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| Metric | K: Pop Up Email+Popup Window | Smile: Loyalty Program Rewards |
|---|---|---|
| Rating | ★ 5.0 ★ | 4.9 ★ |
| Total reviews | 8 | ★ 4.3k |
| Free plan | Yes | Yes |
| Pricing | Free | Free plan available |
| Built for Shopify | — | ★ Yes |
| Pricing tiers | — | 4 tiers |
| Listed features | 5 | 5 |
| Featured placements | — | 3 |
| Languages | 3 supported | 9 supported |
| Listed since | Oct 2025 | Dec 2014 |
K: Pop Up Email+Popup Window and Smile: Loyalty Program Rewards are evenly matched on rating (5.0★ vs 4.9★) — the differentiator comes down to pricing fit, feature breadth, and which app's interaction pattern suits your team's workflow. Pricing entry tiers: K: Pop Up Email+Popup Window at Free, Smile: Loyalty Program Rewards 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 (apps, orders, integrations) varies. Smile: Loyalty Program Rewards has the larger user base (4,310 reviews vs 8), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. K: Pop Up Email+Popup Window'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: K: Pop Up Email+Popup Window audit • Smile: Loyalty Program Rewards audit
| Listed |
|---|
| Last updated | — | — |
|---|
| Keyword | K | Smile |
|---|---|---|
| tiers | Not ranked | #1 |
| and rewards | Not ranked | #1 |
| loyalty and | Not ranked | #1 |
| power tools | #11 | Not ranked |
| #229 | Not ranked |
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Both K: Pop Up Email+Popup Window and Smile: Loyalty Program Rewards offer paid plans only. K: Pop Up Email+Popup Window starts at Free; Smile: Loyalty Program Rewards starts at Free plan available. Compare the per-tier features in the Pricing section above before committing.
K: Pop Up Email+Popup Window (5.0★, 8 reviews) and Smile: Loyalty Program Rewards (4.9★, 4,310 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. K: Pop Up Email+Popup Window fits better if you prioritize rating consistency; Smile: Loyalty Program Rewards 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. Smile: Loyalty Program Rewards has more onboarding documentation maturity (4,310 reviews vs 8), 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.
K: Pop Up Email+Popup Window typically suits early-stage and growth-mode stores based on its review-base composition (8 reviews). Smile: Loyalty Program Rewards aligns more with early-stage and growth-mode stores (4,310 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. K: Pop Up Email+Popup Window and Smile: Loyalty Program Rewards 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 K: Pop Up Email+Popup Window" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
