giveaways with bonus entries and reminder emails. Branding controls, tracking and integrations are all on the paid side, and the sponsored entry stays on your giveaway until you pay.
SparkLoop
Get paid for recommending other newsletters
SparkLoop turns a newsletter's own audience into revenue by paying it to recommend other newsletters, either inside the email or on the page somebody lands on after subscribing. The same network runs the other way, so a publisher can buy subscribers from it as well as sell them. Both sides sit on the free plan. It works with the mainstream sending platforms rather than replacing one.
Our note
Treat the free tier as the whole product and the $2,000 add-on as a separate decision for a newsletter already growing fast enough to reward referrers. Read the per-subscriber rates before planning revenue around this, because they are the number the pricing page leaves out.
Only on this side
Ratings are the average of reviews readers left. The facts are stated by each tool’s own listing and are not verified by CloutStack. How we make money.