Side-by-side comparison · 24 data points
Notify customers when products are back in stock and manage an out-of-stock waitlist.
| Essential ‑ Back In Stock Pro | Out Of Stock Alert Restock Lab | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
Smart inventory management with real-time alerts, automation, & analytics for zero stock-out issues.
| Metric | Essential ‑ Back In Stock Pro | Out Of Stock Alert Restock Lab |
|---|---|---|
| Rating | 4.9 ★ | ★ 5.0 ★ |
| Total reviews | 20 | ★ 31 |
| Free plan | Yes | Yes |
| Pricing | Free | Free |
| Built for Shopify | — | — |
| Pricing tiers | — | 1 tier |
| Listed features | 5 | 5 |
| Languages | 1 supported | 1 supported |
| Listed since | Jul 2024 | Feb 2026 |
Essential ‑ Back In Stock Pro and Out Of Stock Alert Restock Lab are evenly matched on rating (4.9★ vs 5.0★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow.
Pricing entry tiers: Essential ‑ Back In Stock Pro at Free, Out Of Stock Alert Restock Lab 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 (seats, usage volume, integrations) varies.
Recommended evaluation path: install both apps' free tiers (where available) and run them in parallel on a small cohort 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: Essential ‑ Back In Stock Pro audit • Out Of Stock Alert Restock Lab audit
| Keyword | Essential ‑ Back In Stock Pro | Out Of Stock Alert Restock Lab |
|---|---|---|
| inventory planning | Not ranked | #15 |
| inventory optimization | Not ranked | #17 |
| inventory forecasting | Not ranked | #18 |
| back in stock | #24 | Not ranked |
Both Essential ‑ Back In Stock Pro and Out Of Stock Alert Restock Lab offer paid plans only. Essential ‑ Back In Stock Pro starts at Free; Out Of Stock Alert Restock Lab starts at Free. Compare the per-tier features in the Pricing section above before committing.
Essential ‑ Back In Stock Pro (4.9★, 20 reviews) and Out Of Stock Alert Restock Lab (5.0★, 31 reviews) are essentially tied on rating. Look at review velocity and individual reviewer quotes — both visible on each app's detail page — to differentiate.
Out Of Stock Alert Restock Lab holds the higher average rating (5.0★ vs 4.9★). That is the one dimension AppRanks can separate them on here — read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the Shopify App Store. Out Of Stock Alert Restock Lab has the deeper published review base (31 vs 20), which often — though not always — accompanies better-tested setup docs. AppRanks doesn't measure setup time directly: read the recent reviews on each app's detail page for user-reported install experience.
Essential ‑ Back In Stock Pro typically suits early-stage and growth-mode teams based on its published review base (20 reviews). Out Of Stock Alert Restock Lab typically suits early-stage and growth-mode teams based on its published review base (31 reviews). A larger review base generally means the app has been exercised at scale — relevant if you are processing high volume or handling enterprise compliance requirements.
Migration support varies by app and category. Essential ‑ Back In Stock Pro and Out Of Stock Alert Restock Lab 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 Essential ‑ Back In Stock Pro" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
