Products with reviews convert at roughly 3.5x the rate of products without them. Displaying recent purchase notifications can lift add-to-cart rates by 15-20%. These aren't aspirational numbers — they're what happens when visitors see that other people are actually buying from you.
The best Shopify social proof apps automate that signal. They show recent sales popups, live visitor counts, low stock alerts, and review badges so new visitors don't feel like they're the first person to trust your store. The right app runs quietly in the background, building confidence without slowing your site down. The wrong one clutters your pages with fake-looking popups that do the opposite.
This roundup covers the top social proof apps for Shopify in 2026 — what each one actually does, what it costs, and where it falls short.
What Are Shopify Social Proof Apps?
Social proof apps are Shopify plugins that display real-time buying activity — recent purchases, visitor counts, reviews, and stock levels — to build trust and urgency with new visitors. They fall into a few categories, and most apps combine several:
- Sales popups — small notifications showing recent purchases ("Sarah from Austin just bought...")
- Live visitor counts — real-time numbers showing how many people are viewing a product
- Low stock alerts — "Only 3 left in stock" urgency triggers
- Review widgets — star ratings and customer feedback displayed on product pages
- Aggregate counters — "1,247 people bought this in the last 30 days"
What they don't do: generate reviews for you, fix a bad product, or make up for a store that looks untrustworthy for other reasons. Social proof amplifies existing trust signals. If your store has zero sales and zero reviews, a social proof app won't manufacture credibility from nothing.
Fomo: The Original Social Proof App
Fomo pioneered the "recent purchase popup" concept on Shopify and still has the deepest integration library — over 100 app connections including Klaviyo, Google Analytics, and most review platforms. It shows recent purchases, add-to-cart events, product page visits, and low stock alerts.
The app is polished and highly customizable. You can control timing, placement, and which pages show notifications. It also supports geolocation targeting, so you can show different messages to visitors from different countries.
Pricing: Free plan available. Paid plans are subscription-based, with pricing tied to the number of notifications served per month. The higher tiers get expensive — some merchants report costs reaching $499/month at scale, which is steep for a notification tool.
Rating: 4.5 stars on the Shopify App Store.
Best for: Established stores with significant traffic that need advanced targeting and integrations. Not ideal for small stores — the pricing model scales with volume, and several reviewers note it's built for larger businesses.
Nudgify: Clean Design With A/B Testing Built In
Nudgify focuses on what it calls "nudges" — social proof notifications designed to feel native to your store rather than intrusive. It covers recent sales, low stock alerts, free shipping thresholds, and real-time cart activity.
The standout feature is built-in A/B testing. You can test different notification types against each other and measure which ones actually move your conversion rate. One merchant reported a 19% conversion lift after testing and optimizing their nudge strategy. The app also supports 32+ languages, which matters if you're selling internationally.
Pricing: Free plan available. Paid plans start at $9/month.
Best for: Merchants who want data-driven social proof — the A/B testing capability is rare in this category. Also a strong choice for international stores thanks to multi-language support. The free plan is more limited than some competitors.
ProveSource: Best Free Plan for Small Stores
ProveSource offers five notification types: Stream (recent actions), Combo (aggregate activity), Live Visitors, Reviews, and Social Counter. That's a wider range than most competitors include on their free tier.
The free plan covers up to 1,000 monthly unique visitors — enough for stores still building traffic. It integrates with Shopify, WooCommerce, and 100+ other platforms, which is useful if you sell on multiple channels. Setup is straightforward, and the notifications look modern without heavy customization.
Pricing: Free plan (branded, 1K visitors). Paid plans from $29-$54/month to remove branding and increase visitor caps.
Rating: 4.9 stars with 190+ reviews.
Best for: New stores or stores under 1,000 monthly visitors that want social proof without paying anything. The free plan is genuinely usable, not just a teaser.
WiserNotify: Most Notification Templates
WiserNotify ships with 50+ notification templates and 250+ integrations, making it one of the most feature-dense options. It covers live visitor counts, recent sales, customer reviews, low stock alerts, flash discounts, and free shipping bars.
The app includes built-in A/B testing (like Nudgify) and offers pixel-perfect placement controls for both desktop and mobile. Reviewers consistently highlight the support team as responsive and willing to help with hands-on setup.
Pricing: Free plan available. Paid plans are competitively priced, though some merchants note that costs increase as stores scale.
Best for: Stores that want maximum variety in notification types without installing multiple apps. The template library saves design time, and the integration count means it'll likely work with whatever else is in your app stack.
Growave: Social Proof Plus Loyalty in One App
Growave isn't a pure social proof app — it bundles reviews, wishlists, loyalty programs, and referrals into one platform. If you're currently paying for separate apps to handle each of those, Growave consolidates them.
The reviews module connects with Google Merchant Center, so your star ratings appear in Google Shopping listings. That's a meaningful SEO and click-through advantage that standalone social proof popup apps don't offer. Automated review requests, photo reviews, and Q&A are all included. If you want to go deeper on review strategy, see our guide on automated review collection.
Pricing: Free plan available. Paid plans from $49/month with a 14-day free trial.
Rating: 4.8 stars with 1,180+ reviews — the highest review count on this list by a wide margin.
Best for: Stores that need reviews, wishlists, AND loyalty in one place. Not the right pick if you only need sales popups — you'd be paying for features you won't use. But if you're running separate apps for reviews and loyalty, Growave is likely cheaper than the combined cost.
Kaktus Sales Pop Up: Simple and Free
Kaktus (SALES POP UP: Fomo+Social Proof) does one thing well: it shows what other people are buying. The app highlights recent purchases with clean popup notifications designed to create urgency and build trust with new visitors.
There's no complex setup, no visitor-based pricing tiers, and no long feature list. You install it, configure the popup style, and it starts showing real purchase data. For stores that want basic social proof without managing another complicated tool, Kaktus delivers.
Pricing: Free.
Best for: Budget-conscious stores that want simple recent-purchase popups with zero cost. It lacks the advanced targeting and A/B testing of paid alternatives, but that's fine if you just need the basics working.
How to Pick the Right Social Proof App
The choice depends on your store size, budget, and what you're already paying for:
- Just starting out, minimal budget: ProveSource (free, 1K visitors) or Kaktus (free, simple)
- Growing store, want to test and optimize: Nudgify ($9/month with A/B testing) or WiserNotify
- High-traffic store, need advanced integrations: Fomo (100+ integrations, but costs scale with volume)
- Want to replace multiple apps: Growave (reviews + loyalty + wishlists + social proof in one)
One thing to check before installing any of these: run a speed test on your store first, then test again after installation. Social proof apps load additional scripts, and some are heavier than others. If your store already loads slowly on mobile — especially in emerging markets where 3G connections are common — an extra 200ms of load time can hurt conversions more than the social proof helps.
Start with one app, measure whether it moves your add-to-cart rate over 2-3 weeks, and only keep it if the numbers justify the cost. Social proof works, but only when the execution matches your store.