S5's public product story centres on assortment planning — what to carry, how much by size, when and where. That's a real capability and a genuinely hard problem. Buyer's Toolbox AP covers merchandise financial planning, open-to-buy, sales forecasting, category and WSSI, vendor planning, collections and key items in one connected product, with allocation, data science and exception intelligence as extensions that add without re-implementation. Ask both vendors to walk your full planning calendar, pre-season through in-season reforecast.
ANT USA has been building merchandise planning software since 1992 — 200+ implementations across more than 20 countries, in farm and ranch, specialty apparel, footwear, outdoor, museum retail and pharmacy. Ask any vendor how many retailers in your vertical are running their system today, and ask to speak to three of them.
Buyer's Toolbox AP starts at $995 a month, published, annual, billed quarterly, no multi-year lock-in — and we build a working proof of concept on your data over one to two weeks before you sign anything. S5 does not publish pricing. Ask both vendors for a three-year all-in number and a working system on your own hierarchy and sales history.
Trusted by planning teams across 20+ countries for over 30 years.



























“Toolbox is a very easy to use tool that allows planning across a wide range of taxonomy levels and locations. I've been using the tool for over a decade and am continually impressed by how responsive the support team is and how much they care about their product and their clients. Managing OTB and forecasting sales using the system is user friendly and easy to learn and implement.”
A merchandise planning director past a decade of daily use — running OTB and sales forecasting across a wide range of taxonomy levels and locations, season after season, on the same system.
— Chase S., Director of Merchandise Planning
| Aspect | Buyer's Toolbox | S5 Stratos |
|---|---|---|
| Track record | Merchandise planning since 1992 — 34 years, 200+ implementations, 20+ countries. | Cloud AI products for retail and CPG. Publicly named reference: Express, announced 2020. |
| Planning scope | MFP, OTB, sales forecasting, category/WSSI, vendor planning, collections, key items — one product. Allocation, data science and exception intelligence as extensions. | Public product evidence centres on S5 Assortment; merchandise financial planning also offered. Ask which modules are in production today and with whom. |
| Assortment planning | Attribute-aware assortment within the connected plan. | A genuine strength — AI/ML at hyper-localized level, buy by size, fashion and basic product types, pre-season and in-season. |
| Planning depth | Top-down, bottom-up, middle-out. Item/week/location, attribute-aware. Cost, Retail and Units at any granularity. | Ask to see OTB at multiple hierarchy levels and how in-season reforecasting flows back to the financial plan. |
| Wholesale | Item-level orders, backorders, cancellations and returns, reserved stock, retailer accounts, availability-to-promise — reflowing into OTB. | Ask whether wholesale account planning is supported. |
| Usability | Glass Box — the formula is visible in the cell; planners write their own KPIs and change hierarchies without a ticket. | Positions on embedding data science into user-friendly workflows for everyday users. |
| Verticals | Farm and ranch, specialty apparel, footwear, outdoor, museum retail, pharmacy, multi-category. | Retail and CPG; public evidence is apparel-weighted. |
| Integration | Epicor, Celerant, Mi9, KWI, Horizon, Retail Pro, Jesta, Aptos, D365, NetSuite, SAP, plus custom and legacy systems. | Integrates with existing technology platforms. Ask about your specific system of record. |
| Deployment | Cloud, on-premise or hybrid. Your IT team decides. | Cloud. |
| Pricing transparency | Published: from $995/month. Annual, billed quarterly, no multi-year lock-in. | Not published. No independent cost estimate located. |
| Proof before contract | Free working proof of concept on your hierarchy and sales history, in 1–2 weeks. | Ask whether they will build a working plan on your data before contract. |
| References in your vertical | Multiple referenceable customers across farm and ranch, footwear, outdoor, specialty and museum retail. | Ask for three references in your vertical, at your scale. |
Age and usability aren't the same thing, and we'd agree that plenty of long-lived planning systems are painful. Ours has been shaped by planner feedback for 34 years, and the test we'd offer is simple: put both in front of your planners with your own data and let them work a real plan for a week. We'll build that at no cost in one to two weeks. Whichever system your team still wants to use on the Monday after, choose that one.
Their assortment capability is real and we won't pretend otherwise — if hyper-local assortment is the centre of your problem, look at it closely. What we'd ask you to consider is scope. Assortment sits inside a planning calendar: the financial plan sets the frame, open-to-buy governs the spend, in-season reforecasting moves both. Buyer's Toolbox does all of that in one product, with attribute-aware assortment inside it, and our data science covers price and markdown optimization, elasticity, lost sales, affinity and cannibalization. Ask both vendors to walk the full calendar.
Sometimes it does, and small vendors can move quickly. What smaller also means is fewer retailers who've already hit the problems you're about to hit. We have 200+ implementations across 20+ countries — every hierarchy oddity, fiscal calendar, multi-banner structure and legacy integration we've encountered is already in the product. Ask any vendor for three references in your vertical at your scale, and call them.
Three tests, given to both. First, a working system built on your own data before any contract — insist your planners can actually use it, not just watch a demo. Second, a three-year total cost covering licence, implementation, seats and support. Third, the one most buyers skip: a scripted change request. Ask each vendor to price and schedule the same three changes twelve months after go-live. Add a hierarchy level. Add a custom KPI. Restate a formula.
We'll build a working proof of concept on your data, your categories, your hierarchy — no cost, no commitment. Then talk to three of our customers in your vertical.
Our retail experts are ready.