| Nitro | Stackly | |
|---|---|---|
| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
| Platforms | ||
| Developer | ||
| Listed | ||
| Last updated | — | — |
| Metric | Nitro: Upsell & Cross‑Sell | Stackly: Quantity Breaks |
|---|---|---|
| Rating | 5.0 ★ | — |
| Total reviews | 261 | 0 |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free plan available |
| Built for Shopify | — | — |
| Pricing tiers | 2 tiers | ★ 3 tiers |
| Listed features | ★ 5 | 3 |
| Languages | 1 supported | 1 supported |
| Listed since | Nov 2023 | Sep 2026 |
Based on the data on this page, Nitro: Upsell & Cross‑Sell is the stronger choice for most Shopify App Store merchants — 5.0★ vs Stackly: Quantity Breaks's 0.0★ is a meaningful gap that usually reflects real product or support quality differences across the user base.
Pricing entry tiers: Nitro: Upsell & Cross‑Sell at Free plan available, Stackly: Quantity Breaks 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.
Nitro: Upsell & Cross‑Sell has the larger user base (261 reviews vs 0), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Stackly: Quantity Breaks'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 Nitro: Upsell & Cross‑Sell; mid-market and enterprise merchants with specific feature requirements should evaluate both — Stackly: Quantity Breaks's 0-review base may include the workflow context that matches your specific use case better than Nitro: Upsell & Cross‑Sell'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: Nitro: Upsell & Cross‑Sell audit • Stackly: Quantity Breaks audit
| Keyword | Nitro | Stackly |
|---|---|---|
| yotpo | #91 | Not ranked |
| quiz builder | #116 | Not ranked |
| ai | #141 | Not ranked |
No tracked changes.
Both Nitro: Upsell & Cross‑Sell and Stackly: Quantity Breaks offer paid plans only. Nitro: Upsell & Cross‑Sell starts at Free plan available; Stackly: Quantity Breaks starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.
AppRanks cannot separate these two on rating, because neither publishes one. Nitro: Upsell & Cross‑Sell does carry the larger published review base (261 vs 0). Read both apps' detail pages for the feature breakdown and recent listing changes.
Both apps are one-click installs from the Shopify App Store. Nitro: Upsell & Cross‑Sell has the deeper published review base (261 vs 0), 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.
Nitro: Upsell & Cross‑Sell typically suits early-stage and growth-mode teams based on its published review base (261 reviews). Stackly: Quantity Breaks typically suits early-stage and growth-mode teams based on its published review base (0 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. Nitro: Upsell & Cross‑Sell and Stackly: Quantity Breaks 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 Stackly: Quantity Breaks" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.