Restock Alerts by MerchaLabs vs ShopStack Restock Alert App
Two Shopify apps, side by side: detected stores, momentum, reviews, plans, listed features and who runs each. Store counts as of Oct 13, 2026.
The short answer
- Both list a free plan. Paid plans start at $9/month for Restock Alerts by MerchaLabs and $9.99/month for ShopStack Restock Alert.
- ShopStack Restock Alert lists 7 features Restock Alerts by MerchaLabs’s listing doesn’t mention, including Custom alerts, Email, Inventory reports.
Head to head
Momentum
New reviews each month
Review pace is the clearest public read on how fast an app is winning new merchants.
FREE
- · 50 emails per month
- · Auto-send on restock
- · CSV & JSON export
- · Email Support
- · Email customisation
- · Manual send controls
STARTER
- · 1,000 emails per month
- · Auto-send on restock
- · CSV & JSON export
- · Email customisation
- · Manual send controls
- · Priority Support
GROWTH
- · 5,000 emails per month
- · Auto-send on restock
- · CSV & JSON export
- · Email customisation
- · Manual send controls
- · Priority Support
Free
- · 30 emails/month
- · Back in stock + price drop alerts
- · Button + form customizations
- · Fundamental insights (last 30 days)
- · Unlimited subscribers
Lite
- · 1,000 emails/month
- · Email support
- · Everything in Free plan
- · Full analytics filters & reports
- · Remove branding
- · Top requested product insights
Starter
- · 3,500 emails/month
- · Customize email templates
- · Everything in Lite plan
- · Export subscribers & alerts
- · Priority support
- · Send email from your domain
Pro
- · 10,000 emails/month
- · Advanced automation guardrails
- · Everything in the Starter plan
- · Higher throughput & queue priority
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureRestock Alerts captures emails from shoppers on sold-out product pages, then automatically notifies them when inventory returns, turning missed sales into recovered revenue. Shoppers get back in stock alerts and click to buy instantly. Merchants get a subscriber dashboard with stats, product breakdowns, and CSV/JSON export, plus customizable email templates and automatic or manual send modes.
This app helps merchants recover lost sales by automatically notifying customers when items return in stock or go on sale. It reduces support requests related to restock inquiries and improves customer engagement by sending timely alerts. Merchants can customize alert designs, monitor performance, and manage subscribers without technical setup.
- Emails subscribers automatically the moment inventory is back in stock.
- Track signups per product and export the full list as CSV or JSON.
- Edit sender name, subject, and body to match your brand; test before going live.
- Automatic alerts for restocked and on-sale products
- Customizable signup forms and alert designs
- Dashboard to view subscribers and alert performance
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 |  Restock Alerts by MerchaLabs |  ShopStack Restock Alert |
|---|---|---|
| Detected stores | Not published | Not published |
| Net store change, 28 days | 0 | 0 |
| Stores added, 28 days | Not enough data | Not enough data |
| Big-brand share | Not enough data | Not enough data |
| Top store categories | Not published | Not published |
| Top store countries | Not published | Not published |
Reviews
| Measure | Restock Alerts by MerchaLabs | ShopStack Restock Alert |
|---|---|---|
| App Store rating | Not published | 5.0 ★ |
| App Store reviews | Not published | 5 |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | Restock Alerts by MerchaLabs | ShopStack Restock Alert |
|---|---|---|
| Free plan | Yes | Yes |
| Lowest paid monthly plan | $9/month(ahead) | $9.99/month |
| Longest free trial | 7 days | 7 days |
| Plans listed | 3 | 4 |
Listing
| Measure | Restock Alerts by MerchaLabs | ShopStack Restock Alert |
|---|---|---|
| Shopify category rank | Not enough data | #104 |
| Shopify App Charts | Not on this week’s charts | Not on this week’s charts |
| Built for Shopify | No | No |
| Launched | Jun 17, 2026 | Dec 12, 2025 |
| Languages | 1 | 1 |
| Developer | NimbleSoft Limited | ShopStack |
FAQ
Restock Alerts by MerchaLabs and ShopStack Restock Alert: common questions
- Is Restock Alerts by MerchaLabs or ShopStack Restock Alert cheaper?
- Both list a free plan. Paid plans start at $9/month for Restock Alerts by MerchaLabs and $9.99/month for ShopStack Restock Alert. 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?
- Restock Alerts by MerchaLabs lists 4 the others don’t mention, such as Alert settings, Inventory tracking, Manual alerts, Waitlists. ShopStack Restock Alert lists 7 the others don’t mention, such as Custom alerts, Email, Inventory reports, Notification button. 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; 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. 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.