Side-by-side comparison · 24 data points
Trusted by 3,000+ brands to grow email revenue with templates, flows and popups. Works with Klaviyo.
| Grid & Pixel | Preorder, Back In Stock REZ | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer |
Sell preorders & backorders with full/partial payments. Auto send back-in-stock & coming soon alerts
| Metric | Grid & Pixel Email‑SMS‑Popups | Preorder, Back In Stock REZ |
|---|---|---|
| Rating | 4.7 ★ | ★ 5.0 ★ |
| Total reviews | 188 | ★ 1.5k |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free plan available |
| Built for Shopify | Yes | Yes |
| Pricing tiers | 2 tiers | ★ 4 tiers |
| Listed features | 4 | ★ 5 |
| Featured placements | 1 | ★ 2 |
| Review velocity (30d) | 9 new | — |
| Languages | 1 supported | 24 supported |
| Listed since | Jun 2023 | May 2025 |
Preorder, Back In Stock REZ edges out Grid & Pixel Email‑SMS‑Popups 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: Grid & Pixel Email‑SMS‑Popups at Free plan available, Preorder, Back In Stock REZ 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 (seats, usage volume, integrations) varies.
Preorder, Back In Stock REZ has the larger user base (1,528 reviews vs 188), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Grid & Pixel Email‑SMS‑Popups's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat.
Recommended by size: small/early-stage merchants who need fast install and low risk should default to Preorder, Back In Stock REZ; mid-market and enterprise merchants with specific feature requirements should evaluate both — Grid & Pixel Email‑SMS‑Popups's 188-review base may include the workflow context that matches your specific use case better than Preorder, Back In Stock REZ'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: Grid & Pixel Email‑SMS‑Popups audit • Preorder, Back In Stock REZ audit
| Listed |
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| Last updated | — | — |
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| Keyword | Grid & Pixel | Preorder, Back In Stock REZ |
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| #22 | #216 |
| Signal | Grid & Pixel | Preorder, Back In Stock REZ |
|---|---|---|
| Average rating | 4.7 ★ (188) | 5.0 ★ (1.5k) |
| Rating distribution | 596% 40% 32% 22% 11% | 5— 4— 3— 2— 1— |
| Reviews · last 7 days | +0 | — |
| Reviews · last 30 days | +9 | — |
| Reviews · last 90 days | +16 | — |
Both Grid & Pixel Email‑SMS‑Popups and Preorder, Back In Stock REZ offer paid plans only. Grid & Pixel Email‑SMS‑Popups starts at Free plan available; Preorder, Back In Stock REZ starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.
Preorder, Back In Stock REZ has the higher average rating (5.0★ from 1,528 reviews) compared to Grid & Pixel Email‑SMS‑Popups (4.7★ from 188 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
Preorder, Back In Stock REZ holds the higher average rating (5.0★ vs 4.7★). 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. Preorder, Back In Stock REZ has the deeper published review base (1,528 vs 188), 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.
Grid & Pixel Email‑SMS‑Popups typically suits early-stage and growth-mode teams based on its published review base (188 reviews). Preorder, Back In Stock REZ typically suits early-stage and growth-mode teams based on its published review base (1,528 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.
I have been working with Grid and Pixel now for several months and they are very responsive to my feedback in tweaking campaigns and the pursuit to get more sales. Speaking of value, they are a great value for what you get. Good communication and their responses indicate they really know their craft.
We have been working with Grid and Pixel for about 3 months and have been very happy with both the ROI as well as the attention to our needs. They have greatly improved our email account health and have brought in fresh ideas. It is great working directly with people that listen to us regarding the direction of our c
Been working with them for almost 6 months now. Great campaigns and email flows, edits made quickly, campaigns made quickly and most importantly great results from them! Such an affordable way to get all your email marketing delegated I am only disappointed I didn’t know about them sooner!
As a small eCommerce business, services like those provided by Grid & Pixel are invaluable. They have been wonderful to work with. They set up our email flows, managed our subscriber list, and delivered interesting emails to our customer base. I have also been very impressed with the support we've received. They an
The Grid & Pixel team put in real time understanding my brand before touching anything. Sheila and John have been responsive and thoughtful throughout, and the email flows they built are doing meaningful work in the background of my small DTC business. When changes happen in my business, they work with me to update my
No reviews yet.
Migration support varies by app and category. Grid & Pixel Email‑SMS‑Popups and Preorder, Back In Stock REZ 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 Grid & Pixel Email‑SMS‑Popups" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
