ViralSweep is a broad promotion platform with sweepstakes, contests, instant wins, purchases, waitlists, milestones, and enterprise services. UserLoop is the focused option for Shopify merchants who want product-led contests, bonus actions, Klaviyo sync, and a lower published starting price.
Free plan · No credit card · Native Shopify integration
Your customer data, now conversational
UserLoop MCP answers from responses and order data.
Choose UserLoop for a focused Shopify contest app with a free plan, $29 Pro plan, product prizes, smart storefront placement, AI setup, and Klaviyo sync. Choose ViralSweep for a broader promotion suite, unlimited paid-plan entries, advanced integrations, multi-brand controls, or enterprise services.
UserLoop narrows the workflow to the contest formats and integrations a Shopify merchant needs most.
See how UserLoop AI worksChoose Shopify products for the prize and keep setup close to the store catalog.
Get a contest recommendation based on the store and products before editing the campaign.
Award entries for social follows, friend referrals, photos, trivia, and other published actions.
Sync entrants to Klaviyo on Pro and continue the relationship with an automated flow.
ViralSweep publishes unlimited promotions and entries on paid plans, many promotion apps, official rules generation, broader integrations, multi-brand controls, and higher-tier API and enterprise services.
Starter includes sweepstakes, contests, instant win, purchases, waitlist, milestones, comments, gallery, and email forms.
Higher plans add white labelling, custom actions, entry codes, geo targeting, sales tracking, and premium integrations.
API, video uploads, A/B testing, payments, audience segments, bulk imports, legal administration, and white-glove services are published on higher tiers.
Business and higher plans publish additional brands and users for larger organizations and agencies.
Plan gates, beta labels, and workflow differences are shown explicitly, not flattened into a misleading row of ticks.
| Capability | UserLoop | ViralSweep |
|---|---|---|
| Published entry plan | Free · 1 active contest and 50 entries/month | 7-day trial; Starter $49/month |
| Paid monthly starting price | $29 Pro | $49 Starter |
| Shopify product prizes | Published Shopify-native feature | Shopify integration available |
| Promotion formats | Giveaways, sweepstakes, referral and photo contests | Sweepstakes, contests, instant win, purchases, waitlists, milestones + more |
| Entries on paid plans | Unlimited on Pro | Unlimited promotions and entries |
| Popup and storefront placement | App block, smart popup, standalone page | Embeddable campaign with platform integrations |
| Klaviyo | Automatic sync on Pro | Integration availability varies by tier |
| API and enterprise services | Focused merchant workflow | API on Premium; enterprise legal and custom services |
| Multiple brands and users | Single-store focus | Published on Business and higher tiers |
Last fact-checked 15 July 2026. Product details change. We reviewed the public documentation below and will keep this page updated.
Best for merchants who value a native store workflow and do not need an agency-scale promotion suite.
Best for teams that will use multiple promotion apps, advanced integrations, API access, multi-brand controls, or legal and white-glove services.
Both apps are free to start and live in minutes.
