Stamped vs Reviews.io: 2026 Comparison for Shopify Stores

Stamped and Reviews.io target the same Shopify mid-market segment with comparable feature sets, similar pricing tiers, and overlapping positioning. Both are credible mid-market alternatives to Yotpo's enterprise pricing and Judge.me's basic display. The decision between them comes down to specifics: collection workflow, integration depth, display flexibility, and the long tail of operational considerations that surface 6 months after you commit.

This post breaks down the comparison on dimensions that matter for actual day-to-day operations, where each breaks down at scale, and which one is worth the slight effort of migration if you are currently on the wrong fit.

The Quick Comparison

| Dimension | Stamped | Reviews.io | |---|---|---| | Free tier | 50 emails/mo trial-style | 100 emails/mo trial-style | | Starter plan | $19/mo | $24/mo | | Mid-tier | $79/mo (Premium) | $89/mo (Standard) | | Enterprise | $499/mo | Custom | | Photo reviews | Free tier | Free tier | | Video reviews | Paid plans | Paid plans | | Q&A | Native | Native | | Loyalty + reviews | Yes (separate module) | Yes (integrated) | | Klaviyo integration | Yes | Yes | | Page speed footprint | Medium-Heavy | Medium | | Brand polish | Modern | Modern |

Both are competent mid-market apps. Most "Stamped vs Reviews.io" decisions are close calls.

Collection Workflow Differences

Stamped has a more flexible collection workflow with extensive customization on email/SMS templates, timing rules, and post-purchase automation. The trade-off is more setup time: Stamped's UI assumes you want to configure things, and the default settings often need adjustment.

Reviews.io has a cleaner default workflow that works well out of the box with less configuration. The collection emails feel more polished by default; the timing rules are simpler but adequate for most stores. Less customization, more "it just works."

For stores with marketing operations that want to A/B test review request copy, send via specific Klaviyo flows, and tightly control timing, Stamped's flexibility wins. For stores that want sensible defaults and minimal configuration, Reviews.io is faster to set up.

Integration Depth

Both apps integrate with the major Shopify ecosystem tools. Specifics:

• Klaviyo: Both integrate well. Reviews.io's data flowing into Klaviyo is slightly cleaner and easier to use in flows. Stamped's integration is more configurable but requires more setup.
• Google Shopping reviews feed: Both support Merchant Center submission for seller rating stars.
• Loyalty programs: Reviews.io's integrated loyalty (Loyalty Lion-like points-for-reviews) is built in and works without a second subscription. Stamped's loyalty is a separate subscription tier.
• Page builders: Both have native blocks in Shogun, Replo, and GemPages.
• Shopify Flow: Both have decent Shopify Flow triggers/actions for automation.

If loyalty + reviews integration matters to you and you want one app for both, Reviews.io has the edge. Otherwise integration depth is roughly even.

Display Quality

Both apps produce modern, polished review widgets. The aesthetics are similar: clean type, restrained spacing, modern color choices. Neither is genuinely best-in-class (Loox holds that crown for photo-first display), but both are noticeably better than Judge.me defaults and roughly tied with each other.

Display flexibility:

• Stamped has more layout options and deeper customization. You can create unusual review section configurations if your brand needs them.
• Reviews.io has fewer options but the defaults are stronger. You spend less time configuring; you also have less ability to customize.

For most stores, both are fine. Stores with strong existing brand systems benefit from Stamped's flexibility. Stores wanting fast time-to-launch benefit from Reviews.io's defaults.

Pricing Reality

Stamped starts at $19/mo (Basic) and scales to $499/mo (Enterprise). Most stores doing $50-200k/mo MRR land on the $79/mo Premium plan. Free tier is 50 emails/mo, which is too low for any active store.

Reviews.io starts at $24/mo (Lite) and scales to custom enterprise. Most $50-200k/mo stores are on the $89/mo Standard plan. Free tier is 100 emails/mo, also too low for active stores.

At similar feature levels, Reviews.io is $5-10/mo more expensive than Stamped. Whether that gap is worth it depends on whether Reviews.io's integrated loyalty or cleaner defaults justifies the premium for your store.

Page Speed Footprint

Lab measurements:

• Stamped widget payload: ~215KB compressed, ~260ms LCP impact, moderate CLS
• Reviews.io widget payload: ~198KB compressed, ~220ms LCP impact, moderate CLS

Reviews.io is slightly lighter. Both are middle-of-the-pack. Both should be lazy-loaded below the fold for stores fighting for Core Web Vitals greens.

Where Each Wins

Stamped wins for stores that:

• Need extensive customization of collection workflows
• Have marketing ops that want flow-level control
• Use a separate dedicated loyalty platform (Smile, LoyaltyLion)
• Want lower starting price

Reviews.io wins for stores that:

• Want integrated reviews + loyalty in one app
• Prefer cleaner defaults over deep customization
• Have lighter operations and want fast setup
• Use Klaviyo as the primary marketing tool

Where Each Breaks Down at Scale

Stamped starts to feel limiting when the configuration depth that helped you in year one becomes operational overhead in year two. Stores with smaller marketing teams sometimes find Stamped's flexibility more burden than benefit at $300k+/mo MRR. Migration to Yotpo or staying on Stamped Premium are the two paths.

Reviews.io starts to feel limiting when you outgrow the integrated-everything model. Stores at $300k+/mo with sophisticated marketing stacks often want dedicated specialist apps for each function rather than one consolidated platform. Migration paths are similar.

Where Eevy AI Fits

Both Stamped and Reviews.io are collection and display tools. Neither continuously optimizes the display layer based on your traffic. Once you configure the widget, the layout is static. Improving it requires manual A/B tests of new configurations.

Eevy AI is the optimization layer. The genetic algorithm continuously evolves how reviews display on your product pages (layout, ordering, photo prominence, content density) against your real traffic. Stores running Stamped or Reviews.io for collection plus Eevy AI for display optimization typically see 10-20% CVR lift on product pages within 90 days.

For mid-market stores that have already made the Stamped vs Reviews.io call and are looking for the next CRO lever, the optimization layer is typically the highest-leverage add-on.

Who Should Use Which

Choose Stamped if:

• You want extensive customization and have ops to configure it
• Your loyalty platform is dedicated (Smile, LoyaltyLion) and separate
• You start with a tight budget and might stay on Basic plan longer
• You want SMS review requests on lower tiers

Choose Reviews.io if:

• You want integrated reviews + loyalty in one subscription
• You prefer clean defaults over flexibility
• Your operations are lean and you want fast time-to-value
• Klaviyo is the centerpiece of your marketing stack

Add Eevy AI on top of either: for continuous display-layer optimization that compounds with whichever collection app you settle on.

Frequently Asked Questions

Can I migrate from Stamped to Reviews.io or vice versa? Yes, both support CSV import/export. Migration takes 2-4 hours for most stores. Photo URLs may need to be rehosted depending on storage choices.

Which is better for SEO? Both support Product schema, aggregateRating, and individual Review objects. Schema quality is roughly equivalent. Both produce valid rich-snippet eligibility when configured correctly.

Does either offer AI-generated review summaries? Both have basic AI summary features on higher tiers. Reviews.io's is slightly more polished; Stamped's is more configurable. Neither is as advanced as dedicated AI summary tools.

Is loyalty really better integrated on Reviews.io? Yes, in the sense that points-for-reviews flows work natively without a second subscription. Stamped's loyalty module is a separate subscription tier; Reviews.io's loyalty is included in the Standard plan and above.

Should I run both apps simultaneously? No. Running two review apps creates duplicate widgets, conflicting JavaScript, and analytics confusion. Pick one and add a non-overlapping layer (optimization, personalization) if needed.