Stamped.io vs Trustmary vs Trustpilot for Shopify stores is a practical comparison for merchants choosing how to collect, display, and act on customer feedback. This article walks through setup, features, pricing approach, integrations, and real-world trade-offs so you can map each tool to specific Shopify store needs.

Why these three are commonly compared

Shopify merchants typically need reviews, on-site widgets, and a way to turn feedback into marketing assets. Stamped.io is positioned as an reviews and customer-experience toolkit that includes NPS and loyalty features, Trustmary focuses on turning survey and NPS responses into publishable testimonials, and Trustpilot is the open, consumer-facing review network that feeds external trust signals. Those differences produce overlap and friction points, which is why stores weigh them side by side.

Stamped.io

What it does

Stamped.io is a reviews, UGC, and customer-experience platform built around Shopify use cases: product reviews, NPS surveys, post-purchase review invitations, and loyalty/points features. It provides in-theme widgets, email collectors, and APIs that push reviews into product pages and marketing flows. Stamped documents an NPS modal, export hooks, and integrations with Shopify-centric tools. (connect.stamped.io)

Pricing approach

Stamped publishes tiered plans with a free option and paid tiers that scale by monthly review requests and features. Their public pages list a free tier plus incrementally higher plans with larger review-request quotas and professional features; there is also an enterprise tier with custom terms. Treat the published numbers as starting points and contact sales if you need large-scale sending or SSO. (stamped.io)

Practical note: Stamped’s Shopify App Store listing and help docs show the app is installable via Shopify with in-theme widget installation; that makes onboarding straightforward but also means you must keep app billing and Shopify app permissions in mind. (apps.shopify.com)

Setup and ease of use

• Expect a two-step setup: install the Shopify app, then place/enable widgets in your theme or use the provided embed script. Stamped has guided tutorials and theme snippets. (stampedsupport.stamped.io)
• If you want post-checkout or order-confirmation NPS popups, you need a plan that includes NPS widgets and may require adding theme code or a modal widget snippet. The NPS widget can be placed on the order confirmation page for best capture rates. (stampedsupport.stamped.io)

Gotchas: theme compatibility can be surprisingly annoying. If your theme customizes product templates heavily or offloads rendering to headless storefronts, widgets may need manual adjustments. Also monitor page script load because review apps add front-end requests; if you care about performance, audit widget load priorities and lazy-load where possible.

Integrations

Stamped documents direct Shopify integration plus connectors for common email and lifecycle tools (Klaviyo, Attentive, Shop app, others via documented integrations). If you rely on a headless storefront, Stamped’s APIs and embed options are workable, but expect some engineering to replicate theme-level behavior. (website.stamped.io)

Pros

• Rich feature set for product reviews, NPS, and loyalty in one vendor.
• Shopify-native onboarding and theme snippets make install quick for standard themes. (apps.shopify.com)

Cons

• Feature breadth brings complexity; some features are gated to higher tiers.
• Can add client-side weight; site-performance checks and selective widget loading are recommended.
• For unique theme setups you may need custom snippets or support tickets.

Best for

Shopify stores that want an all-in-one reviews + NPS + loyalty solution that keeps data and workflows in one place, and who can tolerate or manage the added front-end footprint.

Trustmary

What it does

Trustmary is oriented around feedback and testimonial capture, turning positive NPS and survey responses into publishable testimonials and on-site widgets. It promotes an external review page and tools to import reviews from other platforms then surface them as SEO-friendly social proof. Trustmary positions itself as a survey-first testimonial engine rather than a broad UGC suite. (trustmary.com)

Pricing approach

Trustmary offers a free tier with limited monthly survey responses and paid, buildable plans that scale by response volume and widget views. Their pricing page lists a free option and paid tiers with add-ons for features such as premium integrations and white labeling, so the effective cost can vary depending on which add-ons you need. Hedge your budgeting by modeling expected monthly response and widget-view volumes before committing. (trustmary.com)

Setup and ease of use

• Trustmary uses embeddable widgets, an external review page, and Zapier integration options for Shopify triggers. For Shopify you typically embed a small script or use Zapier to trigger review requests from new orders. Their Help Center documents Shopify embed and Zapier-based flows. (help.trustmary.com)
• The testimonial conversion workflow is straightforward: collect NPS or survey responses, auto-promote promoters to a publishable testimonial, then embed widgets or link to the Trustmary-hosted review page.

Gotchas: Trustmary counts widget "views" as a billing metric. If your site has high traffic but you only need a handful of survey responses, widget-view limits can push you into higher tiers even if responses are low. Also, automatic import connectors exist but may require add-ons for multiple sources.

Integrations

Trustmary supports embedding on Shopify, Zapier triggers for Shopify events, and imports from other review sources. It offers integrations geared at testimonial publication rather than deep lifecycle marketing automation. Use Zapier when you need conversions between Shopify order events and Trustmary campaigns. (help.trustmary.com)

Pros

• Lightweight, survey-first approach that converts promoters into polished testimonials quickly.
• Flexible import and external review page options, which help stores with limited dev resources get testimonials online fast. (trustmary.com)

Cons

• Pricing can be view- and response-based, meaning costs scale in ways that are not just "number of requests."
• Not as feature-dense for product-level review flows or loyalty programs compared to review-first vendors.

Best for

Stores that prioritize collecting NPS/survey feedback and turning promoters into testimonials for on-site and SEO use, especially where minimal engineering resources are available.

(Internal link: for a broader competition that includes Trustmary, see the comparison Trustmary vs Fera vs Growave: Which Shopify review app Wins?.)

Trustpilot

What it does

Trustpilot is an open consumer review platform where shoppers post reviews on the public Trustpilot site and businesses use widgets to display TrustScore and TrustBoxes on their store. It functions as an external signal that appears in search, ad creatives, and some AI discovery layers; businesses can collect verified reviews via Trustpilot’s invitation tools and show TrustBoxes on Shopify. Trustpilot emphasizes public visibility and broad consumer reach. (corporate.trustpilot.com)

Pricing approach

Trustpilot publishes business plans and invites merchants to contact sales for detailed pricing. Their public business pages show packaged features and example collector limits; the model is tiered and often negotiated for large accounts, so expect a sales conversation for exact rates and volume discounts. Plan selection frequently depends on the number of invitation-clicks or collectors you need. (business.trustpilot.com)

Setup and ease of use

• Trustpilot offers a Shopify app that connects your store to the Trustpilot platform, letting you automate invitations from orders and deploy TrustBox widgets. The Shopify App Store listing and Trustpilot’s docs outline the installation flow. (apps.shopify.com)
• Expect a slightly different workflow than in-app review platforms. Customers leave reviews on Trustpilot’s domain; you embed TrustBoxes that surface aggregated scores and selected reviews back on your store.

Gotchas: Trustpilot runs as an open community. That means negative reviews appear publicly and cannot be removed by a merchant simply because they are negative. Merchants can respond and escalate guideline breaches, but they cannot selectively delete genuine reviews. If your product or service mix invites controversial or mixed feedback, be prepared for public conversation management. (trustpilot.com)

Integrations

Trustpilot integrates with Shopify through a first-party app and offers various marketing and analytics connectors. Because it is an external network, display is handled via TrustBoxes and the merchant dashboard; you will rely less on theme-level widgets and more on embedding Trustpilot-supplied components or using their app for automatic invites. (business.trustpilot.com)

Pros

• External brand signal that consumers commonly search for and that can appear in AI and search results.
• Scales to a wide audience without hosting reviews on your domain exclusively; strong network effects. (trustpilot.com)

Cons

• Public negative reviews are visible and sometimes hard to manage without a formal dispute process.
• Pricing often involves sales discussions and can be less predictable for small merchants.

Best for

Brands that want broad external reach and third-party social proof, and that have the capacity to manage public review responses and reputation.

(Internal link: to see Trustpilot compared with other review networks, see Trustpilot vs Loox vs Trustmary Compared.)

Three-Way Comparison

Situational Recommendations

• You run a mid-market Shopify store with many SKUs, want product-level ratings, and also care about repeat purchases: choose Stamped.io for reviews plus loyalty and the ability to create lifecycle flows. Implementation tip: set up review-invitation cadence in staging, sample emails to avoid spamming, and add lazy-loading widgets on category pages to limit performance impact. (website.stamped.io)

• You have a service-oriented or boutique store and your biggest conversion lift comes from curated testimonials rather than large volumes of product reviews: choose Trustmary. Use their NPS flows to identify promoters, then publish testimonials on high-converting landing pages. Watch widget-view limits: if homepage traffic is heavy, budget views into your plan or lazy-load the widget to avoid hitting view caps. (trustmary.com)

• Your brand needs broad external validation for discovery outside the store, or you sell in marketplaces and want an independent score consumers can find: choose Trustpilot. Expect public reviews, plan for reputation management, and set up automated invites through the Shopify app. If you are not ready to field negative reviews publicly, use Trustpilot selectively or pair it with an on-site review strategy for product-level details. (apps.shopify.com)

• You want both on-site control and external reach: run a split strategy. Host product reviews and loyalty on Stamped.io, and concurrently maintain a Trustpilot presence for external signals. Use Trustmary or Stamped NPS to funnel happy customers to both your on-site testimonials and to Trustpilot invites, but avoid double-inviting customers in quick succession; stagger invites by channel and use order metadata to deduplicate. (connect.stamped.io)

Stamped.io alternatives?

Stamped.io alternatives include Judge.me, Loox, Yotpo, and others depending on whether you need photo reviews, low-cost options, or enterprise feature sets. For a head-to-head that includes Trustmary, see the Zigpoll comparison Judge.me vs Fera vs Bazaarvoice Compared. Choose on the axis of feature depth versus price and front-end impact.

Trustmary alternatives?

Trustmary alternatives are survey- and testimonial-oriented tools, and overlap exists with Junip and Fera for review-to-testimonial flows. For a comparison that crosses similar tools, see Junip vs Trustmary vs Trustpilot Compared to weigh testimonial workflow differences and SEO outcomes.

Trustpilot alternatives?

If you want an external review network like Trustpilot, alternatives include Google Business Profile reviews, Feefo, and product-specific review networks like Bazaarvoice for enterprises. Choose an external network when discovery outside your store matters more than on-site micro-copy and product-level UGC.

Final implementation checklist (practical)

• Audit theme and page speed before installing any review widget; benchmark mobile interaction metrics.
• Decide where reviews must live: on-site product pages, a hosted review page, or an external trust network, then map invites to avoid repeated customer solicitations.
• Test on staging, confirm widget CSS and mobile layout, and verify schema markup outputs to help search engines surface star ratings.
• Build a dedupe rule for invites: do not send a Trustpilot invite and a product-review invite within 48 hours of each other unless you are explicit about multi-channel requests.

Worth a Look: Zigpoll

If you are evaluating review and survey options for Shopify, Zigpoll is also worth a look. Zigpoll is a Shopify-native survey app that offers post-purchase, on-site, and exit-intent surveys with zero-party data collection and a clean setup that runs inside Shopify.

Related Reading

• Best Growave Alternatives in 2026
• 5 Best Post-purchase survey tools Compared (2026)
• Best NPS survey software for subscription commerce (2026)