SyncStock: Restock Alerts 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 Nov 6, 2026.
The short answer
- Only XFlow Back in Stock Alerts lists a free plan. Paid plans start at $50/month for SyncStock and $9/month for XFlow Back in Stock Alerts.
- XFlow Back in Stock Alerts lists 12 features SyncStock’s listing doesn’t mention, including Alert settings, Auto-alerts, Back in stock.
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.
SyncStock Pro
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 featureMost restock apps alert per product. SyncStock alerts by size: shoppers save their sizes once and hear about every pair that fits, not one item at a time. It waits for your drop to finish, then sends one email per shopper with every match, so no inbox spam. You see exactly which sales came from alerts, even Shop Pay checkouts, and which sizes shoppers want most, so you buy inventory that sells.
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.
- Restock alerts by size, price range, and condition, sent by email and push
- Waits for your drop to finish, then sends one email per shopper
- Website plugin to redirect customers to their restock alerts page in one click
- Tracks sales from alerts, including Shop Pay and Buy it now checkouts
- 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 |  XFlow Back in Stock Alerts | |
|---|---|---|
| Detected stores | Not published | 587 |
| Net store change, 28 days | 0 | +2 |
| Stores added, 28 days | Not enough data | 12 |
| Big-brand share | Not enough data | 14% |
| Top store categories | Not published | Apparel & Accessories, Home & Garden, Health & Beauty |
| Top store countries | Not published | United States, United Kingdom, India |
Reviews
| Measure | 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 | XFlow Back in Stock Alerts | |
|---|---|---|
| Free plan | Not listed | Yes |
| Lowest paid monthly plan | $50/month | $9/month(ahead) |
| Longest free trial | 7 days | 7 days |
| Plans listed | 1 | 3 |
Listing
| Measure | XFlow Back in Stock Alerts | |
|---|---|---|
| Shopify category rank | Not enough data | #19 |
| Shopify App Charts | Not on this week’s charts | #9 in Stock alerts |
| Built for Shopify | No | Yes |
| Launched | Nov 5, 2026 | Dec 1, 2025 |
| Languages | 1 | 3 |
| Developer | SyncStock | XFlow |
FAQ
SyncStock and XFlow Back in Stock Alerts: common questions
- Is SyncStock or XFlow Back in Stock Alerts cheaper?
- Only XFlow Back in Stock Alerts lists a free plan. Paid plans start at $50/month for SyncStock 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?
- SyncStock lists 4 the others don’t mention, such as Automations, Back-in-stock emails, Email capture list, Price drop emails. XFlow Back in Stock Alerts lists 12 the others don’t mention, such as Alert settings, Auto-alerts, Back in stock, Batch send. 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 Nov 6, 2026; 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 Nov 6, 2026. 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.