6 Amp Back in Stock alternatives for Shopify in 2026

If you use Amp Back in Stock & Preorder + and its notification caps, plan prices or Klaviyo access are starting to pinch, or you are weighing it against other restock alert apps, this guide compares six alternatives on the same criteria. Amp Back in Stock & Preorder + is a long-running, well-reviewed app, so switching only makes sense when another app fits your store better.

Quick answer: Preorder, Back In Stock ‑ STOQ is the strongest Amp Back in Stock alternative for most stores. It has a 5.0 rating from 3,915 reviews and the Built for Shopify badge, and its $10 Lite plan includes all features, Klaviyo sync among them.

Why merchants look for Amp Back in Stock & Preorder + alternatives

Merchants look for Amp Back in Stock & Preorder + alternatives mainly because of price and plan limits, not because the app is weak. The listing shows a few clear pressure points:

• Klaviyo and Mailchimp integration starts at the $49/month Growth plan.
• Shopify Plus stores pay more on every paid plan: $49, $99 and $299 a month instead of $19, $49 and $99.
• The free plan includes only 10 notifications a month.
• SMS is priced by destination country, on top of the plan fee.

On reviews, we could only read about 20 recent ones, because the one and two star filter did not load. Of those, one long-time user said the app keeps having problems whenever they need it and planned to switch. Another, otherwise positive, asked for a way to show an estimated restock date. That sample is too small to call a pattern.

Amp Back in Stock & Preorder + also does a lot well. It has been on the App Store since 2011, says it serves more than 25,000 brands, holds a 4.9 rating from 1,004 reviews and carries the Built for Shopify badge. Positive reviews praise its reliability over many years, demand reporting for planning reorders and production, first-in, first-out alert controls, HTML and Liquid email templates, suggestions of similar products when an item will not return, and fast support. Paid plans add preorders that collect payment before stock arrives, and the Pro plan adds API access, webhooks and ChatGPT and Claude integration. If you lean on those reports and controls and the price works for you, staying is a sensible choice.

Amp Back in Stock & Preorder + alternatives compared

The table below compares Amp Back in Stock & Preorder + with six alternatives on free plan limits, starting paid price and App Store rating.

How we compared: we read each app's Shopify App Store listing in November 2026, plus a sample of about 20 recent reviews for Amp Back in Stock & Preorder + (the low-star filter did not load, so we could not read its low-star reviews in full). Prices and ratings can change, and several listings showed Black Friday promo pricing at the time, so check each listing before you decide.

The alternatives in detail

The six Amp Back in Stock & Preorder + alternatives below are ordered by how well they serve most stores on the listing evidence: rating, review count, Built for Shopify status, features and price.

Preorder, Back In Stock ‑ STOQ

Preorder, Back In Stock ‑ STOQ by Artos Software covers the same two jobs as Amp Back in Stock & Preorder +, restock alerts and preorders, at lower prices and with fewer features held back for higher plans. It shows a Notify Me or Preorder widget on out-of-stock products, sends automatic back in stock emails and SMS, and handles preorders, presales and backorders with deposits or partial payment. The listing also includes B2B preorders, multiple locations, Markets support and 24 languages, plus Klaviyo sync and compatibility with Omnisend, Mailchimp, Shopify Flow and POS. It has the Built for Shopify badge and 24/7 live chat even on the free plan.

• Pricing: Free (10 preorders and 30 emails a month). Lite $10/month (100 preorders, 1,000 emails or SMS, all features, branding removed). Pro $29/month (400 preorders, 3,000 emails or SMS). Unlimited $69/month. SMS costs $0.025 each, and preorders above the limit cost $0.25 on Lite or $0.10 on Pro. 14-day free trial. The listing showed a Black Friday discount code when we read it.
• Best for: Stores that want preorders and restock alerts in one app, with Klaviyo included from the first paid plan.
• Watch out for: The free plan covers only 30 emails a month, and SMS and extra preorders are billed on top of the plan.
• Preorder, Back In Stock ‑ STOQ on the Shopify App Store

Notify Me! Back in Stock Alert

Notify Me! Back in Stock Alert has the most reviews of any app here (4,006, rated 4.9) and adds WhatsApp alerts and a guest wishlist to the restock and preorder features Amp Back in Stock & Preorder + offers. Alerts go out by email, SMS, push or WhatsApp. It supports preorders with partial payment and presale for D2C or B2B, low stock alerts and a widget, and a guest wishlist on home, collection and product pages with customer account extensions. The listing also mentions an API and MCP connection integrated with Sidekick, free 1:1 onboarding and 13 languages. It carries the Built for Shopify badge.

• Pricing: Lite is free (10 restock notifications, 5 preorders, 50 wishlist actions). Kickstart $9.90/month or $79.21/year (500 alerts, 500 preorders, 2,000 wishlist actions, full customisation, partial pay). Starter $19.90/month or $159.23/year (adds reports and page-builder integration). Standard $39.90/month or $319.26/year (1,500 alerts and preorders, collection page widgets, priority support). Unlimited plans are offered inside the app. 7-day free trial. Promo pricing was showing at the time.
• Best for: Merchants who want restock alerts, preorders, low stock alerts and a wishlist in a single app.
• Watch out for: Collection page widgets are only on the $39.90 Standard plan, and the free plan covers just 10 restock notifications.
• Notify Me! Back in Stock Alert on the Shopify App Store

If the wishlist side matters most to you, our comparison of the best wishlist apps for Shopify goes deeper on that feature.

Appikon ‑ Back In Stock

Appikon ‑ Back In Stock by Appikon Software Pvt Ltd is a focused restock alert app, rated 4.8 from 1,458 reviews, that opens Klaviyo and Mailchimp on its first paid plan instead of a $49 tier. It sends automatic back in stock alerts and back order reminders by email and SMS, offers a customisable signup form, product waitlists and demand analytics, and works with Klaviyo, Mailchimp, PushOwl, Wiser and Zapier. The listing says setup takes under two minutes with no coding. Unlike Amp Back in Stock & Preorder +, it does not list preorders or low stock badges, and it does not show the Built for Shopify badge.

• Pricing: Free to install (10 emails a month). Starter $19.99/month or $192/year (300 emails, Klaviyo and Mailchimp, custom theme support, multiple languages, data export). Pro $29.99/month or $287.90/year (1,000 emails, collection page integration). Premium $49.99/month or $479.90/year (3,000 emails, countdown timer). SMS costs $0.05 to $0.40 per message depending on length. 7-day free trial.
• Best for: Stores that only need restock alerts and want a simple app with a long track record.
• Watch out for: Collection page integration needs the $29.99 Pro plan, SMS is billed per message, and the email allowance per dollar is lower than most apps here.
• Appikon ‑ Back In Stock on the Shopify App Store

Back In Stock Alert‑ Notify Me

Back In Stock Alert‑ Notify Me by SetuBridge has the cheapest paid plans in this comparison, starting at $4.99/month, and is rated 4.8 from 213 reviews with the Built for Shopify badge. It places a Notify Me button on products, variants and collection pages and sends restock alerts by email, WhatsApp or push. Paid plans add preorder buttons, scheduled product launches and inventory protection against overselling. You can send email from your own domain through SMTP, and it integrates with Klaviyo, Mailchimp, Omnisend, Brevo and Twilio.

• Pricing: Lite is free (50 email alerts a month, up to 10 products, $1 per 50 extra emails). Basic $4.99/month (500 alerts, up to 100 products, preorders, multi-language). Growth $7.99/month (2,000 alerts, up to 1,000 products, SMTP, Klaviyo and Mailchimp). Premium $15.99/month (5,000 alerts, unlimited products, business intelligence report, dedicated account manager). 7-day free trial.
• Best for: Small stores that want the lowest monthly cost and email sent from their own domain.
• Watch out for: Every plan below Premium caps the number of products (10, 100 or 1,000). SMS is not in the listed alert channels.
• Back In Stock Alert‑ Notify Me on the Shopify App Store

Back in Stock, Notify Me: Stok

Back in Stock, Notify Me: Stok by PantherCodX LLP adds price drop and sales alerts to restock alerts and preorders, at lower prices than Amp Back in Stock & Preorder +. Its free plan already includes back in stock, price drop and sales alerts, one preorder offer, unlimited subscribers, repeat reminders, and widgets on product and collection pages. Paid plans add SMS and WhatsApp, preorders with deposits, partial payments and backorders, 27 languages, POS support and Klaviyo. It has the Built for Shopify badge and a 4.8 rating, but from a smaller base of 124 reviews.

• Pricing: Free (20 emails a month, 1 preorder offer for 10 orders a month). Plus $10/month (email, SMS and WhatsApp, 3 preorder offers, 100 emails). Pro $20/month (multi-language, own sending domain, POS, Klaviyo, CSV export, 5,000 emails). Business $49.99/month (own WhatsApp Business account, unlimited preorder offers, product recommendations, 20,000 emails). SMS and WhatsApp start at $0.02. 7-day free trial. Promo pricing was showing for the first two months.
• Best for: Budget-minded stores that want price drop and WhatsApp alerts alongside restock alerts.
• Watch out for: Klaviyo and multi-language are only on the $20 Pro plan, and the review base is the smallest of the established apps here.
• Back in Stock, Notify Me: Stok on the Shopify App Store

Themivo Wishlist & Alerts

Disclosure: Themivo, our sister studio, makes this app.

Themivo Wishlist & Alerts is a free wishlist app that sends back in stock, price drop, low stock and reminder emails for products shoppers have saved, so it overlaps with Amp Back in Stock & Preorder + on alerts but approaches them from the wishlist side. Guests can save products without an account, and their wishlist carries over when they sign in. Alerts can be sent directly or through Klaviyo, Omnisend or Shopify Flow, which matters because Amp gates Klaviyo behind its $49 plan. Reports show the most saved products and orders that came from a wishlist. Wishlist buttons are styled to match your theme in a live preview, and wishlists can be shared and used with POS.

• Pricing: Free, with no paid plans listed.
• Best for: Stores that want a wishlist plus stock and price drop emails at no cost, and do not need preorders.
• Watch out for: It launched in October 2026 and has no reviews yet, so there is far less evidence than for every other app here. It does not offer preorders, SMS or WhatsApp, alerts are tied to saved products, and it is not a full email marketing tool.
• Themivo Wishlist & Alerts on the Shopify App Store

Should you switch?

You should stay on Amp Back in Stock & Preorder + if its demand reports and alert controls are central to how you plan stock, and switch if price, plan limits or a missing channel are the main problem.

• Stay on Amp Back in Stock & Preorder + if you rely on demand reporting, first-in, first-out alerts, Liquid email templates, or the API, webhooks and AI assistant integrations on Pro.
• Preorder, Back In Stock ‑ STOQ if you want restock alerts, preorders and Klaviyo without paying $49 a month.
• Notify Me! Back in Stock Alert if you want WhatsApp alerts and a guest wishlist in the same app as preorders.
• Appikon ‑ Back In Stock if you only need restock alerts and want Klaviyo or Mailchimp from the first paid plan.
• Back In Stock Alert‑ Notify Me if your catalog is small and the lowest monthly price matters most.
• Back in Stock, Notify Me: Stok if you want price drop and WhatsApp alerts on a budget, with collection page widgets on the free plan.
• Themivo Wishlist & Alerts if a wishlist is your main goal and free stock and price drop emails for saved products cover your needs.
• Swym Back in Stock Alerts may suit larger brands on enterprise tools such as Bluecore, Bloomreach or Listrak. It is rated 4.5 from 445 reviews, has no free plan and starts at $19.99/month. See its listing.

Frequently asked questions

Is there a free back in stock app for Shopify?

Yes, every app in this comparison has a free plan, but most free plans are tightly capped. Back In Stock Alert‑ Notify Me allows 50 emails a month for up to 10 products, Preorder, Back In Stock ‑ STOQ allows 30 emails, Back in Stock, Notify Me: Stok allows 20, and Amp Back in Stock & Preorder +, Notify Me! Back in Stock Alert and Appikon ‑ Back In Stock allow 10. Themivo Wishlist & Alerts is free with no paid plans listed, but its alerts cover saved wishlist products and it has no reviews yet.

Does Amp Back in Stock work with Klaviyo?

Yes, Amp Back in Stock & Preorder + integrates with Klaviyo and Mailchimp, but only from the Growth plan at $49/month ($99 for Shopify Plus stores). Preorder, Back In Stock ‑ STOQ includes Klaviyo sync from its $10 Lite plan, Back In Stock Alert‑ Notify Me from its $7.99 Growth plan, and Appikon ‑ Back In Stock from its $19.99 Starter plan. Themivo Wishlist & Alerts can send its alerts through Klaviyo on its free plan.

Which back in stock apps also take preorders?

Amp Back in Stock & Preorder +, Preorder, Back In Stock ‑ STOQ, Notify Me! Back in Stock Alert, Back in Stock, Notify Me: Stok and Back In Stock Alert‑ Notify Me all list preorders. STOQ, Notify Me! and Stok mention partial payment or deposits. Appikon ‑ Back In Stock lists back order reminders and waitlists but not preorders, and Themivo Wishlist & Alerts does not offer preorders.

Can I send restock alerts on WhatsApp in Shopify?

Yes, three apps here list WhatsApp restock alerts: Notify Me! Back in Stock Alert, Back in Stock, Notify Me: Stok (from the $10 Plus plan) and Back In Stock Alert‑ Notify Me (from the $4.99 Basic plan). Amp Back in Stock & Preorder + lists email, SMS and push, and Preorder, Back In Stock ‑ STOQ lists email and SMS.

What is the cheapest alternative to Amp Back in Stock?

Themivo Wishlist & Alerts is free, but it is a wishlist-led app without preorders or SMS. Among full restock alert apps, Back In Stock Alert‑ Notify Me has the lowest paid plan at $4.99/month, though it caps the number of products. Notify Me! Back in Stock Alert starts at $9.90/month and Preorder, Back In Stock ‑ STOQ and Back in Stock, Notify Me: Stok at $10/month, compared with $19/month for Amp Back in Stock & Preorder +.

Before you switch

Before you switch from Amp Back in Stock & Preorder +, plan how you will keep your current waiting list and avoid sending shoppers duplicate alerts.

1. Try the new app on a development store or an unpublished copy of your theme first, and check the Notify Me button on product pages, collection pages and every variant.
2. Find out whether you can export the shoppers currently waiting for restocks, and ask the new app's support whether they can import them. Losing that list means losing sales from your most interested shoppers.
3. Compare total cost at your real volume: monthly alerts, SMS or WhatsApp fees per message, preorder overage fees and, if you are on Shopify Plus, the higher Amp pricing you would leave behind.
4. Confirm that your email or SMS tool is supported on the exact plan you plan to pay for, not just somewhere on the listing.
5. Recheck any promo prices, since several listings were running Black Friday offers in November 2026.
6. Once the new app is live, turn off alerts in the old app, then uninstall it and check your theme for leftover buttons or forms.

If you run a small catalog and mostly want lower costs, start with the free plan of the alternative that matches your must-have feature, and only move your waiting list once you are happy with how it works on your theme.