Disclosure: we make a Shopify social proof app called Rushly. It is not on this list, because it does not do sales pops. Rushly does counters and inline indicators, not purchase notifications. Putting it here would be padding, so we left it out.
All figures checked 31 July 2026, from vendor pricing pages and Shopify App Store listings.
What a sales pop actually is
The slide-in notification in the corner: someone in Berlin just bought the Solara Serum, 3 minutes ago. It is the single most common social proof format in ecommerce, and the one with the widest gap between the best and worst implementations.
The good version is a factual report of an order that happened. The bad version is a script with a list of names, a list of cities, and a random timer. Both look identical to a shopper. Neither looks different in a screenshot on a pricing page.
So the useful way to compare these apps is not by feature list. It is by what the notification is actually reporting, and how much control you have over when it fires.
The apps
| App | Reviews | Rating | Built for Shopify | Paid from | Free tier |
|---|---|---|---|---|---|
| SP Sales Pop up (Care Cart) | 986 | 4.9 | Yes | $6.99/mo | 500 visitors/mo |
| SalesPop (Relay Commerce) | 881 | 4.7 | No | $29/mo | 200 sessions/mo |
| Qikify Sales Pop up & Proof | 567 | 5.0 | Yes | $6.99/mo | 500 visitors/mo |
| Sales Popup Autoketing | 541 | 4.7 | No | $9.99/mo | 1,000 views (once) |
| FOMO Sales Pop Up (SnapSell) | 171 | 4.9 | No | free only | Unlimited |
| Fomo | 125 | 4.5 | No | $25/mo | No |
| ProveSource | 84 | 4.9 | No | $29/mo | 1,000 visitors/mo |
| Nudgify | 50 | 4.3 | No | $9/mo | 1,000 impressions/mo |
Pick by what you need
Most installed, Shopify-native, cheap. SP Sales Pop up by Care Cart — 986 reviews, Built for Shopify, $6.99, and 9 interface languages on every tier. Watch the free tier: it bills automatically past 500 visitors a month rather than stopping.
Best rating consistency. Qikify holds a perfect 5.0 across 567 reviews, which almost nothing at that volume does. Bundles sales pops with email capture, exit intent, countdowns and announcement bars. English only, and no low-stock widget.
Most control over who sees what. SalesPop is the only app here with A/B testing, geolocation and segmentation, plus Checkout and Customer Accounts extensions and integrations with Klaviyo, Attentive, Judge.me and Omnisend. It is also the most expensive at $29/mo, metered by sessions — and its Starter session cap reads 1,000 on its own pricing page and 2,000 on its App Store listing, so confirm before buying.
Deepest rule engine for a complex stack. Fomo, with 100+ integrations. The only app here with no free tier at all, and metered at 8,000 notifications a month on the $25 plan.
Free, genuinely. FOMO Sales Pop Up by SnapSell has no paid plan to upgrade to. 171 reviews at 4.9. Different company from Fomo above, despite the name.
Most generous free cap. ProveSource at 1,000 visitors a month, with its branding shown on free. Nudgify matches the cap at 1,000 impressions and has a much gentler $9 paid step, but carries the lowest rating here at 4.3.
How to tell what the notification is reporting
This is the part worth your ten minutes, and it works on any of these apps.
1. Install on a store with no traffic. A development store, or your real store at 4am. Watch what appears. If purchase notifications keep sliding in on a store with no orders, they are not reporting orders.
2. Check whether names and locations are real. Most of these apps pull the customer’s city from the order. Some let you type in a list. If the setup screen has a field where you can enter names and cities yourself, understand that anything you put there is a claim you are making to shoppers, not a fact your store produced.
3. Watch the timing. Real orders arrive irregularly and cluster. A notification every 8 seconds, forever, at 3am, is a timer.
4. Look at what happens when you are quiet. This is the honest test. An app reporting real events shows nothing when nothing has happened. An app that always has something to say is always able to invent something.
None of this means any specific app on this list fabricates anything — we have not tested them and we are not claiming it. It means the question is answerable in ten minutes on your own store, and you should answer it rather than take anyone’s word, including ours.
Why this matters beyond taste
A purchase notification is a factual claim made to a shopper on your storefront. If it is not true, the exposure sits with your store, not with the app vendor who shipped the random number generator. Consumer-protection attention on dark patterns has been increasing, and “our app did that” is not a position any merchant wants to be arguing from.
There is also a quieter cost. Shoppers are better at spotting this than vendors assume, and a notification that reads as fake does not build urgency — it burns trust at exactly the moment someone was deciding whether to believe you.
Corrections
If we have your pricing or features wrong, email [email protected] and we will fix it and note the change.
Related: all ten Shopify social proof apps compared · the free tiers, and where free stops