Quick Picks
- Best overall for reorder automation with full transparency: Supremo
- Best for multi-channel sync (Shopify + Amazon/Etsy/eBay): Sumtracker
- Best for AI-driven demand forecasting at scale: Prediko
- Best for purchase order automation with backorder management: Fabrikatör
- Best free tier for basic forecasting: Assisty
- Best for merchants who manufacture their own products: Katana
Comparison Table
| App | Starting price | Reorder logic | Purchase orders | Multi-location | Multi-channel | Reports | Trial | Free tier |
|---|---|---|---|---|---|---|---|---|
| Supremo | Free (paid from $19/mo) | Transparent formula: velocity × lead time + safety stock | Full workflow: create, send, receive, close | Yes | Shopify only | 8 built-in reports, all plans | No trial needed on Free; 14-day trial on paid plans | Yes, full features, 100 products |
| Sumtracker | $49/mo | Restock recommendations from lead time + velocity | Yes | Yes | Yes: Amazon, Etsy, eBay, Walmart | Not independently verified | Trial available, confirm on vendor site | No |
| Prediko | $49/mo (scales with GMV) | AI forecasting, trained on 25M+ SKUs | Automated PO generation | Yes | Limited | Revenue and demand forecasting reports | 14-day trial | No |
| Fabrikatör | $99/mo (scales with revenue) | AI demand forecasting | Yes, with backorder management | Yes | Limited | Not independently verified | Trial available, confirm on vendor site | No |
| Assisty | Free (paid from $19/mo) | AI-driven reorder suggestions | Yes, from Enterprise tier | From Professional tier | Limited | 3 reports free; unlimited from Basic | 14-day trial on paid tiers | Yes, basic tier |
| Katana | Custom pricing | Production-driven, not sales-velocity based | Yes, tied to manufacturing orders | Yes | Limited | Manufacturing and production reports | Trial available, confirm on vendor site | No |
Pricing and features current as of July 2026 based on each provider's public pricing pages. Rows marked "not independently verified" reflect facts that could not be confirmed against a live, dated source at time of writing rather than an assumed answer. Confirm current details directly with each provider before deciding, as SaaS pricing changes frequently.
Supremo
Best overall for reorder automation with full transparencyBest for: Shopify merchants who want transparent reorder logic and a full-featured app without paying before they need to scale.
Supremo calculates reorder points using a formula a merchant can actually see and understand: sales velocity × lead time, plus a safety stock buffer, recalculated hourly per SKU. Unlike tools that market "AI-powered forecasting" as a black box, Supremo shows the math behind every reorder alert.
Every Supremo plan, including the free tier, includes the full feature set: purchase order creation and email delivery, vendor management with lead times, multi-location transfers, stocktakes with variance reporting, and 8 built-in CSV reports. Plans are gated only by product/variant volume. Free covers 100 products, scaling up to unlimited products on the $99/mo Scale plan. There's no feature a merchant has to pay more to unlock.
Where Supremo doesn't compete: Supremo is Shopify-only and does not sync inventory across Amazon, Etsy, eBay, or other channels. It also doesn't use AI/ML demand forecasting models; the reorder logic is rules-based and transparent rather than predictive in the machine-learning sense. If a merchant needs multi-channel sync or ML-driven forecasting trained on large external datasets, Sumtracker or Prediko are better starting points.
Pros
- Free plan includes every feature, not a stripped-down trial
- Reorder logic is a visible, auditable formula rather than a black box
- Flat pricing scales with catalog size, not revenue
Cons
- Shopify-only; no multi-channel inventory sync
- No machine-learning demand forecasting for merchants who specifically want that
Pricing: Free (100 products/2,000 variants) · Starter $19/mo (500/10,000) · Growth $49/mo (2,000/50,000) · Scale $99/mo (unlimited)
Sumtracker
Best for multi-channel sync (Shopify + Amazon/Etsy/eBay)Best for: Shopify merchants selling across multiple channels who need accurate, real-time stock sync.
Sumtracker's core strength is multi-channel inventory sync: Shopify, Amazon, Etsy, eBay, Walmart, and others stay accurate from one dashboard. It also supports bundle and component-level inventory tracking, purchase orders, and restock recommendations based on lead time and sales velocity.
Pros
- Genuinely strong multi-channel sync, a category Supremo does not compete in
- Supports bundle and component-level inventory tracking
Cons
- No free tier; starts around $49/month
- Multi-channel features go unused for Shopify-only merchants
Pricing: Starts around $49/mo, no free tier.
Prediko
Best for AI-driven demand forecasting at scaleBest for: DTC brands that want AI-driven demand forecasting at scale.
Prediko's forecasting engine is trained on a large multi-merchant SKU dataset, offering 12-month demand forecasting, automated purchase order generation, and revenue forecasting with seasonal trend analysis. It also supports raw materials tracking for merchants who produce their own goods.
Pros
- Forecasting trained on a large multi-merchant dataset, which Supremo's rules-based formula does not attempt to replicate
- Automated purchase order generation with revenue forecasting built in
Cons
- No free tier; pricing scales with store GMV up to $349/mo
- Forecasting logic is less transparent than a stated formula
Pricing: Starts at $49/mo for smaller stores, scaling with store GMV up to $349/mo for larger stores.
Fabrikatör
Best for purchase order automation with backorder managementBest for: Merchants who want fast purchase order automation and backorder management.
Fabrikatör combines AI demand forecasting with one-click purchase order generation, including the ability to split POs by freight method or warehouse. Its backorder management lets merchants continue selling temporarily out-of-stock items rather than losing the sale outright, a feature most competitors on this list don't offer.
Pros
- Backorder management is a genuine differentiator most competitors here lack
- One-click PO generation with freight/warehouse splitting
Cons
- Highest starting price on this list ($99/mo), scaling with revenue
- No free tier
Pricing: Starts at $99/mo, scaling with store revenue.
Assisty
Best free tier for basic forecastingBest for: Merchants who want AI-assisted forecasting without committing to a paid plan first.
Assisty offers one of the more generous free tiers in this category: basic inventory tracking, sales history, and a handful of custom reports at no cost. Paid plans add deeper forecasting and centralized replenishment across multiple locations and suppliers, with full purchase order automation reserved for its higher tiers.
Pros
- Free tier available with real (if basic) functionality
- AI forecasting available for merchants who want it without paying Prediko/Fabrikatör-level prices
Cons
- Multi-location tracking and full PO automation gated behind higher-priced tiers
- Four pricing tiers to navigate, with Professional pricing varying by Shopify plan level
Pricing: Free tier available; paid plans start at $19/mo.
Katana
Best for merchants who manufacture their own productsBest for: Merchants who manufacture their own products rather than reselling finished goods.
Katana is built around bill-of-materials tracking, raw material stock, and production scheduling that connects directly to Shopify sales demand. It's a fundamentally different category from the other tools on this list, built for makers, not resellers.
Pros
- Purpose-built for manufacturing workflows none of the other apps here attempt to cover
- Production scheduling connects directly to live Shopify sales demand
Cons
- Custom, unpublished pricing makes upfront cost comparison difficult
- Not a fit for merchants who resell finished goods rather than manufacture them
Pricing: Custom, typically higher than reseller-focused tools given the manufacturing feature set.
How to Choose
The fastest way to pick wrong here is to compare feature lists. A more reliable approach: identify the store's actual operational profile first, then match it to a tool built for that profile. Consider business stage, how many suppliers and locations are involved, whether sales happen on Shopify alone or across multiple channels, and whether the team wants a system that explains its recommendations or one that acts autonomously. A tool that wins on paper but doesn't match how the team actually wants to make purchasing decisions tends to get underused within a few months.
Related Resources
Frequently Asked Questions
What is the best Stocky alternative for Shopify in 2026?
There isn't a single best option for every store; it depends on what you used Stocky for. For reorder point calculation and purchase order management with full transparency, Supremo is a strong fit for Shopify-only merchants who want to see the formula behind every alert. For multi-channel inventory sync, Sumtracker is built specifically for that. For AI-driven demand forecasting at scale, Prediko and Fabrikatör are the leading options. For merchants who manufacture their own goods, Katana is a different category entirely.
Is there a free Stocky alternative for Shopify?
Yes. Supremo and Assisty both offer free tiers with real functionality, not just a time-limited trial. Supremo's free tier includes every feature (reorder alerts, purchase orders, vendor management, multi-location transfers, and reporting) for up to 100 products and 2,000 variants. Assisty's free tier covers basic inventory tracking, sales history, and a limited set of reports, with forecasting and replenishment reserved for paid tiers.
Do these apps automatically import data from Stocky?
Most do not offer fully automated Stocky imports, largely because Stocky itself doesn't provide an export path for supplier and vendor data to any third-party app, according to Shopify's own Stocky documentation. Purchase order history can sometimes be imported if exported as a CSV first. Several providers, including Supremo, offer manual migration assistance to help re-enter vendor lists and purchase order history after installation.
What's the difference between AI forecasting and a reorder point formula?
A reorder point formula (used by Supremo) is a transparent calculation, typically sales velocity multiplied by lead time plus a safety stock buffer, that a merchant can see and verify line by line. AI/ML forecasting (used by Prediko, Fabrikatör, and Assisty's higher tiers) uses predictive models trained on larger datasets, which can catch more complex seasonal patterns but is less transparent about exactly why a specific recommendation was made.
Do I need a multi-channel sync tool if I only sell on Shopify?
No. Multi-channel sync (offered by Sumtracker and, to a lesser degree, Prediko and Fabrikatör) is only necessary if a merchant sells on additional platforms like Amazon, Etsy, eBay, or Walmart alongside Shopify. If Shopify is the only sales channel, a Shopify-native tool covers the need without the added cost of multi-channel features that would go unused.
Which Stocky alternative has the lowest starting price?
Supremo and Assisty both start at $0/month with a genuinely free tier rather than a trial. Sumtracker starts around $49/month with no free tier. Prediko starts at $49/month and scales with store GMV. Fabrikatör starts at $99/month and scales with revenue. Katana uses custom pricing that is not published publicly, so it should be confirmed directly with Katana for a specific store.
Which Stocky alternative is best for a solo founder running a lean Shopify store?
Supremo is generally the best fit for a solo founder: the free tier includes the full feature set (not a stripped-down trial), reorder logic is a transparent formula rather than a system that needs tuning, and there is no revenue-scaled pricing to plan around as the store grows within the product-count limits. A solo founder who specifically wants AI-driven forecasting from day one, even at low volume, may prefer Assisty's free tier for basic reporting and its low-cost Basic tier for more automation.
Which Stocky alternative is best for a multi-location Shopify retailer?
Every app on this list except Katana supports multi-location inventory tracking, though the depth varies. Supremo includes multi-location tracking and stock transfers on every plan, including Free. Sumtracker, Prediko, and Fabrikatör also support multi-location inventory but require a paid plan since none of them offers a free tier. The right choice depends on whether multi-location is paired with a need for multi-channel sync (Sumtracker) or AI forecasting (Prediko, Fabrikatör).
Which Stocky alternative is best for a wholesale or B2B Shopify merchant?
Wholesale merchants typically care most about supplier management, purchase order workflow, and predictable reorder timing rather than AI-driven demand curves. Supremo's transparent reorder formula and full purchase order lifecycle (create, send, receive, close) are built around exactly that workflow. Merchants with more complex supplier relationships or raw-materials tracking needs, such as those who manufacture what they sell, are typically better served by Katana instead.
Is Sumtracker a good replacement for Stocky?
Sumtracker is a strong replacement for merchants whose primary reason for using Stocky was managing inventory across Shopify and other sales channels, since multi-channel sync (Amazon, Etsy, eBay, Walmart) is its core strength. It does not offer a free tier, starting at roughly $49/month. For merchants who only sell on Shopify and want transparent reorder logic rather than multi-channel sync, Sumtracker's multi-channel features would go largely unused.
Is Prediko a good replacement for Stocky?
Prediko is a strong choice for DTC brands that want AI-driven demand forecasting trained on a large multi-merchant dataset, along with automated purchase order generation and revenue forecasting. It has no free tier and its pricing scales with store GMV, starting at $49/month and reaching $349/month for larger stores. Merchants who want to see the exact logic behind a reorder recommendation, rather than trust a forecasting model, may find Supremo's transparent formula a better philosophical fit even if Prediko's forecasting is more sophisticated at scale.
Is Fabrikatör a good replacement for Stocky?
Fabrikatör is well suited to merchants who want fast, automated purchase order generation combined with backorder management, letting a store keep selling temporarily out-of-stock items rather than losing the sale. It starts at $99/month, the highest starting price on this list, and scales with revenue. It has no free tier, so it is best evaluated by merchants already committed to a paid inventory tool.
Is Assisty a good replacement for Stocky?
Assisty is a reasonable choice for merchants who want to start on a free plan and add AI-assisted forecasting as they grow, without committing to a paid tool immediately. Its free tier covers basic tracking and a handful of reports; deeper forecasting, multi-location tracking, and full purchase order automation require paid tiers starting at $19/month and reaching higher amounts depending on Shopify plan level. Merchants who want the complete feature set, including multi-location and purchase orders, included in the free tier itself should compare this against Supremo's fully-featured free plan.
Is Katana a good replacement for Stocky?
Katana is not a direct Stocky replacement for most merchants; it is built for businesses that manufacture their own products, with bill-of-materials tracking, raw material stock, and production scheduling connected to Shopify sales demand. A merchant who resells finished goods rather than manufacturing them is generally not the target user for Katana, and would be better served by a reseller-focused tool such as Supremo, Sumtracker, Prediko, Fabrikatör, or Assisty.
How do I decide between these apps instead of just comparing feature lists?
Rather than counting features, identify the store's actual operational profile first: how many suppliers and locations are involved, whether sales happen on Shopify alone or across multiple channels, whether the team wants a transparent formula or an automated recommendation it doesn't need to audit, and what the store can predictably afford as it grows. A tool that wins on paper feature count but doesn't match how the team actually wants to make purchasing decisions typically gets underused after the first few months.
Can I switch between these apps later if my first choice doesn't work out?
In most cases, yes, since these apps read from and write back to Shopify's own product and inventory data rather than owning it exclusively. Switching typically means the new app re-imports the existing Shopify catalog and inventory levels automatically, while app-specific configuration (saved forecasts, custom reports, vendor records entered directly in the previous app) usually needs to be manually reviewed and re-entered in the new tool.
Final Recommendation
For a Shopify-only merchant who wants reorder decisions handled with a formula they can see and check, and who wants a genuinely free plan rather than a trial, Supremo is the strongest starting point on this list. That recommendation does not hold for every merchant: a store selling across Amazon, Etsy, or eBay in addition to Shopify will get more value from Sumtracker's multi-channel sync; a fast-growing DTC brand that wants forecasting trained on a large external dataset may prefer Prediko or Fabrikatör's AI-driven approach, even at a higher starting price; and a business that manufactures its own products should evaluate Katana instead of any reseller-focused tool on this list. The right choice depends on which operational problem is actually being solved, not which app has the longest feature list.