Stamped.io vs Growave vs Loox for SaaS companies is a targeted comparison of three Shopify review apps that SaaS-focused vendors often test when adding review, NPS, or feedback workflows to a merchant-facing product. This article breaks down what each app actually does, where they trade convenience for capability, and which situations favor one over the others.

Why these three are commonly compared

All three surface customer feedback on Shopify stores and offer varying degrees of automation, visual social proof, and retention features. Stamped.io is often evaluated for its review plus NPS and lifecycle capabilities, Growave for combining reviews with loyalty and referrals, and Loox for visual, photo-first review displays. Decision criteria for SaaS companies include API access, white-labeling, response volumes and quotas, integration with product analytics and support tools, and pricing that scales with orders or invites.

Stamped.io

Features

Stamped.io positions itself as a combined Reviews, Loyalty, and Lifecycle platform that includes NPS and survey capabilities alongside traditional review collection. It supports photo and video reviews, Q&A widgets, automated review request flows, and integrations with common marketing tools on Shopify. (stamped.io)

Pricing approach

Stamped publishes productized pricing that is sold per product module, with single-product plans and multi-product bundles. Stamped’s pricing pages show product plan starting points and note month-to-month plans; they present named product prices on the pricing page and describe options to bundle Reviews, Loyalty, and Lifecycle. Describe pricing as starting at defined product-level tiers, and confirm exact rates on Stamped’s pricing page before committing. (stamped.io)

Ease of setup and use

Setup is oriented to Shopify merchants with ready-made templates and pre-built flows, which gets a SaaS team collecting feedback quickly. The platform also offers migration tools and onboarding support for larger customers, making it usable for teams that want an out-of-the-box flow plus an option to customize via API.

Integrations

Stamped advertises Shopify and Shopify Plus as primary platforms, and lists direct integrations with tools such as Klaviyo and Attentive among others. It also exposes APIs and migration/import tools for moving existing reviews into Stamped. For precise integration endpoints and available apps, consult Stamped’s integration directory. (stamped.io)

Pros

• Review collection plus lifecycle and loyalty in a single vendor, reducing the number of moving parts for post-purchase journeys. (stamped.io)
• Built-in survey and NPS capabilities, useful for product-led SaaS companies that want structured feedback from buyers and trial purchasers.
• Onboarding and migration support for higher tiers makes switching easier for larger merchants.

Cons

• Productized modules mean pricing can escalate quickly if you need multiple products; verify bundle versus single-product costs before committing. (website.stamped.io)
• If the priority is purely lightweight visual reviews for a checkout flow, Stamped’s broader feature set may feel heavier than necessary.

Best for

SaaS companies that want an integrated retention stack tied to Shopify storefront behavior, and who value post-purchase surveys and NPS alongside reviews.

Growave

Features

Growave is an all-in-one Shopify marketing app that combines product reviews, loyalty and referral programs, wishlists, and social proof widgets into one product. The reviews module is part of a larger retention toolkit intended to replace multiple single-purpose apps. (growave.io)

Pricing approach

Growave’s pricing is tiered, with entry, growth, and plus tiers and explicit monthly order inclusions and overage rates shown on the vendor’s pricing page. Entry-level plans include a base number of monthly orders and charge per-block overage fees for additional orders; larger plans raise the included order quota and reduce per-block costs. Present pricing as tiered with included order quotas and per-100-order overage charges rather than an unlimited flat fee. (growave.io)

Ease of setup and use

Because Growave combines several tools under one UI, setup can be straightforward for teams who want to activate multiple features quickly. The admin UI places loyalty, referrals, reviews, and wishlists in one place, which shortens onboarding when compared with stitching separate apps together. The trade-off is that single-feature depth is sometimes less granular than specialized apps.

Integrations

Growave lists native integrations for common marketing tools and supports Shopify POS in higher tiers. It advertises integration points for email tools and social platforms; check the vendor’s integrations list for the exact connectors relevant to your stack. (growave.io)

Pros

• Consolidates several retention and social-proof features into one bill, lowering app sprawl and potential theme conflicts.
• Predictable tiering with included order volumes makes it easy to budget for stores with stable order counts. (growave.io)
• Useful for teams that need loyalty and referral alongside reviews in a single interface.

Cons

• Reviews are not the sole focus, so advanced review workflows or deep AI-driven review moderation may be less sophisticated than specialist tools.
• If your SaaS uses Shopify only as a checkout front for a product-heavy business model with very high invite volumes, overage costs should be modeled against projected order volume. (growave.io)

Best for

SaaS companies that want a single vendor to handle reviews plus loyalty/referral programs and prefer simpler billing tied to order volume.

Loox

Features

Loox emphasizes photo and video reviews and the display of visual social proof on product pages and collection pages. The core selling point is visual-first review widgets and automated request emails that include incentives and user-generated content capture. Loox also offers quotaed plans and an enterprise usage option that removes send quotas. (help.loox.io)

Pricing approach

Loox uses tiered plans with included monthly quotas for review request emails and a usage plan option for high-volume merchants that removes the quota. Present pricing as quota-based for standard plans with an enterprise usage option to avoid per-email caps. Consult Loox’s billing and plan pages for exact included limits and pricing. (support.loox.io)

Ease of setup and use

Loox is known for a fast install focused on capturing photo reviews from purchases, with pre-built email templates and a lightweight UI. For teams that prioritize visual content and want quick widget placement on Shopify themes, Loox is efficient and low-friction.

Integrations

Loox integrates with Shopify and exposes the usual review-to-Google and display options; enterprise or paid plans provide advanced features like unlimited sends. For the full integration list and details about Google Shopping or other feeds, check Loox’s help center. (help.loox.io)

Pros

• Visual-first review presentation helps conversion when product visuals matter.
• Simple setup and strong conversion-focused display widgets.
• Clear plan design for merchants who want straightforward quotas and an enterprise option to remove caps. (support.loox.io)

Cons

• Loox focuses on photo/video social proof rather than survey or NPS capabilities; it is not a feedback or loyalty platform.
• For SaaS companies that need structured NPS, in-product surveys, or deep CRM integrations, Loox is not sufficient on its own.

Best for

SaaS companies that sell physical add-ons, merch, or tangible components where customer photos drive conversion; less suitable as a standalone feedback platform for SaaS product usage data.

Three-Way Comparison

Stamped.io vs Growave vs Loox for SaaS companies

Pricing notes and verification

• Stamped.io presents productized module pricing on its pricing pages; check the vendor site for exact plan names and bundle discounts before purchase. (stamped.io)
• Growave lists included monthly orders and explicit overage fees per additional 100 orders on its pricing page; use the listed quotas to model growth-related costs. (growave.io)
• Loox uses quota-based plans with an enterprise usage plan that removes quotas; if you send many review request emails per month, consider the enterprise option. (support.loox.io)

Stamped.io alternatives?

Stamped.io alternatives range from dedicated review specialists to broader retention platforms. If your priority is pure visual social proof, Loox or Judge.me may be more cost effective. If loyalty and referrals are primary, Growave or dedicated loyalty platforms can match features at different price points. For additional side-by-side comparisons that include Stamped.io, see the Judge.me comparison article linked here: Judge.me vs Loox vs Stamped.io Compared.

Growave alternatives?

Growave alternatives include ecosystems that split loyalty, referrals, and reviews into separate best-of-breed apps or other all-in-one vendors that emphasize loyalty-first flows. If you want deeper review workflows, dedicated review apps will usually have more nuanced moderation and display controls. For perspective on competing all-in-one versus specialized vendors, see this comparison of other multi-tool options: Okendo vs Birdeye vs Bazaarvoice: Which Shopify review app Wins?.

Loox alternatives?

Loox alternatives are other photo-first review apps and lightweight review tools. If visual UGC is the priority, compare Loox to apps that focus on photo and video capture and display; if NPS or structured survey data is required, consider combining a review app with a survey tool.

Situational Recommendations

• You run a SaaS that sells physical add-ons, branded merch, or hardware: prioritize Loox when photo and video social proof directly drives conversion. Loox is tuned for visual content capture and display and fits merchants who rely on user photos in product pages. (help.loox.io)

• You operate a service-oriented SaaS offering with a small catalog or subscriptions, and you need structured customer feedback and NPS: prioritize Stamped.io for its survey, lifecycle and review combination. The reviews plus NPS and automated lifecycle flows let you gather both product sentiment and post-purchase behavior in one vendor. (stamped.io)

• You want to consolidate several marketing functions behind one subscription and reduce app collisions: choose Growave if loyalty, referrals, wishlists and reviews all matter and you want a single interface and bill. Use Growave’s included order quotas to model costs versus using separate specialized apps. (growave.io)

• You are volume sensitive and send many review requests: check quota rules carefully. If your expected number of review request emails or order-driven invites is high, Loox’s enterprise usage plan or Stamped’s enterprise/multi-domain offerings will be relevant. Model overage scenarios for Growave as well. (support.loox.io)

• You need deep API access and white-labeling for embedding review flows into a custom onboarding flow: favor Stamped.io’s product and API options and verify the exact API capabilities and rate limits on Stamped’s developer documentation. (website.stamped.io)

Choose based on the function that matters most. If you need NPS and lifecycle tied to reviews, Stamped.io is the most relevant. If you want loyalty and referrals alongside reviews in one bill, Growave simplifies operations. If photo and video reviews are the primary conversion lever, Loox focuses on that type of proof.

Worth a Look: Zigpoll

Zigpoll is a Shopify-native survey app that provides on-site, post-purchase, and exit-intent surveys with zero-party data capture and a clean setup built for Shopify. If you are evaluating Shopify review apps, Zigpoll is also worth a look for collecting structured feedback and short surveys alongside any review app you choose.

Related Reading

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