K Wish List‑Advanced Wishlist vs. Sirius Wish: An In-Depth Comparison

Introduction

Choosing the right wishlist app is deceptively important for Shopify merchants. A wishlist can be a lightweight conversion lever—helping reduce cart abandonment, surface demand signals, and make repeat purchases easier—but the wrong tool adds maintenance, UX friction, and extra monthly fees. Merchants often must decide between focused, single-purpose apps and broader retention platforms that bundle wishlist functionality with loyalty, referrals, and reviews.

Short answer: K Wish List‑Advanced Wishlist is a polished, low-friction choice for merchants who want a simple, customizable wishlist that installs quickly and keeps costs minimal. Sirius Wish is pitched as a wishlist tool with session-based limits and tiered action caps, but the current listing shows no user reviews, which leaves questions about real-world adoption and support. For merchants who want more than a standalone wishlist—programs that increase retention and lifetime value—an integrated platform like Growave often delivers better value for money by reducing app sprawl and consolidating retention features.

This article provides a structured, feature-by-feature comparison of K Wish List‑Advanced Wishlist and Sirius Wish to help merchants pick the right tool for their goals. After the comparison, the discussion will explain the limits of single-purpose apps and introduce a consolidated alternative that addresses app fatigue.

K Wish List‑Advanced Wishlist vs. Sirius Wish: At a Glance

How to Read This Comparison

The goal is to evaluate both apps objectively across real merchant concerns:

• Features and user experience
• Pricing and value for money
• Integrations and technical fit
• Analytics, reporting, and data ownership
• Support, stability, and adoption signals
• Deployment and maintenance overhead

Each section highlights how a merchant should weigh trade-offs based on store size, traffic, technical resources, and retention objectives.

Deep Dive Comparison

Product Positioning and Developer Background

K Wish List‑Advanced Wishlist (Kaktus)

K Wish List is clearly positioned as a lightweight wishlist meant for fast setup and basic customization. With a clean feature list—floating button, header icon, add-to-wishlist button, sharing, and popup/embedded types—it targets merchants who want a quick uplift in product saves without engineering effort. The app has 81 reviews and a 4.7 rating, which signals real merchant usage and a generally positive experience.

Strengths of this positioning:

• Quick install with no coding required.
• Visible, friendly UI options (floating button, header icon, popup).
• Social sharing and customer wishlists make it useful for gifting and seasonal campaigns.

Limitations:

• Single-purpose scope; merchants that want loyalty, referrals, or review collection will need separate tools.
• Integrations and enterprise capabilities are not emphasized.

Sirius Wish (Sirius Boost LTD.)

Sirius Wish is presented as a wishlist tool that emphasizes engagement and reduced cart abandonment. The pricing model is notable because it ties plan tiers to session counts and wishlist actions, which suggests a focus on usage control for stores with varying traffic patterns.

Signals to consider:

• The app currently shows zero reviews and a zero rating, which is a red flag for merchant adoption or public feedback.
• The tiered sessions/actions approach might be attractive for stores that want predictable scalability, but lack of reviews means support and reliability claims are unverified.

Features Compared

Core Wishlist Functionality

K Wish List:

• Add-to-wishlist button on product pages.
• Floating wishlist button and header icon for persistent access.
• Display types: popup, embedded wishlist page.
• Social sharing of wishlists (social networks, shareable links).
• Customer wishlists (accounts can store lists).
• Add-to-wishlist notifications.

Sirius Wish:

• Create and manage wishlists (add, remove, manage items).
• Focus on reducing cart abandonment by letting customers save items for later.
• UX integration with Shopify storefront.
• Emphasis on tracking wishlist actions as part of session/action quotas.

Practical difference:

• K Wish List offers multiple UI placements (floating button, header icon, embedded page) out of the box and explicit social sharing features that suit gift shopping and seasonal promotions.
• Sirius Wish appears to cover the basic wishlist lifecycle but puts more emphasis on action/session governance. If the store expects bursts of activity or prefers paying by usage, Sirius Wish’s model could be attractive—provided the merchant is comfortable with the app’s service stability and support.

Customization & Theming

K Wish List:

• Customizable icons, labels, colors to align with brand styling.
• Simple, non-technical setup, which enables merchants to match brand aesthetics quickly.

Sirius Wish:

• Claimed to integrate smoothly with the store for a cohesive experience, but specific theming and customization controls are not detailed in the publicly available description.

Practical difference:

• K Wish List explicitly lists customization options, making it safer for merchants who want visual coherence without a developer.
• Sirius Wish may support theming but lacks clear documentation in the listing; merchants should test the app in their store theme before committing.

Sharing & Social Features

K Wish List:

• Social media sharing of wishlists.
• Shareable links for gift registries or events.

Sirius Wish:

• Allows customers to save and revisit favorites but does not emphasize social sharing in the feature blurb.

Practical difference:

• For stores relying on gift purchases, social-driven traffic, or holiday lists, K Wish List has a clearer value proposition.

Analytics & Insights

K Wish List:

• Mentions tracking wishlist usage to gain insights into customer interest. The depth of analytics is not spelled out in the app listing.

Sirius Wish:

• Mentions providing insights into customer preferences, enabling targeted marketing. The specific reporting tools and dashboards are not described.

Practical difference:

• Neither app offers detailed analytics information in the listing. Merchants should verify what raw data is accessible, whether events are emitted for third-party analytics, and how easy it is to export usage logs.

Multi-Device & Checkout Behavior

K Wish List:

• Works with checkout (listing says "Works With: Checkout"), and supports customer wishlists, which implies cross-session persistence and checkout visibility.

Sirius Wish:

• The "Works With" field is blank on the listing. Merchants should confirm behavior at checkout and how wishlisted items map to orders or abandoned carts.

Practical difference:

• K Wish List’s explicit checkout compatibility is reassuring for stores that want cross-session persistence and to potentially use wishlist data in the checkout flow.

Pricing & Value

Pricing is a central decision point for merchants balancing feature needs and budget. Pricing should be interpreted as "value for money" rather than simply cheaper or more expensive.

K Wish List Pricing Overview

• Free plan: Free to install; includes float button, header icon, add-to-wishlist button, notifications, social sharing, popup and embedded types, customer wishlists, and support.
• Growth plan: $6.70 / month — includes the same core features (listing suggests the same items as free).
• Growth 2: $19.99 / month — again listed with the same core features.

Practical interpretation:

• K Wish List offers a functional free tier adequate for small stores. Paid tiers are inexpensive and appear aimed at stores that prefer a low monthly commitment for likely additional support or stability.
• The app’s pricing structure is friendly for merchants seeking immediate wishlist functionality with minimal overhead.

Sirius Wish Pricing Overview

• Free: Free — 6000 sessions, 100 wishlist actions.
• Starter: $14.99 / month — 12,000 sessions, 1,500 wishlist actions.
• Pro: $49.99 / month — 60,000 sessions, 15,000 wishlist actions.
• Premium: $89.99 / month — 110,000 sessions, 60,000 wishlist actions.

Practical interpretation:

• Sirius Wish uses a usage-based model. For higher-traffic stores, the cost climbs more steeply than K Wish List. The session/action model can control cost for small or experimental stores but may become expensive as user engagement grows.
• Merchants should forecast wishlist action volume before choosing Sirius Wish to avoid surprise overages or the need to upgrade.

Value Considerations

When assessing value for money, account for:

• The cost of running additional apps (increased maintenance, multiple subscriptions).
• The potential revenue lift from wishlist features—product saves, reduced friction to purchase, and gift list conversions.
• Future needs: If loyalty programs, referral incentives, or review collection are on the roadmap, a wishlist-only app may require purchasing additional tools.

K Wish List offers a clear low-cost path for wishlist functionality; Sirius Wish offers a usage-controlled model that could be cost-effective for low-usage stores but may become less attractive as engagement grows.

Integrations & Extensibility

K Wish List

• Works With: Checkout listed explicitly.
• App description mentions compatibility with store UI elements and suggests no-code setup.
• No explicit list of third-party integrations in the listing.

Practical tip:

• Confirm whether K Wish List exposes events for Shopify Flow, Klaviyo, or other email tools. For segmentation and remarketing, event exports matter.

Sirius Wish

• Works With: Not listed.
• No public list of integrations on the app listing.

Practical tip:

• Merchants should ask Sirius Wish whether it emits Shopify events, supports Shopify Flow, or integrates with analytics and email platforms. Lack of clear integration details increases the burden on merchants to test or ask support.

Support, Documentation & Adoption Signals

K Wish List

• 81 reviews with a 4.7 rating — a positive adoption signal.
• Description includes "Knowledgeable Support," and the pricing tiers reference support.
• A merchant can reasonably expect community feedback and a history of use.

Sirius Wish

• 0 reviews and 0 rating — raises questions about adoption, reliability, or recent listing status.
• Merchants should be cautious: lack of public reviews limits ability to benchmark support response speed and problem resolution.

Practical guidance:

• If fast support and proven track record are priorities, the presence of merchant reviews and a high rating for K Wish List is meaningful.
• Sirius Wish may still be a capable product, but merchants should request trial access, support SLAs, and uptime commitments before integrating it into a revenue-critical flow.

Implementation & UX

Install & Setup

K Wish List:

• Marketed as quick setup with no coding required.
• Customizable icons and labels make it straightforward to match brand visuals.

Sirius Wish:

• Promises effortless integration; however, implementation specifics are not detailed.

Practical steps before install:

• Backup theme and test the app on a duplicate theme.
• Check mobile responsiveness of wishlist components.
• Map wishlist actions to analytics events to measure ROI.

Front-End UX

K Wish List:

• Multiple UI placements (floating button, header icon) offer flexible UX choices. Floating buttons are effective at prompting saves without interrupting browsing.

Sirius Wish:

• Focuses on creating and managing wishlists; merchants should verify UI placements and whether the wishlist interrupts conversion paths.

Merchant caution:

• Widgets that clash with theme elements or slow page loads can reduce conversion. Test performance metrics before committing.

Data, Analytics & Ownership

Data access is crucial for long-term strategy—understanding which products customers save informs merchandising, stocking, and marketing.

K Wish List:

• Mentions tracking usage; clarify whether data can be exported or integrated with analytics platforms.

Sirius Wish:

• Claims to provide insights; confirm the granularity of reports and event export capability.

Best practice:

• Ensure the chosen wishlist app emits Shopify events or webhooks for "wishlist_add" and "wishlist_remove" to integrate with email flows, abandoned wishlist automations, and analytics.

Privacy, Compliance & Security

Both apps must operate within Shopify's ecosystem and comply with data privacy rules. Merchants should confirm:

• Where user wishlist data is stored.
• Whether the app shares any PII externally.
• How to delete customer data on request.

Given the lack of public detail for Sirius Wish, merchants should explicitly request privacy documentation.

Performance & Scalability

K Wish List:

• Being lightweight and targeted, the app is less likely to introduce significant complexity. Its pricing tiers suggest support for growing stores without large step-ups.

Sirius Wish:

• Session-based tiers hint at scaling control, but session-based quotas can become limiting on high-traffic days or during promotions.

Merchant recommendation:

• Forecast expected wishlist interactions (e.g., peak traffic during a sale, holiday spikes) and choose a plan that tolerates those peaks without throttling.

Maintenance, Upgrades & Exit Plan

A well-managed wishlist strategy includes an exit path:

• Confirm how wishlists and customer data are exported if the app is uninstalled.
• Verify whether wishlists stored in customer accounts remain intact after removal.

K Wish List:

• With "Customers Wishlists" on the free plan, merchants should verify export options.

Sirius Wish:

• Confirm data portability given session and action caps.

Use Cases: Which App Fits Which Store?

To make a decision, match app characteristics to merchant needs.

K Wish List is better for:

• Small-to-midsize stores that want quick wishlist deployment without developer time.
• Brands that rely on gifting, holiday shopping, or social sharing to drive sales.
• Merchants who value user feedback and a proven app with 81 reviews and a 4.7 rating.
• Teams seeking a low monthly cost and a functional free tier.

Sirius Wish is better for:

• Stores that prefer usage-based pricing and need predictable session/action caps.
• Merchants experimenting with wishlist features who want to control costs by traffic.
• Operators who will test the app thoroughly in their store and confirm support expectations.

Neither app is ideal if:

• The business wants a unified retention strategy combining loyalty, referrals, reviews, and wishlist functionality without installing multiple single-purpose tools.
• The merchant needs enterprise-level integrations, multi-language support, or dedicated account management.

Migration & Future-Proofing

If the store outgrows a single-purpose wishlist app, migration costs matter. Questions to ask before installing:

• How easily can wishlist data be exported?
• Does the app provide an API or CSV export for wishlist lists and customer mappings?
• Will wishlists survive theme changes or app removal?

K Wish List’s stronger adoption suggests merchants may find community resources for migration. Sirius Wish requires explicit confirmation on data portability before committing.

Pricing Scenarios and ROI Estimates

Below are example scenarios to illustrate value for money. These are general estimations and not financial advice:

• Low-traffic store with seasonal gift focus: K Wish List free plan may suffice. Social sharing can generate gift purchases; no additional subscription cost means near-zero marginal spend.
• Growing boutique with predictable wishlist engagement: K Wish List Growth ($6.70) or Growth 2 ($19.99) keeps costs low while maintaining simple wishlist features.
• Mid-traffic store that expects high seasonal traffic: Sirius Wish Starter or Pro may be cost-effective if wishlist actions remain under plan limits. But once action volume grows, Sirius Wish pricing can escalate faster than K Wish List.
• Stores planning multi-channel retention (loyalty + wishlist + reviews): Multiple single-purpose apps add up monthly. Consolidating into an integrated platform can reduce monthly overhead while adding cross-functional capabilities.

Support Checklist Before Installing Either App

Merchants should ask the following during trial:

• Can wishlist data be exported as CSV or via API?
• Are wishlist events emitted to Shopify for use in automations or analytics?
• What are the support hours and expected response time?
• Are there known theme conflicts (especially for custom or heavily modified themes)?
• How do they handle GDPR/CCPA deletion requests?

The Alternative: Solving App Fatigue with an All-in-One Platform

Single-purpose apps solve narrow problems quickly, but they also create long-term operational friction. Merchants frequently experience "app fatigue"—the cumulative cost, maintenance, and integration headaches of running many specialized tools. App fatigue creates invisible costs:

• Multiple subscriptions that add to monthly burn.
• Fragmented data: loyalty, wishlist, reviews, and referral data live in different silos.
• Increased complexity in automations: mapping events across many apps for flows in Klaviyo, Omnisend, or custom scripts.
• Greater theme and performance risk from multiple widgets and scripts.

An integrated retention platform reduces that burden by consolidating capabilities and centralizing data.

Growave’s "More Growth, Less Stack" proposition speaks to this exact challenge. Instead of stitching together separate wishlist, loyalty, referral, and review apps, merchants can consolidate retention features into a single platform to reduce overhead and improve outcomes.

• For merchants who want to consolidate retention features, reviewing Growave’s pricing tiers helps evaluate how much complexity and cost can be saved over time. Explore the option to consolidate retention features and see which tier aligns with monthly order volumes and support needs.
• Growave bundles wishlist with loyalty, referrals, reviews, and VIP tiers, which removes redundancy and reduces the risk of data fragmentation. Merchants can learn how to build loyalty and rewards that drive repeat purchases as part of a unified program.
• Pulling reviews, UGC, and social proof into the same platform helps merchants collect and showcase authentic reviews without wiring separate apps together.

How Consolidation Changes Outcomes

Consolidating retention tools into one platform produces tangible business outcomes:

• Retain customers: Loyalty programs and VIP tiers create repeat purchase behavior; wishlists feed into personalized reward prompts.
• Increase LTV: Points, tiers, and referral incentives compound, producing measurable increases in customer lifetime value.
• Reduce operational load: One dashboard, one installation, and consolidated data exports simplify daily operations and reporting.
• Better ROI tracking: With centralized events and a single analytics view, measuring the impact of promotions and loyalty initiatives becomes simpler and more accurate.

Merchants looking for proof points can review customer stories from brands scaling retention to see consolidated approaches in practice.

Integrations and Enterprise Readiness

An integrated platform must meet merchant technical needs. Growave supports:

• Enterprise Shopify stores, including solutions for high-growth Plus brands.
• Integrations with common marketing and support tools to enable cohesive automations (Klaviyo, Omnisend, Gorgias, Recharge, and more).
• Checkout extensions and headless options on advanced plans to support enterprise flows.

Testing the Alternative

Before migrating, merchants should test:

• How wishlist data maps into loyalty point triggers or follow-up automations.
• Whether reviews collection and wishlist events are visible in the same dashboard.
• How much admin time is saved when running campaigns across loyalty, referrals, and reviews.

Merchants can book a personalized demo to evaluate how an integrated retention stack will fit existing marketing workflows and how quickly the platform can be operationalized. Book a personalized demo to evaluate Growave in the context of current retention goals.

Cost Comparison Snapshot

A rough cost comparison often shows that bundling multiple functions into one platform yields better value for money as a store grows:

• Multiple single-purpose apps (wishlist + loyalty + reviews + referrals) often add up to more than a consolidated platform.
• Consolidation reduces duplicated functionality (e.g., duplicate reporting, multiple customer databases).

Compare expected monthly spend and the projected incremental revenue from loyalty and referrals to determine if consolidation is beneficial. Merchants can consolidate retention features and compare plans to identify the best economic fit.

Practical Migration Steps From a Wishlist App to an Integrated Platform

For merchants ready to move from a wishlist-only solution to an integrated retention platform, a sensible migration flow minimizes disruption:

• Export current wishlist data (CSV/API) and verify mapping of customer IDs and product SKUs.
• Pause scripts and widgets from legacy apps before adding a new platform to prevent UI conflicts.
• Test core automations in a staging theme (signup flows, wishlist-to-email triggers, rewards accrual).
• Gradually sunset the single-purpose app once data and tests are validated.
• Communicate changes to customers if necessary (e.g., explain new rewards or wishlist visibility improvements).

If a merchant wants hands-on guidance, Growth-focused platforms often provide onboarding assistance and dedicated success managers on higher tiers. Investigate plan-level services at the pricing stage by reviewing how plans map to onboarding and account management.

Final Decision Framework

When choosing between K Wish List‑Advanced Wishlist and Sirius Wish, evaluate against these priorities:

• Immediate Wishlist Need, Low Budget: K Wish List free tier offers immediate capability and strong user feedback.
• Usage-Based Cost Control: Sirius Wish’s session/action model may provide predictable spend for low usage patterns but requires accurate forecasting.
• UX & Theming Without Dev Time: K Wish List’s explicit customization options and fast setup reduce reliance on developers.
• Support & Proven Track Record: K Wish List’s review footprint is reassuring; Sirius Wish needs direct validation through trial and support conversation.
• If the long-term objective includes loyalty, reviews, and referrals, consider consolidating into one platform to reduce integration overhead and improve retention outcomes.

Conclusion

For merchants choosing between K Wish List‑Advanced Wishlist and Sirius Wish, the decision comes down to scope and confidence. K Wish List is an effective, low-cost solution for stores that need a reliable, customizable wishlist with social sharing and visible adoption (81 reviews, 4.7 rating). Sirius Wish presents a usage-tier pricing model that could suit stores seeking session-based cost control, but the lack of public reviews (0 reviews, 0 rating) increases risk and warrants careful testing.

Beyond the two apps, merchants should consider whether a single-purpose wishlist will remain sufficient as retention needs grow. An integrated platform reduces tool sprawl and centralizes customer data across loyalty, wishlist, referrals, and reviews—improving retention, increasing lifetime value, and simplifying operations. Merchants can review options to consolidate retention features and compare plans that bundle wishlist with loyalty and review capabilities.

If a merchant is ready to evaluate a consolidated approach, start a 14-day free trial to see how a unified retention stack reduces overhead and drives sustainable growth. Start a 14-day free trial

FAQ

Q: Which app offers better value for money for a small store just testing wishlists? A: K Wish List provides immediate, no-cost entry with visible user adoption and flexible UI placements, making it a strong value proposition for small stores. Sirius Wish’s free tier may work for very light usage, but its tiered session/action model requires forecasting to avoid upgrade surprises.

Q: How important are user reviews when choosing between these apps? A: User reviews are a practical signal of adoption, support quality, and real-world reliability. K Wish List’s 81 reviews and 4.7 rating provide confidence; Sirius Wish’s lack of public reviews means merchants should validate support response times and real-world behavior during a trial.

Q: Can wishlist data be used to trigger loyalty or email automations? A: Yes—if the wishlist app emits events (webhooks or Shopify events) or allows export. For cross-functional automations, a unified platform that includes wishlist, loyalty, and reviews reduces wiring effort and enables richer customer journeys, such as rewarding wishlist actions with points or targeted reminder emails that leverage loyalty status.

Q: How does an all-in-one platform compare to specialized apps? A: An all-in-one platform consolidates data, reduces monthly subscriptions, and simplifies automations. It removes duplicated functionality and centralizes reporting, which helps merchants measure ROI more accurately and scale retention programs faster. Merchants can evaluate plan fit and onboarding options to determine if consolidation yields better long-term value. For those interested in a demo of an integrated retention stack, merchants can book a personalized demo.