Quick Summary: If you have a Shopify website, a back-in-stock app lets customers sign up for notifications to be alerted when an item they wanted comes back in stock! This can help you recover lost sales and get those shoppers back into the store. By the way, the top five apps we cover are SB Coming Soon Product-PreSale, Notify! Back in Stock|PreOrder, Back In Stock Notify Me: Kbite, Preorder Back In Stock - STOQ, and Preorder Back in stock Duck. They all have easy setup, custom alerts, demand tracking tools, etc. You can increase your revenue by 10-20% by utilizing one of these back-in-stock apps with no additional ads. Pick the one that works for your store size and needs - email or SMS alerts.
Running a Shopify online store is exciting, but it can be a challenge sometimes. Imagine that a product you stocked sells out quickly! Your customers won't be happy and may look for that item elsewhere. That's when a back-in-stock app comes into play. A back-in-stock alert will send back-in-stock notifications to shoppers who weren't able to purchase an item. Changing an issue into an opportunity to generate more sales.
In this article, we'll explore the importance of back-in-stock apps for Shopify sellers. We'll also provide tips for picking the right one, as well as our Top 5 favorites. Each app includes its own section with an overview of how it works, features, and advantages. The writing will be simple and approachable, while also focusing on practical solutions for you and your store.
Why You Need a Back-in-Stock App for Your Shopify Store
Out-of-stock situations are inevitable at every online store. It is impossible to avoid. Our prior exploration indicates that, on average, there are 8% of items for sale out of stock in the e-commerce store. For every twelve items, one is out of stock. For Shopify users, this translates to lost revenue. In 2025, there are expected to be 2.77 billion online shoppers, and missed opportunities are not optimal for sales growth.
A back-in-stock application allows customers to join a waitlist when an item is out of stock in your online store. When the item is back in stock, it's easy to send out a quick notification, either by email or a text message. Users can be engaged back into the sales funnel without losing the shopper's interest.
For example, if you have a trending shirt that is selling out during a sale or promotion, on a Shopify back-in-stock application, you could send a notification back to the customer stating, "Your shirt is back!" This is an actionable notification encouraging trust and loyalty to your brand.
Those apps give you valuable information. If a lot of people subscribe to alerts on one item, you will know it is selling well. Next time, you will be able to get extra stock. Having these resources makes it easier for you to forecast and reduce spoilage.
Unfortunately, when you are busy, like during the holidays, stockouts will rise. An out-of-stock alert system is a backup up prevents missed sales. Shopify's built-in tools are easy to use and to install, so it does not take a long time to get up and running. Most people do not need any tech skills or code. Simply install and go into action.
If you do not have this tool, then it is acceptable to think that cart abandonment remains high around 70% of shoppers leaving without a purchase. Ultimately, with the tool, you have two ways for future sales. It helps manage your ups and downs in your inventory.
How to Choose the Best Shopify Back-in-Stock App
Hey guys, it doesn't have to be hard to choose the right back-in-stock app. First off, consider ease of use. You want apps that are easy to install, and in a matter of minutes, they should fit into your store's design. You want apps that are compatible with popular themes without any changes to the theme.
Check out their features next. Does the app send email alerts, text alerts, or both? If you want to brand the app, change the "Notify Me" phrase to your own for style. The best apps should integrate with third-party tools like Klaviyo or Mailchimp for better email notification tools, so users want to enter their email.
Think about how it integrates into your store; it should integrate live, so alerts are sent when the product arrives back in stock. You also want to see if it logs sign-ups on products, then you can determine popular products and gauge restock, like buzzy shoes.
Of course, Pricing comes into play, too. Most apps have a free plan option for the smaller store, but watch their limits. Example: limit on alerts sent out. Paid plans charge monthly or based on sales volume. Whatever you do, always look for value; don't just pick the cheapest option if it lacks the proper tools.
Check out reviews from other vendors. Generally, apps that are 4.5 stars or higher tend to work. Focus especially on the customer support notice, such as whether the vendor offers chat help when installing the app.
Last but not least, test for mobile use. Most customers are going to use their phone, so when a customer uses their phone to click buttons, fill out forms, etc, the app has to work seamlessly for their smaller screens. A major factor in choosing which app to use is making sure they are safe and secure for customer information.
By following these steps, I am confident you will find a Shopify back-in-stock app that meets your needs with no hassle.
Benefits of Back-in-Stock Alerts
Stock out alerts add real value for your Shopify store. To start with, they recover lost sales. When an item is restocked, the alert brings the customer back to actually purchase the item, which adds money to your store without spending money on more ads.
Second, these alerts make shopping more convenient for the user. Nobody likes waiting indefinitely and clicking over and over again on a website. An alert demonstrates to the shopper that you care about the purchase, which strengthens their relationship to your brand. The shopper feels as though their desire for the product was heard and validated.
Third, these alerts stimulate urgency. An alert about limited stock conveys that the product is special and may be a "once in a lifetime" deal. This can move the customer to make their purchase faster.
Fourth, the alerts help your planning. The sign-up numbers will tell you what your customers are most interested in. You can use this data as a guide for how many of an item to invest in for next time, reducing the risk of putting more into inventory or running out of stock.
Fifth, alerts reduce customer churn. 69% of customers will go to another store after learning an item is out. However, if the customer signs up for an alert, you might stop them from going to another store after their original visit. This is very beneficial during the high season.
Overall, a back-in-stock app takes the headache out of the process and turns it into valuable information. It also helps tighten up your operations and support more predictable growth.
Top 5 Back-in-Stock Apps for Shopify Sellers
Now, let's look at the five best back-in-stock apps, chosen specifically for their ratings, features, and how they improve a common frustration. We will look closely at how the app works, key features, and advantages for each. We will go over pros, cons, and pricing to assist you in making a decision.
1. SB Coming Soon Product-PreSale
This app shines for stores that want to build buzz before items arrive. It's a solid Shopify back-in-stock app for handling pre-sales and alerts.
How It Works
The app simply adds alert functionality in the form of buttons or signage that are placed on your product pages. When a product or a size is sold out, it will show a “Notify Me” button or notice. The customer can then enter their email to receive a notification of restock for that sold-out item. The app syncs back to your product stock levels, and when you replenish the item, it will send an alert automatically. It also syncs back to your email services to notify you of the message.
Key Features
"Notify Me" buttons and "Coming Soon" signs for products or groups.
Countdown clocks showing when items will arrive.
Auto-send alerts through tools like Mailchimp or Klaviyo.
Support for many languages and scheduled releases.
No limits on email sends, unlike some others.
Benefits
This app helps you create excitement to keep customers engaged in your store during a wait. The app allows you to build pre-orders of products prior to the inventory being ready. The integration is easy and simple, so you do not need any technical skills to set it up. The app works within the confines of your current store design. You will never lose a chance to alert someone of a sold-out item, as unlimited alerts mean you are always notifying customers.
Pros and Cons
Pros: Great for new product launches; builds hype with timers; works with top email apps; simple to use.
Cons: Free version covers only a few items.
Pricing and Ratings
Starts at $5.99 per month, with a free plan available. Rated 4.8 out of 5 from over 150 reviews.
2. Notify! Back in Stock|PreOrder
This app features alerts and lists. It’s a full-stack app to build your customer base.
How It Works
It identifies out-of-stock items and adds buttons immediately for "Notify Me" or "PreOrder" upon item search. Customers can sign up simply by entering their email or mobile number in the click-through notice. When stock is available, the service will send an email, SMS, and push notifications via mobile. The app can also accept partial payment on pre-orders.
Key Features
Wish lists that work for visitors without accounts.
Low-stock warnings to add urgency.
Custom messages that match your brand.
Links to workflows for smooth orders.
Benefits
You recover sales from lost opportunities and find out what your customers like best. The wish lists bring people back more frequently. It saves time from having to regularly check stock and helps you plan better for stock. The multi-modal alerts go to where your customers are.
Pros and Cons
Pros: Endless pre-orders on higher plans; alerts in many forms; promise of good returns.
Cons: Free plan limits to 10 alerts; costs more for big stores.
Pricing and Ratings
From $9.90 per month, free plan included. 4.9 stars from more than 2,545 users.
3. Back In Stock, Notify Me: Kbite
Kbite is all about speed and smart tracking. The app serves as a back-in-stock email list that is built for Shopify merchants to gain data instantly.
How It Works
Kbite puts your customized "Notify Me" buttons on empty shelves for your shoppers. Once shoppers opt in, you can track your inventory levels. When products are restocked, it - time to get the email out. Kbite is a powerful tracking tool that also tracks price drops and sends users an alert for those lists. For in-demand items, waitlists are automatically built.
Key Features
Auto-notices for restocks and price changes.
Tools to see which products get the most sign-ups.
Easy link to your email lists.
Fast setup in seconds.
Benefits
This keeps your shoppers coming back and also builds your growing contact lists. Intelligence reports indicate top sellers, so stocking gets easier. Your custom design keeps it on-brand, and the cost of text is extremely low. Kbite is perfect for all sizes of stores.
Pros and Cons
Pros: Free plan allows endless sign-ups, cheap texts, and is super simple.
Cons: Free has app branding; basic plans cap emails at 30 alerts.
Pricing and Ratings
Begins at $5 per month, free option, yes. A perfect 5 stars from 2,863 reviews.
4. Preorder, Back In Stock - STOQ
STOQ meets global needs well, with good integration with other tools. This back-in-stock app works better for stores everywhere.
How It Works
Adds waitlist or pre-order buttons to out-of-stock spaces, allowing customers to sign up or pay a small amount up front. Once the item comes back in stock, it's easy to send notifications through text or email. STOQ works seamlessly across multiple stores and keeps a close eye on the stock and variants.
Key Features
Deposits for pre-buys.
Auto-alerts that fit your style.
Sync with Klaviyo for emails.
Tracking for out-of-stock trends.
Benefits
What that does is open pre-sale cash flow earlier and grow your lists. Analytics will provide insight into your customers' buying patterns so you can make better buying decisions. Plus, there are no added fees associated with orders helps maintain more profit, and 24/7 support ensures the issue is fixed in no time at all, which helps stores with staff in multiple time zones.
Pros and Cons
Pros: Zero fees on pro level; endless use there; always-on support.
Cons: Texts cost extra; free caps at 30 notices.
Pricing and Ratings
$10 per month start, free plan offered. 5 stars from over 2,183 reviews.
5. Preorder, Back in stock Duck
Duck includes fun channels like WhatsApp. This back-in-stock app is beginner-friendly for new sellers.
How It Works
It offers a pre-order or notify option on sold-out pages and emails or WhatsApp messages after sign-up. Control the options per product type and Duck tracks demand stats.
Key Features
Pre-buys for missing items.
Variant-specific watches.
WhatsApp and Klaviyo links.
Auto-handles restock news.
Benefits
You get to pull in sales before the product is available in stock and have a clear view of demand. There is an option to connect with customers on how to get alerts, based on what best fits their habits. The setup is very simple for beginners, and a live helpline is available anytime. Duck has no fees for a limited.
Pros and Cons
Pros: WhatsApp option; free from order fees in bounds; chat support 24/7.
Cons: Branding on free; 30-alert limit there.
Pricing and Ratings
Starts at $10 monthly, free, yes. 5 out of 5 from 325 reviews.
Key Takeaways
A back-in-stock app recovers up to 20% of lost sales by sending timely alerts.
Pick based on needs: Pre-sales for launches (SB Coming Soon), data for planning (Kbite), or global reach (STOQ).
Most offer free trials with limited testing before paying.
Integrate with email tools like Klaviyo for better results.
Simple English setups mean anyone can use them, boosting loyalty without effort.
Track sign-ups to improve stock choices and cut waste.
Wrapping It Up: Pick Your Back-in-Stock Ally Today
Stock-outs don’t have to hurt your Shopify store. A good back-in-stock app, along with back-in-stock alerts, can keep customers engaged and sales coming in. From building excitement with timers to convenient demand by waitlists, these features ultimately fix real problems.
Take a look at the top five, some awesome solutions: each of them works differently, suiting the individual store style from small to large. When you try one of these back-in-stock apps, you can begin with a free plan and see what feels right. Over time, you will see happier shoppers and more consistent revenue.
Ready to begin? Go to the Shopify app store and install one. Your secret weapon for product availability is waiting.
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