1. Listing metadata
Field-level data| Cart Lock | REZ Preorders, Back In Stock | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
| Cart Lock | REZ Preorders, Back In Stock | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
Sell preorders & backorders with full/partial payments. Auto send back-in-stock & coming soon alerts
| Metric | Cart Lock:Block Checkout Rules | REZ Preorders, Back In Stock |
|---|---|---|
| Rating | 4.7 ★ | ★ 5.0 ★ |
| Total reviews | 75 | ★ 825 |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free |
| Built for Shopify | — | ★ Yes |
| Pricing tiers | 4 tiers | — |
| Listed features | 5 | 5 |
| Languages | 1 supported | 1 supported |
| Listed since | Sep 2024 | May 2025 |
REZ Preorders, Back In Stock edges out Cart Lock:Block Checkout Rules on rating (5.0★ vs 4.7★), but the gap is small enough that pricing fit and feature differentiation should drive the decision more than the headline number. Pricing entry tiers: Cart Lock:Block Checkout Rules at Free plan available, REZ Preorders, Back In Stock at Free. 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. REZ Preorders, Back In Stock has the larger user base (825 reviews vs 75), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Cart Lock:Block Checkout Rules's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended by store size: small/early-stage merchants who need fast install and low risk should default to REZ Preorders, Back In Stock; mid-market and enterprise merchants with specific feature requirements should evaluate both — Cart Lock:Block Checkout Rules's 75-review base may include the workflow context that matches your specific use case better than REZ Preorders, Back In Stock's broader-but-shallower coverage. 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: Cart Lock:Block Checkout Rules audit • REZ Preorders, Back In Stock audit
| Keyword | Cart Lock | REZ Preorders, Back In Stock |
|---|---|---|
| support | Not ranked | #49 |
| forms | Not ranked | #93 |
| Not ranked | #208 |
No tracked changes.
Both Cart Lock:Block Checkout Rules and REZ Preorders, Back In Stock offer paid plans only. Cart Lock:Block Checkout Rules starts at Free plan available; REZ Preorders, Back In Stock starts at Free. Compare the per-tier features in the Pricing section above before committing.
REZ Preorders, Back In Stock has the higher average rating (5.0★ from 825 reviews) compared to Cart Lock:Block Checkout Rules (4.7★ from 75 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
It depends on what you're optimizing for. Cart Lock:Block Checkout Rules fits better if you prioritize broader integrations; REZ Preorders, Back In Stock is the call if you need the higher-rated option. 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. REZ Preorders, Back In Stock has more onboarding documentation maturity (825 reviews vs 75), 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.
Cart Lock:Block Checkout Rules typically suits early-stage and growth-mode stores based on its review-base composition (75 reviews). REZ Preorders, Back In Stock aligns more with early-stage and growth-mode stores (825 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. Cart Lock:Block Checkout Rules and REZ Preorders, Back In Stock 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 Cart Lock:Block Checkout Rules" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
