Purchase Order & Inventory Lite / Retail Reorder

$35.00

a single shop, counter, or small kitchen for whom a full inventory suite is more software than the place will ever use.

Local-firstNo telemetry — nothing phones homeNo lock-inNo migration

Hand it one inventory CSV and it works out each item’s reorder point from how fast it sells and how long the supplier takes, flags everything at or below it, and hands you draft purchase orders grouped by supplier, ready to check and send.

$35 a month for the shop. No per-terminal fee, no annual contract. Cancel any day and the order guides you already ran stay on your disk.

The shelf that’s empty on a Saturday

You sell out of the one thing everyone came in for, on your busiest day, because the reorder lived in someone’s head and that someone was off. Or the opposite happens: you over-ordered, and now cash is sitting on a shelf as stock you won’t move for a month.

A small shop feels both mistakes right away, in the till and in the back room. The spreadsheet that’s supposed to prevent it only works when someone remembers to open it.

One count in, a reorder list and draft POs out

  1. Export your inventory to a CSV: what each item is, how much is on hand, how fast it sells, lead time, cost, and supplier. The column names are yours to map.
  2. For any row missing a usage figure, it derives one from a sales export, dividing total quantity by the days you actually sold.
  3. It sets each item’s reorder point from usage times lead time plus a safety cushion (20% by default), flags everything at or under it, and suggests a quantity rounded up to your pack size.

What you get back

  • REORDER_REPORT.md: every SKU at or below its reorder point, marked NEEDS_REORDER, so the file is a list of decisions rather than a full inventory dump.
  • PURCHASE_ORDERS.md: a draft PO per supplier, grouped and totaled, ready for you to check and send.
  • The suggested quantity brings you up to double the reorder point, then rounds to a full case, so you’re not ordering three-and-a-bit of something that ships by the dozen.
  • low_stock.csv and inventory.json when you’d rather push the numbers somewhere else.

Who it’s for, and who it isn’t

Built for a single retail counter, shop, or small kitchen where a full inventory platform would be overkill. If a spreadsheet has been the system and it’s starting to hurt, this is the step up from it.

Not for you if your stock has to update live at the register. This runs when you run it, off a CSV. A store that needs real-time counts ticking down on every sale wants a POS-linked system instead.

What it replaces, and what those do better

A reorder spreadsheet, or the inventory built into a retail platform like Square or Lightspeed. Those platforms are better at one big thing: stock that decrements automatically as you ring sales, plus barcode scanning at the counter.

What that costs is living inside their ecosystem and their pricing. This is a flat monthly fee, no register integration to stand up, one CSV in and a supplier-ready order list out. For an operator who counts stock by hand anyway, that’s enough.

Your data, and where it lives

Your SKUs, suppliers, costs, and margins stay on the machine. It reads the inventory CSV, optionally a sales CSV, and writes the reorder files back to disk at 0600 permissions. Nothing uploads.

What you pay your vendors and what you keep on the shelf is competitive information. It doesn’t need to sit on anyone else’s server to tell you what’s low.

$35 a month, and your first order guide

Point it at your inventory CSV, set the output folder, and run. First reorder list in a few minutes. The safety percentage and pack sizes are yours to tune once you see how the first run lines up with what your gut already told you.

Flat monthly, cancel any day, and the order guides you generated are plain files that stay put.

Security and privacy

Handles small-operator inventory data (on-hand counts, suppliers, unit costs) and, optionally, sales history. Security is designed in.

Principles
Local-first. INVENTORY_CSV/SALES_CSV are read from disk and never transmitted anywhere; nothing in this tool touches the network. Nothing is uploaded, no telemetry, no cloud dependency.
Non-destructive. Source CSVs are only read, never modified or deleted.
Least privilege. Reads INVENTORY_CSV/SALES_CSV, writes only under OUTPUT_FOLDER.

Protections implemented (v0.1.0)
Path-traversal defense — every output filename is sanitized (safeSegment) and every write is checked with assertWithinRoot(), so reports and draft POs can’t be written outside OUTPUT_FOLDER.
Fail-fast config validation — clear errors for missing/invalid INVENTORY_CSV/OUTPUT_FOLDER/SAFETY_PCT before any file is touched.
Restrictive permissions — all generated output (REORDER_REPORT.md, PURCHASE_ORDERS.md, inventory.json, low_stock.csv) is written 0600.
Defensive parsing — the CSV parser and currency/number parser never throw on malformed input (missing fields default to empty string, unparseable numbers default to 0); a bad row degrades that SKU’s numbers rather than crashing the run.
Secrets discipline.env and generated Inventory//Purchase Orders/ output are git-ignored; no secrets or client data in the repo.

Distribution / AV trust

Known limitations / roadmap
– Reorder math is a simple heuristic (usage × lead time × safety padding) — it doesn’t account for seasonality, promotions, or supplier minimum order quantities beyond pack_size. Treat suggested quantities as a starting draft, not a final order.
avg_daily_usage derived from SALES_CSV is a flat average over all days a SKU sold; it does not weight recent sales more heavily or detect trend changes.
– Draft POs are grouped by an exact, case-sensitive match on the supplier column — typos or inconsistent supplier naming in the source CSV will split one supplier’s items across multiple POs. Normalize supplier names in the export if this happens.

Reporting
Report suspected vulnerabilities privately to the maintainer before public disclosure.

Frequently asked questions about Purchase Order & Inventory Lite / Retail Reorder

What is purchase order & inventory lite software, and which operators is it for?

The purchase order & inventory lite software here is a light tool that does two connected jobs for a very small shop, it forecasts when you are about to run out of something and it tracks the purchase orders you send to restock. You load in your current inventory and your sales history, and the tool works out a reorder point for each item, the level at which you should buy more so you neither run dry nor sit on dead stock. When an item crosses that line, you generate a purchase order and track it until the goods arrive. The buyer is usually an independent retailer who finds a full suite overkill but still needs to know what to reorder and when.

The reason a tool this focused exists is that most small operators are stuck between two bad options. On one side is a spreadsheet that never tells you anything until the shelf is already empty. On the other is a heavy platform that wants to run your registers, your accounting, and your whole operation for a price that does not fit a one-location shop. This tool sits deliberately in the middle. It is the reorder and purchase-order brain on its own, sized for an operator who wants the forecasting without the overhead.

The workflow is short. You import your inventory counts and sales history. The tool calculates a reorder point per item from what actually sells and how fast. As reorder triggers hit, you generate and track purchase orders through the tool, so the paperwork behind restocking lives in one place instead of scattered emails and sticky notes. You stay in control of the actual order, because you know your suppliers and your cash position better than any forecast does.

Those purchase orders are also business records worth keeping. The IRS guidance on how long to keep records explains that a small business is expected to hold onto its supporting documents, generally for at least three years and longer in some cases, and the purchase orders and receiving records this tool produces are exactly that kind of document. Keeping them tidy through the reorder tool means the trail behind your stock purchases is already organized when your bookkeeper or an auditor wants to see it.

It fits how a small shop actually works. The purchase order & inventory lite software covers a desktop workflow as well as connected data imports, so you can bring in what you already track rather than retyping your catalog from scratch. There is no demand that you migrate your entire business onto it first. You point it at your numbers, it learns your reorder points, and you keep ordering the way you always have, only with a warning before you stock out instead of after.

What you get is a plain, early signal about what to buy and a clean record of the orders you placed. You can see how the forecasting and purchase-order tracking fit together on the Purchase Order & Inventory Lite product page, and see the rest of the tools built for independents on the small business operators page. The tool does the counting and the timing that are tedious to do by hand, and leaves the ordering decision, and the supplier relationships, exactly where they belong, with you.

How does the reorder-point forecasting actually work, and does it help with perishable stock?

The forecasting in this purchase order & inventory lite software is built from your own history rather than a generic rule of thumb. You import your inventory counts and your sales history, and the tool looks at how fast each item actually moves. From that it sets a reorder point per item, the stock level at which you should place an order so the new goods arrive before you run out. The math accounts for how quickly something sells and how long it usually takes to restock, which is why the trigger lands earlier for a fast mover and later for something that sits on the shelf.

The practical effect is that the shelf tells you when to buy instead of surprising you when it is empty. A small operator carrying hundreds of items cannot watch every one, and the ones that stock out are almost always the ones nobody was looking at. By computing a reorder point for each item, the tool moves that watching off your memory and onto a number, so you generate a purchase order when the trigger hits rather than when a customer points at a bare hook.

Perishable stock is where getting the timing right matters most, and it is where over-ordering hurts twice, once in spoilage and once in the risk of serving something past its prime. For any operator handling food, freshness is not only a cost question but a safety one. The rules that govern retail food are modeled on the FDA Food Code, the code state and local regulators adopt for restaurants and retail food, and those rules care about how stock is rotated and how old product is handled. Ordering to a sensible reorder point helps you turn perishable stock over at a steady pace instead of buying in bursts that leave product aging in the back.

The tool does not inspect your cold storage or manage food safety for you, and it is honest about that boundary. What it does is keep you from the two failures that push perishables toward trouble, running so low you scramble to restock and buying so much that product spoils before it sells. A reorder point tuned to real sales is the middle path, enough on hand to serve customers without a pile aging out.

Because the reorder points come from your data, they get better as the tool sees more of your history. A seasonal swing that catches a spreadsheet flat-footed shows up in the sales history the tool reads, so the trigger adjusts as your pace changes. You are not locked to a number you set once. The forecast tracks what your shop is actually doing week to week.

If perishable timing or stockouts are what keep you up at night, this is the part of the tool that earns its keep. You can see how the reorder engine reads your history on the Purchase Order & Inventory Lite product page, and how it fits alongside other tools for independent operators on the small business operators page. Import your numbers, let the purchase order & inventory lite software set the reorder points, and buy on a schedule your sales actually justify.

Where does my inventory and sales data live, and is it safe with this tool?

Your data stays close to you. This purchase order & inventory lite software covers a desktop workflow, so your inventory counts, your sales history, and your supplier orders do not have to be pushed up to a cloud platform just to get reorder forecasting. For a small retailer that is the honest answer to the question worth asking of any software, which is who else can see my numbers. Here the default is nobody, because the forecasting runs where your files already sit.

That matters because a shop’s inventory and sales data is more sensitive than it looks. It reveals your margins, your suppliers, your pricing, and the pace of your business, the kind of information you would not hand to a competitor. The FTC’s plain-language FTC guide Protecting Personal Information is organized around a few simple ideas, take stock of what you hold, keep only what you need, lock down what you keep, and get rid of what you no longer use. A tool that keeps your data on your own machine fits that thinking, because there is no extra copy living on a server you cannot see.

The tool keeps a record of the orders you generated and the imports you ran, so you can trace what it did. When you use connected data imports to bring in sales history, you are pulling your own numbers in rather than surrendering your books to a hosted system that then owns them. If you want to archive a year of purchase records, you do that with your own files, on your own terms.

Being desktop-based does not make security automatic, and it would be misleading to say so. The computer running the tool still needs the ordinary care any business machine needs, a password, current updates, and a backup so a failed drive does not erase your records. What this setup removes is the added exposure of a third-party breach, because your data is not sitting in a shared cloud waiting to be swept up in someone else’s incident. You are looking after a smaller, simpler surface, which is exactly what a small shop can realistically manage.

The same discipline the FTC guide describes applies to any customer or payment details that drift into your records. Keep only what you truly need, store it where you can lock it, and clear out what has aged past use. This tool supports that by leaving your inventory and sales data in your hands, where you can apply those steps, instead of scattering it across services you have to trust blindly.

If data location is the thing holding you back from a reorder tool, this is the point in its favor. You can read how the desktop-first approach works on the Purchase Order & Inventory Lite product page, and see how it lines up with how other independents operate on the small business operators page. Your counts, your sales, and your supplier history stay yours, and the purchase order & inventory lite software earns its place without asking you to give that up.

How is it different from Square, Lightspeed, inFlow, or Sortly?

The difference is weight and intent. Square, Lightspeed, inFlow, and Sortly are capable, but they are built to be bigger than reordering, and a very small operator often ends up paying for a whole platform to get the one piece they actually need. This purchase order & inventory lite software does the reorder and purchase-order job on its own, sized and priced for a single-location shop that finds a full suite more than it wants to run.

Start with the register question. Square and Lightspeed are point-of-sale systems first, which means they naturally want to own your sales and your payments as well as your stock. That is fine for some shops, but it ties your inventory tool to your checkout, and the card sales flowing through those registers show up on a IRS overview of Form 1099-K, the form third-party payment networks send for the goods you sold. The reorder tool takes a lighter stance. It reads your sales history to forecast reorders, but it does not need to become your register, so you can keep whatever checkout you already use.

Tools like inFlow and Sortly come at it from the inventory-management side and can grow into fuller systems with features a tiny shop may never touch. There is nothing wrong with that depth if you need it. The point of this tool is that many operators do not, and paying for warehouse-scale features to get a reorder point is the expensive way around. It stays focused on forecasting and purchase-order tracking, which is the part a small retailer actually lacks.

Price and footprint follow from that focus. Because the tool is not trying to be your accounting, your checkout, and your warehouse system all at once, it can be priced for a shop that has been shut out of the full suites. It covers a desktop workflow plus connected data imports, so you bring in what you already track instead of migrating your whole operation onto a new platform before you see any benefit.

There is also a difference in where your data sits. Several of the bigger systems are cloud-first by design, which means your sales, your stock levels, and your supplier orders live on their servers as part of the arrangement. This tool leans on a desktop workflow, so your numbers stay on your own machine. For an operator uneasy about handing years of sales history to a platform, that alone can settle the choice.

What you give up by going lighter is worth stating plainly. You are not buying an all-in-one that also runs your floor and your books. If you truly need that, one of the bigger systems may fit you better. But if what you actually lack is an early warning about what to reorder and a tidy record of the orders you placed, this tool delivers that without the platform tax.

The purchase order & inventory lite software is the focused alternative for the operator who wants reorder forecasting without the suite. You can compare how it fits your shop on the Purchase Order & Inventory Lite product page, and see where it sits among tools for independent operators on the small business operators page. One job, reorder timing and purchase-order tracking, at a price a single location can carry.

Does this tool handle labor or payroll, or is it inventory only?

It is inventory only, and it helps to be clear about that boundary. This purchase order & inventory lite software forecasts reorder points and tracks purchase orders. It does not run payroll, schedule staff, or keep your labor records. If you were hoping for one tool that handles both the stock side and the people side of a small shop, this is the stock side, done well, and nothing more.

That scope is deliberate. A very small operator has two big cost centers, what you buy and who you pay, and trying to cram both into a single lightweight tool usually produces something that does neither job properly. The tool keeps its focus on ordering, forecasting when to restock and tracking the purchase orders you send, so it stays simple enough for one person to actually use between customers.

The labor side, though, comes with its own real recordkeeping duty that no inventory tool removes. Under federal wage law, an employer has to keep certain payroll records, and the DOL Fact Sheet #21 on FLSA recordkeeping sets out that employers must preserve payroll records for at least three years and the wage-computation records behind them for two. That obligation sits with you regardless of what software you use for stock, and it is worth handling with a proper payroll process rather than hoping a reorder tool will cover it.

Keeping the two apart is not a weakness, it is honesty about what the tool is. The reorder tool does not want your employees’ pay data, and keeping that information out of an inventory system is safer anyway, because it means one less place your staff’s personal details live. You track stock here and payroll where payroll belongs, and each stays cleaner for it.

What the inventory side does contribute to the wider picture is a clean record of your purchase costs. For an operator watching total spend, the purchase orders the tool tracks give you the buying half of the story in an organized form, which your bookkeeper can set alongside your labor costs when they look at the whole operation. The tool produces the stock records, and a proper payroll process produces the labor records, and together they let someone see the full cost of running the shop.

This split also keeps each set of records where the rules expect it. Your payroll records answer to wage law and its retention windows, while your stock and purchase records answer to the general business-records guidance the IRS publishes. Trying to force both through one lightweight reorder tool would blur that line and make an audit harder, not easier. Letting inventory be inventory keeps the buying records clean and lets your payroll system keep the labor records to the standard the law actually asks for.

So the short answer is no, this is not a payroll or scheduling tool, and it does not pretend to be. It is the purchase order & inventory lite software that keeps your reordering under control. You can see exactly what it does and does not cover on the Purchase Order & Inventory Lite product page, and see the other tools an independent operator might pair with it on the small business operators page. Handle stock here, handle people with the right tool for people, and keep the records each one requires.

Attributes Value
Deployment

Hybrid

Platform

Web, Windows

License Type

Subscription

Billing Period

Monthly

Target Customer

Small Business & Retail

Free Trial

Yes

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