Side-by-side comparison · 24 data points
Notify customers by restock alert when items are back in stock & create an out-of-stock waitlist.
| Back In Stock! Alert Engine | Omnisend | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
| Metric | Back In Stock! Alert Engine | Omnisend Email Marketing & SMS |
|---|---|---|
| Rating | ★ 4.8 ★ | 4.7 ★ |
| Total reviews | 21 | ★ 3k |
| Free plan | Yes | Yes |
| Pricing | Free trial available | Free to install |
| Built for Shopify | — | — |
| Pricing tiers | — | 3 tiers |
| Listed features | 5 | 5 |
| Featured placements | — | 2 |
| Languages | 1 supported | 1 supported |
| Listed since | Dec 2024 | Mar 2014 |
Back In Stock! Alert Engine and Omnisend Email Marketing & SMS are evenly matched on rating (4.8★ vs 4.7★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow. Pricing entry tiers: Back In Stock! Alert Engine at Free trial available, Omnisend Email Marketing & SMS at Free to install. 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. Omnisend Email Marketing & SMS has the larger user base (2,983 reviews vs 21), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Back In Stock! Alert Engine'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: Back In Stock! Alert Engine audit • Omnisend Email Marketing & SMS audit
| Keyword | Back In Stock! Alert Engine | Omnisend |
|---|---|---|
| email list with | #10 | #3 |
| price drop | #24 | #4 |
| #61 | #4 |
Not featured in any section recently.
Both Back In Stock! Alert Engine and Omnisend Email Marketing & SMS offer paid plans only. Back In Stock! Alert Engine starts at Free trial available; Omnisend Email Marketing & SMS starts at Free to install. Compare the per-tier features in the Pricing section above before committing.
Back In Stock! Alert Engine (4.8★, 21 reviews) and Omnisend Email Marketing & SMS (4.7★, 2,983 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. Back In Stock! Alert Engine fits better if you prioritize rating consistency; Omnisend Email Marketing & SMS 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. Omnisend Email Marketing & SMS has more onboarding documentation maturity (2,983 reviews vs 21), 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.
Back In Stock! Alert Engine typically suits early-stage and growth-mode stores based on its review-base composition (21 reviews). Omnisend Email Marketing & SMS aligns more with early-stage and growth-mode stores (2,983 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. Back In Stock! Alert Engine and Omnisend Email Marketing & SMS 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 Back In Stock! Alert Engine" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
