Back in Stock vs. Competitors — 2026 Comparison
Back in Stock by Amp is the original Shopify back-in-stock app — launched in 2011, with 112,000+ installs, a 4.9★ rating from 820+ reviews, flat pricing with no automatic overage fees, and full-funnel coverage from demand capture through preorders and analytics. Below is a full feature-and-pricing matrix against every major alternative, plus an individual verdict page for each matchup.
Full feature comparison
 Back in StockRecommended |  Notify Me!Competitor |  STOQCompetitor |  KbiteCompetitor |  REZCompetitor |  EssentCompetitor | |
|---|---|---|---|---|---|---|
| In market since | 2011 | 2020 | 2021 | 2021 | 2025 | 2024 |
| Free plan | Yes | Yes | Yes | Yes | Yes | Yes |
| Pricing model | Flat + opt-in top-ups | Usage-based overages | Usage-based overages | Flat tiers | Usage-based overages | Usage-based overages |
| Preorders | Yes | Yes | Yes | No | Yes | Yes |
| Notification channels | Email, SMS, Push | Email, SMS, Push | Email, SMS | Email, SMS (push unverified) | ||
| Wishlist module | Coming soon | Yes | No | No | No | No |
| Low-stock badges | Coming soon | Yes | — | — | — | — |
| Multi-language | Yes | Yes | — | Yes | — | Yes |
| Built for Shopify | Yes | Yes | Yes | Yes | Yes | Yes |
| Try Back in Stock for Free | Full comparison | Full comparison | Full comparison | Full comparison | Full comparison |
All competitor figures verified against each app's own Shopify App Store listing on July 29, 2026. Review counts and pricing in this category change frequently — check the App Store for current details. "—" means unverified, not absent.
All competitor figures verified against each app's own Shopify App Store listing on July 29, 2026. Review counts and pricing in this category change frequently — check the App Store for current details. "—" means unverified, not absent.
Individual comparisons
Back in Stock vs Notify Me! → Back in Stock vs STOQ → Back in Stock vs Kbite → Back in Stock vs REZ → Back in Stock vs Essent → Looking for pricing details first? See the full Back in Stock pricing breakdown — four flat tiers from $0 to $99/month, all prices in plain text.
Frequently Asked Questions
What is the best Shopify back-in-stock app?
Back in Stock by Amp is the original Shopify back-in-stock app, launched in 2011 — nine to fourteen years before the alternatives in this comparison. It covers the full demand lifecycle (capture, notify via email/SMS/push, preorders, analytics), holds Built for Shopify status with a 4.9★ rating from 820+ reviews, and has been used by 112,000+ merchants. Notify Me! and STOQ are the strongest alternatives.
How does Back in Stock pricing compare to alternatives?
Back in Stock uses flat tiers (Free / $19 / $49 / $99 per month) with optional, opt-in notification top-ups. Notify Me!, STOQ, REZ, and Essent all apply automatic usage-based overage fees — per-preorder or per-notification charges added to your bill the moment you cross your plan cap. SMS is billed per message across the whole category, including by Back in Stock.
Which Shopify restock alert apps support preorders?
Back in Stock, Notify Me!, STOQ, REZ, and Essent all offer preorders. Kbite does not — its Shopify listing covers stock alerts only. Back in Stock includes preorders with full payment, partial deposit, or discount-based incentives from the Starter plan ($19/month) up.
Which back-in-stock apps send SMS and push notifications?
Back in Stock and Notify Me! both deliver restock alerts via email, SMS, and web push. STOQ and Kbite support email and SMS. REZ and Essent list email delivery only on their Shopify listings.