SyncStock: Restock Alerts vs ThereStockAgain

Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Nov 6, 2026 for SyncStock, Jun 7, 2026 for ThereStockAgain.

The short answer

  • SyncStock lists 3 features ThereStockAgain’s listing doesn’t mention, including Automations, Email capture list, Price drop emails.

Head to head

Open this comparison in ShoplistFree account. Every feature, store and change, side by side.
Pitch
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Categories
  • Selling online - Other
  • Email marketing
  • Email marketing
Languages
  • English
  • English
Launched
Nov 5, 2026
Jun 3, 2026
Built for Shopify
Not badged
Not badged
Reviews per month
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—
Detected stores
0active installs
0active installs
Most common store size
—
—
Top countries
—
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Free options
Free planFree trial
Free planFree trial
Monthly range
$50/month
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Plans
SyncStock Pro$50/month
7-day free trial
Free
Coverage
4 of 4 features100%
1 of 4 features25%
Unique strengths
  • Automations
  • Email capture list
  • Price drop emails
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Email marketing
100%4/4
25%1/4
Campaign types
100%2/2
50%1/2
Managing campaigns
100%2/2
0%0/2
310onlybothonly
SyncStockThereStockAgain4 features listed across both App Store listings

Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.

See every feature
Works with also listed by another
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How it sells itself

Most 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.

There's Stock Again lets customers subscribe to restock alerts for any out-of-stock product or variant. When inventory is replenished, subscribers automatically receive an email with a direct link to purchase, no need to do anything else. Setup takes minutes — add the widget to your store theme with no coding required. Monitor all subscriptions and sent notifications from a clean dashboard inside your Shopify admin.

Key points
  • 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
  • Automatic email alerts when products are back in stock
  • No-code widget added to your store via theme app extension
  • Dashboard to track subscriptions and notifications sent
Screenshots
Restock alerts the moment it lands
Sneakers, apparel and trading cardscustomer in stock dashboardShoppers see what’s in their size
App dashboard showing subscriptions and email notifications sent
Restock email notification received by customerWidget DisplayBack in stock widget on a product page with sold out item

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.

Showing only the rows where the apps differ.

Adoption

MeasureSyncStockThereStockAgain
Detected storesNot publishedNot published
Net store change, 28 days00estimated
Stores added, 28 daysNot enough dataNot enough data
Big-brand shareNot enough dataNot enough data
Top store categoriesNot publishedNot published
Top store countriesNot publishedNot published

Reviews

MeasureSyncStockThereStockAgain
App Store ratingNot publishedNot published
App Store reviewsNot publishedNot published
New reviews, 28 daysNot enough dataNot enough data
Reviewers a year or more inNot enough dataNot enough data

Pricing

MeasureSyncStockThereStockAgain
Free planNot listedNot listed
Lowest paid monthly plan$50/monthNo monthly plan listed
Longest free trial7 daysNot listed
Plans listed1Not published

Listing

MeasureSyncStockThereStockAgain
Shopify category rankNot enough data#406in Email marketing
Shopify App ChartsNot on this week’s chartsNot on this week’s charts
Built for ShopifyNoNo
LaunchedNov 5, 2026Jun 3, 2026
Languages1English1English
DeveloperSyncStockDual Apps

FAQ

SyncStock and ThereStockAgain: common questions

What features does each app list that the other doesn’t?
SyncStock lists 3 the others don’t mention, such as Automations, Email capture list, Price drop emails. 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 for SyncStock, Jun 7, 2026 for ThereStockAgain; 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 for SyncStock, Jun 7, 2026 for ThereStockAgain. 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.