Alertr: Inventory Management vs Sellfy

Daily Inventory Sync & Sell Rate Calculation

Alertr automatically connects to your Shopify store to pull product and order data every single day. It doesn't just show you current stock levels; it actively calculates the sell-through rate for each product variant (SKU). This means you always have an up-to-date, data-driven understanding of what's selling fast and what's sitting still, providing the foundational intelligence for all proactive reordering decisions without any manual data entry.

Smart Reorder Alerts via Email & Slack

Set your desired stock thresholds and let Alertr do the watching. The app monitors your inventory levels and triggers an instant alert the moment stock for an item drops below your set point. Each alert is intelligent, telling you exactly how many units to reorder based on the item's calculated sell rate and your configured supplier lead time, ensuring you order the right amount at the right time.

Centralized Inventory Dashboard

Gain instant visibility over your entire product catalog from one clean, mobile-friendly dashboard. View all your SKUs sorted by critical metrics like "Days of Stock Remaining," "Sell Rate," and recommended "Reorder Quantity." Use intuitive filters to immediately see items that are "Low Stock," "Need Reorder," or are "Out of Stock," making weekly inventory reviews quick and actionable.

Configurable Workflow & Data Export

Tailor Alertr to fit your unique business operations. Configure key assumptions like the sales lookback period for sell rate calculations, supplier lead times, and how often you receive alerts. For reporting or creating purchase orders, easily export your complete, calculated inventory data to CSV with one click, seamlessly bridging digital management with your external processes.

Intuitive Online Store Builder

Sellfy's drag-and-drop store builder makes it incredibly easy to create and customize your online store. Users can choose from free templates and modify them to suit their brand, allowing for a unique and professional appearance without any coding knowledge required.

Seamless Product Sales

Whether you're selling digital products like eBooks and videos or physical goods through print-on-demand, Sellfy allows you to manage everything from a single intuitive dashboard. You can upload files up to 20GB, making it perfect for a wide range of digital content.

Automated Marketing Tools

Sellfy takes the hassle out of marketing with tools designed to automate your outreach efforts. Users can implement affiliate marketing, create targeted email campaigns, optimize for SEO, and utilize product upselling features—all aimed at maximizing sales and customer engagement.

High-Converting Checkout Experience

The platform offers a streamlined checkout process optimized for mobile conversions. With support for various payment options, including PayPal, Stripe, Apple Pay, and Google Pay, Sellfy ensures that customers can complete their purchases quickly and effortlessly.

Replacing Manual Spreadsheet Tracking

Merchants tired of error-prone, time-consuming spreadsheet updates can use Alertr to fully automate inventory tracking. The app eliminates manual data entry and complex formulas by syncing live Shopify data, calculating sell rates automatically, and providing a single source of truth, saving several hours per week and reducing human error that leads to stockouts.

Proactive Prevention of Stockouts

For growing brands where a single stockout means lost revenue and customer trust, Alertr acts as a safety net. By providing early warnings based on actual sales velocity, it gives merchants ample time to place orders with suppliers before a product runs out, ensuring sales continue uninterrupted and capital isn't tied up in excess, slow-moving inventory.

Finding a Stocky Alternative

With Shopify shutting down its native Stocky app in 2026, merchants relying on it for core inventory management need a new solution. Alertr is built as a direct, user-friendly alternative, handling the same essential workflow of sell rate tracking and reorder alerts without the complexity or high cost of other enterprise-grade apps on the market.

Streamlining Team Communication

Stores where multiple team members or departments need inventory visibility can integrate Alertr with Slack. This sends reorder alerts directly into a designated team channel, ensuring everyone from the owner to the fulfillment manager is instantly informed, streamlining communication and accelerating the purchase order process.

Digital Product Sales

Creators can use Sellfy to effortlessly sell digital products such as eBooks, music, and videos. The platform's simplicity allows users to upload their content and start selling within minutes, providing an effective way to monetize their creative work.

Subscription Services

Sellfy is perfect for businesses that want to offer subscription plans for their products. Whether it's a monthly magazine, workout routines, or exclusive content, users can set up automated payments to create a steady income stream.

Print-on-Demand Merchandise

For those looking to sell physical products without upfront costs, Sellfy's print-on-demand feature is a game-changer. Users can design and sell custom merchandise like T-shirts, mugs, and posters, with production and delivery handled by fulfillment centers.

Affiliate Marketing and Collaboration

Sellfy empowers users to expand their reach through affiliate marketing. By allowing others to promote their products, creators can tap into new audiences and increase sales without heavy marketing investments.

Alertr: Inventory Management is the simplest, most proactive inventory app built specifically for Shopify merchants. It solves the critical problem of reactive stock management, where manual checks and stale spreadsheets lead to missed sales from unexpected stockouts. Designed with a mobile-first, user-centric approach, Alertr automates the entire monitoring process. It connects to your store, syncs your inventory data daily, and uses smart algorithms to calculate sell rates for every SKU. Its core value is in its predictive alerts: instead of you checking stock, Alertr tells you precisely when and how much to reorder before you run out, via email or directly in your team's Slack. Born from a real workflow that saves a DTC jewelry brand 3 hours weekly, it replaces complex, expensive apps with a straightforward, affordable tool. It’s the perfect solution for growing brands that need reliable, hands-off inventory intelligence without the high cost or steep learning curve of traditional enterprise software.

Sellfy is a cutting-edge mobile-first platform tailored for creators, entrepreneurs, and small businesses looking to convert their passion into a successful online venture. With its user-friendly, code-free online store builder, Sellfy enables users to effortlessly launch a fully branded digital storefront in mere minutes. The platform stands out for its simplicity and powerful functionality, allowing users to sell a variety of products, including digital goods like eBooks, music, and videos, as well as physical merchandise through integrated print-on-demand services and subscription plans. Sellfy's unique value proposition lies in its transparent fee structure—no transaction fees—along with built-in marketing and SEO tools designed to drive traffic and boost sales. With 24/7 customer support, Sellfy is the ideal solution for anyone aiming to monetize their audience, establish their brand, and create passive income without the need for technical expertise or marketing know-how.

How does Alertr differ from Shopify's built-in inventory tools?

Shopify's native tools show you current stock levels but are fundamentally reactive. They don't track how fast items sell or predict when you'll run out. Alertr is proactive; it syncs daily, calculates sell rates, and sends alerts before you hit zero, acting as an intelligent assistant that tells you what to do, not just what is.

What happens during the 14-day free trial?

The free trial gives you full, unrestricted access to all Pro plan features, including unlimited SKU tracking, email and Slack alerts, CSV export, and the full dashboard. You can connect your store, configure settings, and receive live alerts to experience the complete value of Alertr before any payment is required.

Can I customize the alerts and calculations?

Yes, Alertr is designed for flexibility. You can configure your own reorder point thresholds, set the sales "lookback" period (e.g., 30, 60, 90 days) used to calculate sell rates, input your specific supplier lead times, and choose your alert frequency to match your review schedule perfectly.

Is there a long-term contract or setup fee?

No. Alertr operates on a simple, transparent monthly subscription with no hidden fees or long-term contracts. You can cancel your Pro plan at any time. The setup is designed to be a 1-click process, connecting directly to your Shopify store with no complex onboarding or additional charges.

How quickly can I set up my Sellfy store?

You can set up your Sellfy store in just a few minutes. With the intuitive drag-and-drop builder and free templates, you can have your online store ready to go in no time.

Are there any transaction fees?

No, Sellfy does not charge transaction fees on sales made through its platform. This transparent pricing structure allows you to keep more of your earnings.

Can I sell both digital and physical products?

Absolutely! Sellfy enables you to sell a wide range of products, including digital goods like eBooks and music, as well as physical items using their print-on-demand service.

What kind of support does Sellfy offer?

Sellfy provides 24/7 customer support to assist users with any questions or challenges they may face. Additionally, there are video tutorials and guides available to help you make the most of the platform.

Alertr: Inventory Management is a Shopify app designed to automate inventory tracking and reorder alerts. It falls into the category of inventory management and stock control tools, helping store owners prevent stockouts and lost sales by proactively monitoring product levels. Shopify merchants often explore alternatives for various reasons. Some may need more advanced features like purchase order management or multi-location sync, while others might be on a tighter budget or using a platform outside of Shopify. It's common to seek a tool that better aligns with specific business scale, workflow complexity, or integration requirements. When evaluating other options, consider your core needs. Look for reliable low-stock alerts, accurate sell-through rate calculations, and ease of use. Also, assess the pricing model, the quality of customer support, and how well the tool integrates with your existing tech stack, like your shipping or accounting software.

Sellfy is a mobile-first, code-free store builder designed specifically for creators to easily sell digital products, merchandise, and subscriptions. This platform enables entrepreneurs and small businesses to set up a fully branded online storefront in just minutes, providing a seamless experience for both sellers and buyers. Users often seek alternatives to Sellfy for various reasons, including pricing structures, feature sets, and specific platform needs that better align with their business goals. When exploring alternatives, consider factors such as ease of use, available features, customer support, and transaction fees. It’s essential to find an option that not only meets your current needs but also supports future growth as your online business evolves. The right alternative should simplify your selling process while providing the flexibility and functionality necessary to succeed in the competitive e-commerce landscape.