ShopStack Restock Alert App vs Stock Signal‑ Restock 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 ShopStack Restock Alert, Oct 31, 2026 for Stock Signal‑ Restock Alerts.
The short answer
- Only ShopStack Restock Alert lists a free plan. Paid plans start at $9.99/month for ShopStack Restock Alert and $5.99/month for Stock Signal‑ Restock Alerts.
- ShopStack Restock Alert lists 5 features Stock Signal‑ Restock Alerts’s listing doesn’t mention, including Back in stock, Custom alerts, 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
- · 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
Stock Signal
- · Back-in-stock alerts
- · Custom alert settings
- · Demand tracking dashboard
- · Email notification templates
- · Manual and automatic sends
- · Storefront notify-me widget
Coverage counts what each App Store listing names. Every feature, checked off app by app, is in Shoplist.
See every featureThis 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.
Stock Signal adds a Notify me button to sold-out product pages so shoppers can request restock emails. When an item is available again, it automatically emails interested shoppers with a link back to the product. Customize email templates, manage requests, and see which products shoppers want. A guided setup checklist and video help you enable the storefront widget.
- Automatic alerts for restocked and on-sale products
- Customizable signup forms and alert designs
- Dashboard to view subscribers and alert performance
- Collect back-in-stock alert requests on sold-out product pages
- Send automatic and manual back-in-stock notifications
- Customize alert settings, templates, and storefront widget behavior
- Track shopper demand and notification activity in one dashboard
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 |  ShopStack Restock Alert |  Stock Signal‑ Restock Alerts |
|---|---|---|
| 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 | ShopStack Restock Alert | Stock Signal‑ Restock Alerts |
|---|---|---|
| App Store rating | 5.0 ★ | Not published |
| App Store reviews | 5 | Not published |
| New reviews, 28 days | Not enough data | Not enough data |
| Reviewers a year or more in | Not enough data | Not enough data |
Pricing
| Measure | ShopStack Restock Alert | Stock Signal‑ Restock Alerts |
|---|---|---|
| Free plan | Yes | Not listed |
| Lowest paid monthly plan | $9.99/month | $5.99/month(ahead) |
| Longest free trial | 7 days | 7 days |
| Plans listed | 4 | 1 |
Listing
| Measure | ShopStack Restock Alert | Stock Signal‑ Restock Alerts |
|---|---|---|
| Shopify category rank | #104(ahead) | #283 |
| Shopify App Charts | Not on this week’s charts | #8 on Pricing moves in Stock alerts |
| Built for Shopify | No | No |
| Launched | Dec 12, 2025 | May 13, 2026 |
| Languages | 1 | 1 |
| Developer | ShopStack | Sam Chandra |
FAQ
ShopStack Restock Alert and Stock Signal‑ Restock Alerts: common questions
- Is ShopStack Restock Alert or Stock Signal‑ Restock Alerts cheaper?
- Only ShopStack Restock Alert lists a free plan. Paid plans start at $9.99/month for ShopStack Restock Alert and $5.99/month for Stock Signal‑ Restock 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?
- ShopStack Restock Alert lists 5 the others don’t mention, such as Back in stock, Custom alerts, Inventory reports, Pop-ups. Stock Signal‑ Restock Alerts lists 2 the others don’t mention, such as Alert settings, 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 ShopStack Restock Alert, Oct 31, 2026 for Stock Signal‑ Restock 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 ShopStack Restock Alert, Oct 31, 2026 for Stock Signal‑ Restock 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.