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

Introduction

Choosing the right wishlist app is a small decision that can have outsized effects on conversion rates, average order value, and customer retention. Shopify merchants face a crowded app store where each solution promises to boost saves, reduce cart abandonment, or increase social sharing — but not all apps are equal in usability, integrations, or long-term value.

Short answer: K Wish List‑Advanced Wishlist is a well-rated, focused wishlist tool that is strong for stores that need a lightweight, easy-to-install option for product saves and social sharing. Sirius Wish appears positioned as a capable wishlist solution with session- and action-based pricing tiers, but it lacks public review history, making risk assessment harder. For merchants who want to avoid piecing together multiple single-purpose apps, an integrated retention platform often delivers better value — consider a unified option to consolidate loyalty, reviews, referrals, and wishlist into a single stack.

This article provides an in-depth, feature-by-feature comparison of K Wish List‑Advanced Wishlist (developer: Kaktus) and Sirius Wish (developer: Sirius Boost LTD.). The goal is to help merchants understand strengths, weaknesses, and ideal use cases for each app, and to explain when a broader, integrated retention platform could be the better business decision.

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

How to Read This Comparison

This comparison prioritizes outcomes merchants care about: increasing product saves, reducing cart abandonment, improving repeat purchase rates, and minimizing technical overhead. The analysis is impartial, data-driven, and practical — highlighting when a single-purpose wishlist app is enough and when an integrated approach is a smarter investment.

What merchants should expect from any wishlist app

• Smooth add/remove experience on product and collection pages
• Persistent customer lists that survive sessions or account changes
• Clean design that matches the storefront without slowing page load
• Easy social sharing or gifting flows to drive referral visits
• Data and reporting to inform merchandising and marketing

With those baseline expectations in mind, the next sections evaluate each app across concrete criteria.

Feature Comparison

Core Wishlist Capabilities

K Wish List‑Advanced Wishlist

K Wish List focuses strictly on wishlist interactions that matter to shoppers: a floating button, header icon, and dedicated wishlist page or popup. The app supports adding items to a wishlist from product pages, and customers can create and share lists for gifting or saving items for later. The feature list includes social sharing, add-to-wishlist notifications, and options for popup or embedded wishlist displays.

Strengths:

• Interaction design is shopper-facing and familiar (floating button, header icon).
• Social sharing is built-in, which helps during gift seasons or product launches.
• Multiple display options (popup, embedded, dedicated page) suit different UX strategies.

Constraints:

• Function set is intentionally narrow. Merchants that want rewards or referral hooks around saved items must integrate separate tools.
• Deeper automation (e.g., email workflows triggered by wishlist abandonment) is not listed as native.

Sirius Wish

Sirius Wish positions itself as a wishlist manager that helps customers curate favorites and reduces cart abandonment. Core capabilities include creating and managing lists, saving for later, and the analytics to understand preference patterns. Sirius surfaces session and wishlist action limits per plan, suggesting a usage meter model.

Strengths:

• Clear usage tiers (sessions and wishlist actions) allow matching plan to traffic expectations.
• Focus on reducing cart abandonment and providing preference insights.

Constraints:

• Public detail on display options (floating button, header icons, popup types) is limited in the store description.
• No public reviews or rating to validate user experience or support responsiveness.
• The session/action pricing model creates an additional monitoring requirement: merchants must watch usage or risk upgrading unexpectedly.

User Experience and Design Flexibility

K Wish List‑Advanced Wishlist

Design customization is highlighted: icons, labels, colors can be adjusted to match the brand. Multiple wishlist presentation styles (floating icon, header icon, popup, embedded page) provide flexibility for both mobile-first and desktop layouts.

Practical implications:

• Merchants can tailor appearance without developer work, which accelerates launch.
• Floating buttons are useful for mobile UX; header icons work well for desktop navigation.
• The presence of add-to-wishlist notifications helps reassure shoppers their action was recorded, improving engagement.

Sirius Wish

The public description emphasizes intuitive features for creating and managing lists, but specific customization options are not listed. This suggests Sirius may focus on functionality over deep styling control, which could be adequate for brands using default themes but limiting for stores with complex design requirements.

Practical implications:

• Merchants that require pixel-perfect wishlist integration should verify available customization before committing.
• Sellers with custom storefronts should test on a staging environment to confirm visual integration.

Sharing, Social, and Gifting

K Wish List‑Advanced Wishlist

Social sharing is an explicit feature. The app supports sharing wishlists to social platforms and creating gift lists, which can be a powerful driver of referral traffic during holidays or events. Sharing workflows enable friends or family to view a wishlist and convert directly.

Merchants can expect:

• Increased referral visits around promotional windows.
• Easier gifting experiences for shoppers, helpful for seasonal campaigns.

Sirius Wish

Sirius claims the ability to share lists and reduce cart abandonment, but the description lacks specifics on which platforms are supported or how sharing links are generated. Merchants should review share link formats and mobile behavior before relying on social sharing for campaigns.

Analytics and Reporting

K Wish List‑Advanced Wishlist

K Wish List advertises tracking wishlist usage to gain insights into customer interest. Typical expected data would include top-saved products, wishlist-to-purchase conversion rates, and user-level wishlist activity.

How merchants can use this:

• Identify products with high save-to-purchase latency and design targeted remarketing campaigns.
• Prioritize inventory replenishment for frequently saved but out-of-stock items.
• Use wishlist data to inform promotions (e.g., discounts for items with high save counts).

Sirius Wish

Sirius mentions providing valuable insights into customer preferences. Given the session/action pricing model, Sirius likely tracks user-level actions and aggregate trends. However, the absence of public documentation on export options, dashboards, or integrations means merchants must confirm how easily insights can be fed into marketing platforms.

Persistence and Account Handling

Wishlist persistence across sessions and devices is a key UX requirement. Neither app's public description dives deeply into technical architecture (cookie-based vs. customer account linked). Merchants should verify:

• Does the wishlist persist for guest shoppers?
• Are wishlist items tied to customer accounts and migrated if an account is created later?
• What happens to wishlists when a customer logs in from another device?

K Wish List lists "Customers Wishlists" in its feature set, implying per-customer persistence. Sirius's details are vaguer; merchants should validate persistence behavior during trials.

Pricing & Value

Pricing is not only a cost decision; it influences when the app becomes a net-positive investment relative to conversion uplift, AOV lift, and retention improvements.

K Wish List‑Advanced Wishlist Pricing

K Wish List offers a free plan and two paid growth tiers:

• Free: Free to install. Includes floating button, header icon, add-to-wishlist button, add-to-wishlist notification, social sharing, popup & embedded wishlist types, customers' wishlists, and support.
• Growth: $6.70/month. Likely adds service reliability or removes limitations present in the free tier (public descriptions show feature parity with the free plan, so merchants should confirm limits).
• Growth 2: $19.99/month. Again, the listed features appear similar, so confirm differences in limits, branding removal, or support SLA.

Value considerations:

• The free tier is attractive for smaller stores testing wishlist mechanics.
• Low-cost paid tiers offer a clear path to scale without breaking the bank.
• Since feature listings appear similar across plans, merchants must verify limits (number of saved items, number of lists, support response time) before upgrading.

Sirius Wish Pricing

Sirius uses sessions and wishlist actions as the pricing metric:

• Free: 6000 Sessions, 100 Wishlist Actions
• Starter ($14.99/month): 12,000 Sessions, 1500 Wishlist Actions
• Pro ($49.99/month): 60,000 Sessions, 15,000 Wishlist Actions
• Premium ($89.99/month): 110,000 Sessions, 60,000 Wishlist Actions

Value considerations:

• Useful for stores with predictable session volumes that can map to product page traffic.
• The tiered limits require active monitoring of session usage; a sudden traffic spike (e.g., social post or influencer mention) could cause an upgrade or temporary throttling.
• For stores with fluctuating traffic or high seasonal spikes, the session-based model might lead to higher costs compared to flat-rate pricing.

Comparing Value for Money

• For small-to-medium merchants who want straightforward functionality and minimal billing surprises, K Wish List's free and low-cost plans offer clear, predictable pricing and likely better value for money.
• For merchants with sophisticated traffic modeling who need a usage-based approach, Sirius's session/action tiers can be tuned to expected loads, but require diligence to avoid overages or service caps.
• Neither single-purpose app includes loyalty, referrals, or review features, so merchants will likely add separate apps to achieve broader retention goals — increasing total cost of ownership.

Integrations and Extensions

K Wish List‑Advanced Wishlist Integrations

The app notes compatibility with Checkout (Shopify Checkout). That suggests smooth operation with Shopify’s native checkout flow, which is important for customer account linking and the final purchase path.

What to verify:

• Availability of webhooks or APIs for exporting wishlist events into email platforms like Klaviyo or Omnisend.
• Compatibility with page builders and custom themes.
• How the app plays with common conversion apps (e.g., popups, subscriptions, and loyalty apps).

Sirius Wish Integrations

Sirius does not list specific integrations in the public description. Merchants should request documentation on available webhooks, APIs, or built-in integrations to marketing and CRM tools.

Integration impact:

• Ease of feeding wishlist events into email automation determines how effectively merchants can trigger wishlist abandonment flows.
• Native integrations reduce the need for middleware or custom development.

Support, Documentation, and Trust Signals

K Wish List‑Advanced Wishlist

• Reviews: 81 reviews with a 4.7 rating on the Shopify App Store. This is a strong trust signal and indicates a history of merchant feedback.
• Support: The app advertises knowledgeable support. With a track record of reviews, merchants can assess responsiveness and issue resolution by scanning reviews.
• Documentation: No detailed documentation is included in the public description, but a generally positive review score suggests functional support channels.

Sirius Wish

• Reviews: 0 reviews and 0 rating in the app listing. New or unreviewed apps require more caution because there is no visible community validation of reliability or support quality.
• Support: No explicit support promises appear in the product description. Merchants should verify SLA, response times, and available channels before installing on a live store.

How to proceed:

• For Sirius, request a trial and evaluate support responsiveness before rolling out widely.
• For either app, confirm availability of pre-sales documentation and implementation guidance to reduce setup friction.

Performance, Speed, and Technical Overhead

Page performance matters: heavy JavaScript or unoptimized assets can increase page load times, hurting SEO and conversions.

K Wish List advertises a lightweight, no-code setup. That suggests the app is optimized for fast loading with common built-in display modes. Sirius’s performance profile is not publicly specified. Merchants should:

• Run Lighthouse or GTmetrix tests with the app active in a staging theme.
• Confirm how scripts are loaded (async/defer) and whether the app uses server-side rendering of wishlist state for faster first paint.
• Investigate fallback behavior if scripts fail (e.g., degraded UX without breaking add-to-cart).

Security & Data Ownership

Critical questions for both apps:

• Where are wishlist events stored?
• Can the merchant export wishlist data (CSV, API) for marketing activation?
• What privacy controls exist for customer lists, especially when sharing links?

K Wish List lists customer wishlists as a feature; merchants should confirm export capabilities and data retention policies. Sirius should also be asked for export and retention details before accepting the app into production.

Setup, Maintenance, and Long-Term Costs

• K Wish List's free tier makes experimentation low-friction. The upgrade path to $6.70/month or $19.99/month is predictable.
• Sirius's session/action model requires monitoring as traffic scales; unexpected upgrades can occur after a viral moment or paid campaign.
• Both apps are single-purpose. For merchants who need reviews, loyalty, or referral mechanics, expect to add additional apps — increasing monthly spend and technical maintenance.

Practical guidance:

• Start with the free tier where available to validate user behavior.
• Track wishlist-to-purchase conversion and incremental revenue lift; if the app pays for itself, it’s worth upgrading.
• Consider the long-term cost of maintaining multiple single-function apps when comparing against an integrated solution.

Use Cases and Recommendations

When K Wish List‑Advanced Wishlist Makes Sense

• The store wants a quick, minimal-risk wishlist solution with social sharing and flexible display options.
• The team has limited dev resources and needs a no-code install that matches the theme.
• Costs matter and predictable, low monthly fees are preferred over usage-based bills.
• The store wants to test wishlist mechanics before investing in deeper retention programs.

When Sirius Wish Makes Sense

• The store anticipates a large number of sessions and prefers to match app spend to traffic with session-based tiers.
• The merchant needs a wishlist tool that can be scaled across traffic bands and is comfortable monitoring usage metrics.
• The team will validate Sirius’s support responsiveness via a trial and is comfortable shipping without public review history.

When Neither Single-Purpose App Is Enough

• The brand wants to run loyalty campaigns that tie to wishlist behavior (e.g., reward points for saving items).
• The marketing strategy relies on review-driven social proof plus wishlist-triggered campaigns.
• The objective is to reduce tool sprawl, lower integration costs, and centralize retention metrics.

If any of the above apply, an all-in-one retention platform is worth investigating.

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

App fatigue is the slow creep of complexity and cost that occurs when a store accumulates multiple single-purpose tools — each with its own billing, support channel, and integration points. Over time, the overhead of maintaining and connecting discrete apps often outweighs their individual functional benefits.

Common symptoms of app fatigue:

• Multiple admin panels to configure similar triggers (e.g., a wishlist app, a separate loyalty app, and a reviews app).
• Fragmented customer data scattered across services, requiring manual exports or custom middleware.
• Increased page weight from several front-end widgets, harming performance metrics.
• Higher total monthly cost when combined single-purpose fees surpass the price of a consolidated platform.

Growave addresses these pain points with a "More Growth, Less Stack" proposition. Rather than adding another discrete wishlist app, Growave bundles wishlist functionality with loyalty and rewards, referrals, reviews and UGC, and VIP tiers — enabling one source of retention truth.

What "More Growth, Less Stack" Means Practically

• Consolidated billing and a unified admin for loyalty, reviews, referrals, and wishlist reduces operational overhead.
• Cross-tool automation: wishlist behavior can feed loyalty or email triggers without bridging multiple vendors.
• Reduced front-end footprint by using a single, well-optimized widget set.
• Centralized reporting on customer lifetime value, repeat purchase rates, and program ROI.

Merchants can evaluate consolidated value by comparing the sum of single-app costs to the price of a single platform that covers multiple retention levers.

Key Growave Capabilities (and How They Solve Wishlist + Retention Needs)

• Loyalty and Rewards: Drive repeat purchases with configurable reward programs. This transforms wishlist signals into actionable incentives — for example, offering points when an item moves from wishlist to purchase. Growave supports loyalty and rewards that drive repeat purchases, enabling merchants to turn saved interest into repeat revenue.
• Reviews & UGC: Collect and showcase product reviews and photos to convert wishlist traffic. Social proof often shortens the save-to-purchase journey. Growave helps merchants collect and showcase authentic reviews.
• Wishlist: A native wishlist that integrates with the broader retention suite so wishlist events can trigger loyalty or referral flows without extra middleware.
• Referrals and VIP Tiers: Encourage shoppers who engage with wishlists to refer friends or unlock VIP benefits, amplifying lifetime value.
• Integrations: Built to work with Shopify Plus and popular marketing stacks, reducing engineering lift for enterprise or high-traffic stores. Learn how Growave supports solutions for high-growth Plus brands.

These capabilities mean wishlist behavior is not siloed — it becomes a signal in a broader retention strategy.

Demonstrating Value and Getting Started

Merchants can explore pricing tiers and compare plans to their current toolstack to calculate potential savings and operational simplification. For a hands-on evaluation, one option is to Book a personalized demo to see how wishlist data can be routed into loyalty or review workflows. Book a personalized demo to evaluate integration fit and onboarding timelines. (Hard CTA)

Growave’s public presence in the Shopify ecosystem is visible through its app listing and pricing pages. Merchants can choose to install from the Shopify App Store to start a trial or review app store details. The product pricing page also helps merchants model expected monthly spend — helpful when comparing single-app fees versus all-in-one plans. Compare and model your expected costs before deciding: merchants often find that consolidating features reduces the total cost of ownership when loyalty and reviews are required alongside wishlist functionality. For quick reference, merchants can review the pricing and feature tiers to see which plan matches their monthly order volume and support needs at an integrated pricing page.

How Growave Reduces Technical Risk

• One integration point for front-end widgets reduces page weight and the risk of script conflicts.
• Unified customer IDs and data exports simplify segmentation and personalization.
• Built-in enterprise features (e.g., Checkout extensions, API & SDK, and dedicated onboarding in higher plans) support long-term scaling.
• For high-growth merchants, Growave offers bespoke support paths, visible through the Shopify Plus solutions page and customer stories.

Two Secondary Features Revisited (Twice, as requested)

• Growave’s loyalty and rewards that drive repeat purchases let merchants convert wishlist actions into points or exclusive offers — a direct path from saves to purchases.
• Growave also helps merchants collect and showcase authentic reviews, converting saved-item interest into trust signals that shorten decision cycles.

Both features reduce the number of apps required to run a modern retention program.

Pricing and Migration Considerations

• Growave offers an entry-level plan suited for smaller merchants and higher-tier plans for fast-growing stores. For a detailed plan comparison, merchants should view the pricing page to match business volume and feature needs: compare integrated pricing tiers.
• Migration from existing wishlist apps is typically straightforward because centralized platforms provide import tools or APIs to onboard legacy wishlist data. Ask support about migration timelines and data mapping.

Where Growave Might Not Be the Right Fit

• Very small stores that only need a simple, free wishlist widget and no other retention features may find single-purpose apps like K Wish List attractive due to lower immediate cost and minimal configuration.
• Stores with extreme customization that require custom wishlist UX not covered by Growave’s standard widgets should validate available customization in advance.

Implementation Checklist: How to Choose and Launch

Before installing any wishlist solution, merchants should follow a repeatable checklist:

• Define goals: measure desired KPI lift (wishlist saves per visitor, wishlist-to-purchase conversion, AOV increase).
• Map required integrations: email provider, CRM, analytics, and loyalty.
• Audit theme compatibility: test in a staging environment for visual and performance impact.
• Plan lifecycle flows: wishlist add → email/reminder → discount → purchase.
• Budget total cost of ownership: include single-app fees, expected add-on apps, or an all-in-one subscription.
• Verify support and SLAs: response time, migration assistance, and available documentation.
• Run an A/B test where feasible: compare baseline with wishlist active and measure incremental lift.

This checklist helps merchants choose an approach that aligns with outcomes rather than shiny features alone.

Conclusion

For merchants choosing between K Wish List‑Advanced Wishlist and Sirius Wish, the decision comes down to predictability versus usage-based scaling and public trust. K Wish List (Kaktus) is an excellent choice for stores that want a tried-and-tested, easy-to-install wishlist with social sharing and predictable low-cost plans — it carries the confidence of 81 reviews at a 4.7 rating. Sirius Wish is positioned for stores that prefer session/action-based pricing and want to match plan costs to traffic volumes, but it lacks public reviews and transparent integration details, which increases risk.

Beyond this point-by-point comparison, many merchants will benefit more from a unified retention platform that consolidates wishlist, loyalty, referrals, and reviews — reducing complexity and improving long-term ROI. Growave offers that consolidated approach and can replace multiple single-purpose tools with a single stack that centralizes customer data and retention workflows. Compare expected costs and operational overhead against an integrated plan at an integrated pricing page and review the app listing to confirm compatibility via the Shopify App Store listing.

If the goal is to reduce tool sprawl and unlock cross-functional retention strategies without juggling multiple vendors, start a focused evaluation using Growave’s plan comparison and consider beginning with a trial to measure consolidated impact. Start a 14-day free trial to see whether consolidating wishlist, loyalty, reviews, and referrals into one platform reduces costs and accelerates repeat purchase rates. (Hard CTA)

FAQ

Q: Which app is better for a store with limited technical resources?
A: K Wish List‑Advanced Wishlist is built for quick, no-code installs and offers predictable low-cost plans, making it a pragmatic choice for stores with limited dev capacity. If the store needs only wishlist features and social sharing, it is a solid, low-friction option.

Q: How does Sirius Wish’s pricing model affect scaling?
A: Sirius charges by sessions and wishlist actions. This can be beneficial for merchants who can forecast traffic precisely, but it requires monitoring to prevent mid-month plan upgrades after traffic spikes. For stores with volatile or seasonal traffic, usage-based billing can increase unpredictability.

Q: What are the trade-offs between specialized wishlist apps and an all-in-one platform?
A: Specialized apps are often lighter, cheaper initially, and faster to install. The trade-offs include fragmented data, multiple bills, potential script conflicts, and higher integration cost when adding loyalty, reviews, or referral programs. An all-in-one platform reduces this fragmentation, centralizes reporting, and typically improves the ability to convert wishlist signals into revenue-driving actions.

Q: How should a merchant evaluate whether to switch to an integrated platform?
A: Compare the total monthly cost of existing single-purpose apps to an integrated plan, estimate migration effort, and model expected lift from unified automation (e.g., wishlist → loyalty points → email reminders → purchase). For a hands-on evaluation, Book a personalized demo or review pricing and feature tiers to model ROI.