Stamped.io vs Growave vs Loox for subscription commerce: this compares three Shopify review tools through the lens of subscription-first stores. Short version, subscription merchants need reliable review collection tied to recurring orders, post-purchase survey capability, churn-reducing lifecycle touches, and integrations with billing and retention systems. Each app approaches those needs differently; pick by which gaps you must fill, not by review count or marketing copy.
Stamped.io
Stamped.io positions itself as a full ecommerce reviews and NPS platform with built-in survey features. Its product set is focused on Reviews plus Lifecycle and Loyalty modules that can work together if you want a retention stack from one vendor. The vendor’s pricing page describes bundled product subscriptions and starts with single-product plans around a mid-market monthly price, with multi-product bundles at higher tiers. (stamped.io)
Features and functionality
Stamped collects text, photo, and video reviews, supports NPS and post-purchase surveys, and exposes lifecycle automation for post-purchase messaging and replenishment flows. Those lifecycle and loyalty products are sold as separate products that can be combined, which matters if you want a tight subscription recovery workflow that links reviews to churn signals. (stamped.io)
Pricing approach
Pricing is productized: Reviews, Loyalty, and Lifecycle are each a subscription line, with bundled options available and a self-serve route via the Shopify App Store for smaller brands. The Stamped pricing page indicates plans start at a monthly figure for single products and higher for bundles; Stamped also advertises unlimited orders on several paid plans. Hedge your expectations and check the pricing page for your exact order volumes and domains. (stamped.io)
Ease of setup and use
Onboarding is clearly productized: self-serve install paths exist for smaller shops and dedicated onboarding is available on higher tiers. Templates and pre-configured journeys reduce work, but expect some setup time if you want custom survey flows tied to subscription lifecycle events.
Integrations
Stamped promotes native Shopify support and lists integrations with common retention and service tools such as Klaviyo and Attentive, plus helpdesk integrations. That makes it practical to sync review triggers with subscription emails or churn campaigns. If you rely on specific billing or subscription platforms, validate direct connectors or webhook capabilities before committing. (stamped.io)
Support and documentation
Stamped has a Help Center and advertises 7-day support availability, with dedicated onboarding on larger plans. There is a migration/import tool advertised for switching review sources. (stamped.io)
Pros and cons
Pros: Built-for-Shopify reviews plus lifecycle and NPS, designed to connect feedback into retention programs. Cons: Pricing is productized so stacking multiple capabilities can push costs quickly for subscription-heavy stores; full value requires using multiple Stamped products.
Best for
Subscription brands that want an integrated reviews-plus-lifecycle vendor, and that plan to use reviews as a signal inside churn prevention or replenishment journeys.
Growave
Growave is an all-in-one Shopify marketing app that bundles reviews with loyalty, referrals, wishlists, and UGC tools. The vendor frames itself as a consolidation play: one app instead of multiple point solutions. Its public pricing lists entry and growth plans, each including a predefined number of monthly orders and additional usage charges if you exceed that threshold. (growave.io)
Features and functionality
Growave includes product reviews with photo UGC, loyalty and referral programs, wishlists, and some onsite nudges. For subscription merchants the appeal is the loyalty and referral modules working in the same system that collects reviews, which can simplify reward triggers after recurring payments.
Pricing approach
Growave uses tiered plans that include a specific allotment of monthly orders; exceeding those allotments triggers per-100-order overage charges on each plan. There is a free trial and a free tier for very small shops, plus higher tiers for more orders and features. Use the pricing page to model how recurring orders will scale your bill. (growave.io)
Ease of setup and use
Because Growave is a bundled app, initial setup puts many features in front of you; that reduces the number of separate installs, but the UI can feel crowded if you only need reviews. Loyalty and referral programs require some policy and reward design work, which pay off if you run subscriber incentives.
Integrations
Growave supports Shopify and advertises common integrations such as Klaviyo; plus it exposes checkout and POS loyalty hooks on the higher plans. For subscription commerce you should confirm support for your subscription billing app or whether webhooks will be needed. (growave.io)
Support and documentation
Growave offers documentation and billing/support FAQ pages; their site promotes 24/7 email and live chat support on most paid tiers. The vendor also advertises migration assistance and contract buyout support if you are switching from another loyalty app. (growave.io)
Pros and cons
Pros: Consolidates loyalty, referrals, and reviews into one app, lowering app sprawl and cross-app friction. Cons: If you only need reviews, you pay for a larger bundle; usage-based order limits mean subscription-heavy stores must model overage costs.
Best for
Subscription brands that want an integrated retention and reviews tool in one place, especially if loyalty and referral mechanics are central to subscriber uplift.
Loox
Loox is focused on photo and video review collection with an emphasis on visual social proof for product pages and marketing channels. Its product positioning is lighter on loyalty and lifecycle, and stronger on converting new traffic with visual reviews. The vendor publishes tiered plans with order-based limits and usage charges once limits are exceeded. (loox.app)
Features and functionality
Loox specializes in visual reviews and referral programs that tie UGC to conversion. Features typically include photo and video review collection, automated review request emails, and widgets to display social proof across product pages and marketing channels. Loox also exposes referral mechanics as an add-on on certain plans. (loox.app)
Pricing approach
Loox runs tiered plans where each plan includes a fixed number of monthly orders and applies overage charges when you exceed that limit. The vendor documents beginner and scale plan structures and describes an enterprise usage approach for very high-volume stores. If subscription billing creates steady order counts, budget for the plan that covers your recurring order volume or expect overage charges. (help.loox.io)
Ease of setup and use
Loox is designed to be lightweight: install, configure review request cadence, and enable widgets. For subscription merchants the setup is straightforward for review capture; integrating review requests into subscription lifecycle events may require custom triggers if your subscription platform does not expose the event natively.
Integrations
Loox requires Shopify for installation and integrates with marketing channels; its documentation shows connectors for review display and export to channels like email and paid ads. Confirm direct connectors with your subscription billing provider if you need automated review requests on rebill events. (loox.app)
Support and documentation
Loox maintains a Help Center with plan and billing articles and explains usage rules and overage behavior. Support channels vary by plan; check the plan pages for exact SLA claims. (help.loox.io)
Pros and cons
Pros: Excellent for visual social proof that improves acquisition conversion, relatively simple to run. Cons: Not engineered as a retention platform; it has weaker native churn recovery or subscription lifecycle tooling compared with dedicated lifecycle vendors.
Best for
Subscription brands that rely on acquisition by social proof and who need strong visual reviews for product-led conversion, but that have separate retention tooling in place.
Three-Way Comparison
Below is a quick reference table comparing the three apps on the most relevant axes for subscription commerce.
Stamped.io vs Growave vs Loox for subscription commerce: quick reference
| Criteria | Stamped.io | Growave | Loox |
|---|---|---|---|
| Core focus | Reviews plus lifecycle and loyalty products, review collection plus surveys. (stamped.io) | All-in-one marketing: reviews, loyalty, referrals, wishlist, UGC. (growave.io) | Photo and video reviews with referral/UGC emphasis. (loox.app) |
| Pricing model | Productized subscriptions (Reviews, Loyalty, Lifecycle) with bundle options; starts at single-product monthly tiers, higher for multi-product bundles. (stamped.io) | Tiered plans with included monthly order allowances and per-100-order overage pricing; free trial/free tier available. (growave.io) | Tiered plans with monthly order limits and overage charges; beginner to scale plans and enterprise usage options. (help.loox.io) |
| Photo/video reviews | Yes, supported across plans. (stamped.io) | Yes, supports photo UGC as part of reviews. (growave.io) | Core strength: photo and video first. (loox.app) |
| Loyalty / referrals | Available as separate product. (stamped.io) | Native loyalty and referral modules included. (growave.io) | Referral add-on on some plans, not a full loyalty platform. (help.loox.io) |
| Integration with retention tools | Advertised connectors to Klaviyo, Attentive, Gorgias and others. (stamped.io) | Integrates with Klaviyo and other marketing tools; POS and checkout extensions on higher tiers. (growave.io) | Shopify-native, exports for marketing channels; check for direct subscription-billing connectors. (loox.app) |
| Ease of setup | Moderate: templates available, can be complex if wiring multiple products together. (stamped.io) | Moderate to high: many features to configure but reduces multi-app installs. (growave.io) | Low friction for review capture and widgets; custom lifecycle triggers may need dev. (loox.app) |
| Support | Help Center, weekend support claims, dedicated onboarding on larger plans. (stamped.io) | 24/7 email and live chat on paid tiers, migration support. (growave.io) | Help Center with plan-specific support; enterprise support varies by plan. (help.loox.io) |
| Best fit for subscription commerce | Brands that want reviews tied into lifecycle and NPS signals. (stamped.io) | Brands wanting a single app for loyalty, referrals and reviews to drive retention. (growave.io) | Brands that prioritize acquisition via visual reviews and already have retention tooling. (loox.app) |
Situational Recommendations
If you need reviews integrated into churn-minimizing flows: choose Stamped.io. It is designed so reviews, NPS, and lifecycle automation live under the same vendor roof, which reduces the work of mapping feedback to retention campaigns; expect to pay for multiple Stamped products if you want the full stack. (stamped.io)
Worth a Look: Zigpoll
If you're evaluating options for Shopify review apps, Zigpoll is also worth a look. Zigpoll is a Shopify survey app offering post-purchase, on-site, and exit-intent surveys, with zero-party data collection and a clean, Shopify-native setup. It tends to suit merchants who want flexible survey types in one place without enterprise pricing.
