Stock that keeps itself, because the bill already knows.

01 · The principle

Stock you have to update by hand is stock that is wrong by Thursday

Most small shops that abandon inventory software abandon it for the same reason: it asked them to maintain a second set of numbers alongside the selling. Here there is no second set. A bill takes stock down, a recorded purchase puts it back, an adjustment corrects a count — and those are the only three things that can move a figure, so the figure is either right or explainable.

• Sales reduce stock as a consequence of billing
• Purchases from a supplier increase it
• Manual adjustments are recorded with a reason
• Nothing else can change a quantity

02 · Alerts

Being told what is low, once, in a way you still read next week

Each product carries the level at which you want warning. The phone works out what is below it and says so once a day rather than every time a packet sells, because a notification that fires on every transaction is one people learn to swipe away without reading. When exactly one item is low it is named; when six are, it says six, because naming one of six makes the other five invisible.

• A low-stock level per product
• One alert a day, not one per sale
• The item named when there is only one
• Works offline — it is computed on the phone

03 · Movement

Every change, with the thing that caused it

The movement feed puts sales, purchases and adjustments into one signed, source-tagged list, so the question "why is this thirty and not thirty-four" has an answer rather than a theory. Filter it by source to see only what was sold, only what came in, or only what someone corrected by hand.

• Sales, purchases and adjustments in one feed
• Each entry signed and tagged with its source
• Filter by source, product or date
• Export to CSV, or print

04 · Units

Counted in the unit you actually sell in

Units are free text and quantities take decimals, so a shop selling rice by the kilo, oil by the litre, cement by the bag and wire by the metre keeps all four right. Choosing your line of trade suggests the units that trade uses, and you can type any other — in any script.

• kg, g, ltr, ml, pcs, box, dozen, peti, bora, bag, ream
• Decimal quantities for loose and cut goods
• Suggestions match your trade, not a generic list
• Any script — type the word your shop uses

05 · Valuation

What the stock on your shelves is worth

The valuation report prices what you are holding at its latest purchase cost, which is the basis a shopkeeper can check against the last bill from their supplier. It prints, exports and filters by date, and like every report here it reads figures stored at the time rather than recalculating them now — so last quarter's number does not change because you edited a price this morning.

• Priced on latest purchase cost
• Filter by date, print or export to CSV
• Purchase cost hidden from billing staff by role
• Reports read stored figures, never recalculate