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1. Listing metadata
Field-level data| Kolz.ai | Postscript SMS Marketing | |
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| Screenshots | images | images |
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| Last updated | — | — |
| Kolz.ai | Postscript SMS Marketing | |
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| Tagline | ||
| Description | ||
| Screenshots | images | images |
| Languages | ||
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| Developer | ||
| Listed | ||
| Last updated | — | — |
Create and execute SMS programs to drive incremental revenue by engaging customers via text message
| Metric | Kolz.ai | Postscript SMS Marketing |
|---|---|---|
| Rating | ★ 5.0 ★ | 4.7 ★ |
| Total reviews | 1 | ★ 1.1k |
| Free plan | Yes | Yes |
| Pricing | Free plan available | Free to install |
| Built for Shopify | — | — |
| Pricing tiers | ★ 4 tiers | 3 tiers |
| Listed features | 5 | 5 |
| Featured placements | — | 1 |
| Languages | 1 supported | 1 supported |
| Listed since | Oct 2025 | Sep 2018 |
Kolz.ai edges out Postscript SMS Marketing 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: Kolz.ai at Free plan available, Postscript SMS Marketing 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. Postscript SMS Marketing has the larger user base (1,122 reviews vs 1), which usually maps to broader integration coverage, faster bug-fix cadence, and a deeper bench of community workflow patterns. Kolz.ai's smaller cohort can be an advantage for niche workflows where the bigger app has accumulated bloat. Recommended by store size: small/early-stage merchants who need fast install and low risk should default to Kolz.ai; mid-market and enterprise merchants with specific feature requirements should evaluate both — Postscript SMS Marketing's 1,122-review base may include the workflow context that matches your specific use case better than Kolz.ai'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: Kolz.ai audit • Postscript SMS Marketing audit
| Keyword | Kolz.ai | Postscript SMS Marketing |
|---|---|---|
| sms marketing | Not ranked | #8 |
| email marketing | Not ranked | #18 |
| marketing | Not ranked | #21 |
Not featured in any section recently.
Both Kolz.ai and Postscript SMS Marketing offer paid plans only. Kolz.ai starts at Free plan available; Postscript SMS Marketing starts at Free to install. Compare the per-tier features in the Pricing section above before committing.
Kolz.ai has the higher average rating (5.0★ from 1 reviews) compared to Postscript SMS Marketing (4.7★ from 1,122 reviews). Both are tracked daily by AppRanks, so the figures here update each refresh cycle.
It depends on what you're optimizing for. Kolz.ai fits better if you prioritize rating consistency; Postscript SMS Marketing 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. Postscript SMS Marketing has more onboarding documentation maturity (1,122 reviews vs 1), 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.
Kolz.ai typically suits early-stage and growth-mode stores based on its review-base composition (1 reviews). Postscript SMS Marketing aligns more with early-stage and growth-mode stores (1,122 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. Kolz.ai and Postscript SMS Marketing 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 Kolz.ai" in each app's help center. AppRanks does not track migration tooling directly — this is a category-specific capability worth verifying before commitment.
