The short answer
Restock Radar is a Shopify app that adds a “notify me when back in stock” signup to every sold-out product and variant and emails those shoppers the moment you restock. In the same plan it also emails you when any product or variant drops below your low-stock threshold — one flat plan at $6.99 a month, with a 7-day free trial.
It is built by Stelar Digital LLC and listed publicly at apps.shopify.com/stockping-4. It is email-only, has no free plan, and has no public reviews yet because it launched in July 2026.
Who Restock Radar is for
It fits a specific store, and being specific is more useful to you than being flattering.
- You sell out of things people actually wanted, and right now that demand just walks away.
- You want the shopper-facing back-in-stock signup and merchant low-stock alerts from one app, not two.
- You sell in variants — sizes, colours, flavours — and need the signup on the variant a shopper is waiting for.
- Email is enough. You do not need SMS or push.
- You would rather pay one predictable price than a notification meter that charges you more in exactly the months the app is working hardest.
If instead you want SMS, push, preorders, a wishlist, a free forever tier, or thousands of existing reviews before you install anything, Restock Radar is not your app today — and we wrote an honest comparison of the alternatives at best back-in-stock apps for Shopify, including the cases where a competitor is the better buy.
How Restock Radar works
Three steps, then it runs on its own.
- Install from the App Store and start the 7-day trial. Billing is handled by Shopify; nothing is charged during the trial.
- Turn on the storefront widget. That is the theme app embed that renders the “notify me when back in stock” signup on sold-out products and variants. Skipping this is the most common silent failure in the whole category — billing is running while no shopper ever sees a signup — so Restock Radar's dashboard warns you when the widget is not live on your storefront and gives you a one-click fix.
- Set your alert email and your low-stock threshold. From then on shoppers get restock emails automatically, and you get a low-stock email the moment any product or variant crosses the number you set.
One more step we recommend and cannot do for you: place a real test signup on a sold-out product from a logged-out browser and confirm the email arrives. An alert app you have not tested is a belief, not a system.
Restock Radar pricing
No per-SKU limit. No per-variant limit. No notification tier. No higher plan holding features back, because there is no higher plan. A fair-use anti-spam limit applies.
There is no free plan. Several apps in this category do offer one, capped at a handful of notifications a month, and if your real question is “do shoppers even sign up when something sells out”, a free tier elsewhere is a perfectly sensible way to find that out for nothing. Our 7-day trial answers the same question in a week.
What Restock Radar does not do
Stated plainly, because you will find out anyway and it is better you find out here.
- No SMS and no push notifications. Email is the only channel.
- No free plan. A 7-day trial, then $6.99 a month.
- No preorders and no wishlist. Some apps in this category bundle those; Restock Radar does not, and we are not going to describe a back-in-stock app as a preorder app.
- No public reviews yet. The listing shows 0 reviews as of 2 August 2026. That is what a July 2026 launch looks like, and only time fixes it.
Is Restock Radar legit?
It is a publicly listed Shopify app that went through Shopify's app review and is installed from the App Store like any other, at apps.shopify.com/stockping-4, developer Stelar Digital LLC, launched 7 July 2026. Billing runs through Shopify, not through us, so your card details never touch our systems and you can cancel from your Shopify admin.
The company behind it is small and says so. One founder, built with AI tooling. Robert Dainowski owns Stelar Digital LLC and makes every money decision; AI tooling does the building and most of the operating.
What we cannot offer you yet is a review count. The listing has none. Weigh that honestly against the fact that everything else about the app is verifiable in public.
Was this app called StockPing?
Yes. Restock Radar is the app formerly listed as StockPing by Stelar Digital LLC, at apps.shopify.com/stockping-4, launched 7 July 2026. A different developer also uses the StockPing name for their own app, so we renamed ours in September 2026 to keep the two apart.
Same app, same developer, same listing — nothing else changed. The developer name on the listing, Stelar Digital LLC, is the reliable way to check which one you are installing.
Support
Support goes to Robert Dainowski, not a ticket queue. There is no outsourced tier one.
- Discord — discord.gg/7EzfKycwdn. Fastest, and you can see other people's questions.
- Email — stelardigital@stelardigital.com.
- App Store listing — the support section on the Restock Radar listing, plus our other apps on the Stelar Digital developer page.
Frequently asked questions
Is Restock Radar legit?
Yes. Restock Radar is a listed Shopify app, reviewed and published by Shopify on the public App Store at apps.shopify.com/stockping-4, launched 7 July 2026. It is built by Stelar Digital LLC, a registered US company at 3200 Pleasant Grove Blvd, 9111, Roseville, CA 95747, and the developer name shown on the listing is Stelar Digital LLC. The honest caveat: the listing is new, so it carries no public reviews yet. If a long review history is how you decide, that is a fair reason to wait or to pick an older app.
How much does Restock Radar cost?
One plan: Standard, $6.99 per month, with a 7-day free trial. There are no per-SKU, per-variant or per-notification tiers, and there is no more expensive plan holding features back — because there is no second plan. Billing runs through Shopify, in USD, every 30 days. A fair-use anti-spam limit applies. There is no free plan.
What does Restock Radar actually do?
Two things, in opposite directions. It adds a "notify me when back in stock" signup to sold-out products and variants on your storefront and emails those shoppers when you restock, and it emails you the moment any product or variant drops below your low-stock threshold. Both are in the single plan.
Does Restock Radar work on variants, or only whole products?
Every variant. The listing signup appears on each sold-out variant, not just on the product as a whole, so a shopper waiting on one size or colour is told about that one and not about a different variant coming back. This is worth checking on any app in this category before you install it — it is the most common disappointment.
Does Restock Radar send SMS or push notifications?
No. Email only. If your alerts have to go out by SMS or push, Restock Radar is the wrong app for you and one of the larger apps in this category is the better buy. We would rather say that here than have you find out after installing.
Does Restock Radar have reviews?
Not yet. The App Store listing shows 0 reviews as of 2 August 2026, because it launched in July 2026. We are not going to dress that up. What we can point at instead is a support channel where a real person answers.
How long does Restock Radar take to set up?
Minutes for most stores: install, enable the storefront widget, set your alert email and low-stock threshold. The step people skip is the last one — placing a real test signup on a sold-out product and confirming the email arrives. Do that before you trust it with real demand.
Was this app called StockPing?
Yes. Restock Radar is the app formerly listed as StockPing by Stelar Digital LLC, at apps.shopify.com/stockping-4. A different developer also uses the StockPing name, so we renamed ours in September 2026 to keep the two apart. Same app, same developer, same listing; nothing else changed.
How do I get support?
Three ways, all answered by Robert Dainowski, who builds and runs it: our Discord at discord.gg/7EzfKycwdn, email to stelardigital@stelardigital.com, or the support section on the App Store listing itself.
Who builds Restock Radar?
Stelar Digital LLC, built and run by Robert Dainowski. He owns the company and makes every money call; AI tooling does heavy lifting on building and support drafting.
Try it
Install Restock Radar on the Shopify App Store — $6.99/month, 7-day free trial, cancel from your Shopify admin. If it is the wrong fit, the comparison guide names which app to buy instead.
Pricing, plan name, launch date, review count and feature list on this page were read from the live Shopify App Store listing on 2 August 2026. Listings change — open the listing before you buy. Small by design. Built with AI tooling, run by a human who signs off on everything. — stelardigital.com