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| Amp | Early Bird | |
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| Screenshots | images | images |
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Run preorder campaigns with partial pay, take backorders & send back-in-stock alerts to secure sales
| Metric | Amp: Back in Stock & PreOrder+ | Early Bird: Preorder & Restock |
|---|---|---|
| Rating | 4.9 ★ | 4.9 ★ |
| Total reviews | ★ 886 | 70 |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free plan available |
| Built for Shopify | Yes | Yes |
| Pricing tiers | 4 tiers | 4 tiers |
| Listed features | 5 | 5 |
| Languages | 1 supported | 1 supported |
| Listed since | May 2011 | Jun 2024 |
Amp: Back in Stock & PreOrder+ and Early Bird: Preorder & Restock are evenly matched on rating (4.9★ vs 4.9★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow. Pricing entry tiers: Amp: Back in Stock & PreOrder+ at Free plan available, Early Bird: Preorder & Restock at Free plan available. Check each app's tier structure for the capacity limits you actually need before deciding — the headline number is the same shape, but the gating shape per tier (apps, orders, integrations) varies. Amp: Back in Stock & PreOrder+ has the larger user base (886 reviews vs 70), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Early Bird: Preorder & Restock's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort of orders for 7-14 days before committing. The data tables below show the per-feature breakdown — for most merchants the deciding factor will be a single integration or workflow detail that's hard to compare from listing pages alone. This verdict is generated from the live marketplace data on this page — rating, review count, pricing tier, and category position all refresh from the canonical Shopify App Store listing every 24 hours. AppRanks does not accept payment to influence comparison outcomes; the methodology is documented on the About page and applies identically to every pair on the site.
Read each app's audit: Amp: Back in Stock & PreOrder+ audit • Early Bird: Preorder & Restock audit
| Keyword | Amp | Early Bird |
|---|---|---|
| preorder | #10 | #13 |
| pre-orders | #11 | #19 |
| alert | #12 | #18 |
| alerts | #14 | #16 |
| restock | #24 | #8 |
Both Amp: Back in Stock & PreOrder+ and Early Bird: Preorder & Restock offer paid plans only. Amp: Back in Stock & PreOrder+ starts at Free plan available; Early Bird: Preorder & Restock starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.
Amp: Back in Stock & PreOrder+ (4.9★, 886 reviews) and Early Bird: Preorder & Restock (4.9★, 70 reviews) are essentially tied on rating. Look at review velocity and individual reviewer quotes — both visible on each app's detail page — to differentiate.
It depends on what you're optimizing for. Amp: Back in Stock & PreOrder+ fits better if you prioritize broader integrations; Early Bird: Preorder & Restock is the call if you need the larger user base. Read both apps' detail pages on AppRanks for the full feature breakdown, install counts, and recent listing changes.
Both apps are one-click installs from the Shopify App Store marketplace. Amp: Back in Stock & PreOrder+ has more onboarding documentation maturity (886 reviews vs 70), which usually translates to better-tested setup wizards and quicker time-to-value. AppRanks doesn't measure setup time directly — read the recent reviews on each app's detail page for merchant-reported install experience.
Amp: Back in Stock & PreOrder+ typically suits early-stage and growth-mode stores based on its review-base composition (886 reviews). Early Bird: Preorder & Restock aligns more with early-stage and growth-mode stores (70 reviews). Larger review bases generally mean the app has been load-tested at scale — relevant if you're processing high order volume or handling enterprise compliance requirements.
Migration support varies by app and category. Amp: Back in Stock & PreOrder+ and Early Bird: Preorder & Restock both publish their export options on their marketplace listing pages (or in their support docs); some apps offer one-click import from competitors, others require CSV. The fastest check: search "import from Early Bird: Preorder & Restock" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
