Slingshot vs XFlow Back in Stock Alerts
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026 for Slingshot, Nov 8, 2026 for XFlow Back in Stock Alerts.
The short answer
- Only XFlow Back in Stock Alerts lists a free plan. Paid plans start at $19/month for Slingshot and $9/month for XFlow Back in Stock Alerts.
- XFlow Back in Stock Alerts lists 5 features Slingshot’s listing doesn’t mention, including Batch send, Custom alerts, Inventory reports.
Head to head
- United States
- United Kingdom
- India
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
Growth
Scale
Free
- · 1 live restock campaign
- · 5 free attributed orders
- · Branded email template designs
- · Customized Notify button on product page
- · Double opt-in (customers confirm emails)
- · Onboarding & migration, 24/7 support
Starter
- · Advanced analytics & sales report
- · Everything in Free, plus
- · SMS notifications
- · Unlimited restock campaigns
- · Web push notifications
Growth
- · Branded sender email address
- · Customized Notify button on any page
- · Everything in Starter, plus
- · Multi-language emails, AI translation
- · Shopify Flow integration
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureWhen a product sells out, interested shoppers leave and most never return. Slingshot captures them before they go and brings them back when you restock. Shoppers sign up in one step, no account needed, through an on-site widget you add in the theme editor. The moment you restock, every waiting shopper gets a branded email linking back to the product.
Turns back in stock into a sales strategy. Build out-of-stock waitlists with a Notify me button on all pages. Use Analytics to see demand, wait times, restock priorities & suggested quantities. Win back sales with targeted campaigns, stunning branded email templates, unlimited restock alerts by email, web push, SMS. Send at your stock threshold & shoppers’ best local time to boost open rates.
- No-code on-site signup widget for out-of-stock products
- Automatic branded email the moment a product is back in stock
- Revenue attribution that ties each alert to the sale it earned
- Restock alerts: Notify customers with back in stock automated email alerts
- Personalization: Send tailored notifications to different customer segments
- Simple automation: Set up workflows to automate back in stock emails
- Internal notifications: Notify team of new subscribers or restock demand emails
All the numbers
Every figure, side by side
A green dot marks the app ahead on a measured figure. Estimates, gaps and apps that leave no storefront trace never take the lead.
Adoption
| Measure |  Slingshot |  XFlow Back in Stock Alerts |
|---|---|---|
| Detected stores | Not published | 647 |
| Net store change, 28 days | 0 | +3 |
| Stores added, 28 days | Not enough data | 13 |
| Big-brand share | Not enough data | 14% |
| Top store categories | Not published | Apparel & Accessories, Health & Beauty, Home & Garden |
| Top store countries | Not published | United States, United Kingdom, India |
Reviews
| Measure | Slingshot | XFlow Back in Stock Alerts |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 70 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | 0% |
Pricing
| Measure | Slingshot | XFlow Back in Stock Alerts |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $19/month | $9/month(ahead) |
| Longest free trial | 14 days | 7 days |
| Plans listed | 2 | 3 |
Listing
| Measure | Slingshot | XFlow Back in Stock Alerts |
|---|---|---|
| Shopify category rank | #247 | #19(ahead) |
| Shopify App Charts | Not on this week’s charts | #9 in Stock alerts |
| Built for Shopify | No | Yes |
| Launched | Jul 8, 2026 | Dec 1, 2025 |
| Languages | 2 | 3 |
| Developer | nerd with attitude | XFlow |
FAQ
Slingshot and XFlow Back in Stock Alerts: common questions
- Is Slingshot or XFlow Back in Stock Alerts cheaper?
- Only XFlow Back in Stock Alerts lists a free plan. Paid plans start at $19/month for Slingshot and $9/month for XFlow Back in Stock Alerts. Shoplist compares base prices only between monthly plans in the same currency; usage charges and annual plans vary, so check each plan’s limits.
- What features does each app list that the other doesn’t?
- Slingshot lists 1 the others don’t mention, such as Customer demand. XFlow Back in Stock Alerts lists 5 the others don’t mention, such as Batch send, Custom alerts, Inventory reports, Manual alerts. A feature missing from a listing may still be supported; this compares what each App Store listing says.
- Where does this comparison’s data come from?
- Shoplist crawls Shopify storefronts to detect which apps each store runs, and reads each app’s Shopify App Store listing for reviews, pricing, features and integrations. Store counts are as of Oct 13, 2026 for Slingshot, Nov 8, 2026 for XFlow Back in Stock Alerts; estimated figures are labeled.
How Shoplist compares apps
Store counts come from Shoplist’s crawl of Shopify storefronts, which detects the apps each store runs; they are as of Oct 13, 2026 for Slingshot, Nov 8, 2026 for XFlow Back in Stock Alerts. Reviews, ratings, plans, features and integrations come from each app’s Shopify App Store listing. 28-day figures are labeled when estimated, and a figure that is missing or estimated never decides who leads. Read the methodology.