For bar managers and owners who still count open bottles by eye.
Scan the barcode, put the bottle on a Bluetooth scale, confirm. Once your catalogue is set up, that is the entire job — about 18 seconds per bottle.
It happens for one reason: the level in an open bottle is judged by eye, so next week one estimate gets compared against another estimate.
A bar loses 20–30% of its liquid stock between delivery and the till. A fifth of that is not theft and not overpouring — it is simply not knowing what is left.
That gap goes straight into your pour cost — and it grows with every count.
Shrinkage and accuracy ranges are industry averages for bar stock.
The bartender scans the barcode with the phone camera and puts the bottle on a kitchen Bluetooth scale. The weight arrives over Bluetooth — nothing is typed in. Invento Bar subtracts the empty bottle and the pourer, divides by the density of that particular drink, and shows what is left in millilitres and per cent. Sealed bottles are never weighed — they are counted as units in the same line.
The camera is the screen, not a button behind a menu. No barcode in the catalogue? Add the bottle in three fields without leaving the session.
The weight arrives over Bluetooth by itself. Nothing is ever recorded without a person pressing the button — the app does not save behind your back.
The difference between two counts is your real consumption, line by line. Compare it with what the till sold and the gap is right there.
Then it repeats. Scan, weigh, confirm — about 18 seconds a bottle, so a bar with 100 bottles takes around half an hour once the catalogue is in place. The first count is slower: that is when the catalogue gets built.
Screens show sample data.
Weighing a bottle is easy. Getting a number you can defend in front of your staff is where products fall over.
Tools that store one density per category get cream liqueurs wrong. A “liqueurs” default of 1.06 against Kahlúa’s real 1.15 makes the app read empty on a bottle that is not empty.
Glass drifts by tens of grams between batches. Weigh one empty bottle of yours and your bar uses that figure. The shared catalogue stays untouched for everybody else.
Every line freezes the volume, tare and density it was measured with. Correct a catalogue entry today and your March figures stay exactly as they were.
Each count is a snapshot. The difference between two is what actually left the shelf, in millilitres.
Export for your accountant, or sync a count straight into a spreadsheet your team already lives in.
Nobody unscrews a pourer to weigh a bottle. Pick it once and its weight comes out of every reading.
Any Chrome browser — Android included, where the best-known competitor still ships iOS only.
The manager sets up staff, catalogue and reports. A bartender sees a count and a search field — nothing else.
Interface in the language your staff actually speak. Hosted in Europe, under EU data rules.
Kitchen scales have no shared Bluetooth standard, so we do not promise “any scale”. We support a specific, growing list of models that you can buy locally for roughly €28 with a warranty — and we tell you which ones before you buy. Manual weight entry is a first-class button, not a fallback hidden in a corner.
We are in early access — the full release lands around October 2026, and the drinks catalogue is still being built. You will meet bottles we do not have yet. Add one and the subscription pays you for it, because your measurement makes the catalogue better for every bar after you.
A bottle that is not in our catalogue yet: scan it and fill in the name, volume and category.
Sealed and full, then empty, rinsed and dried. Those two numbers are what makes every later reading exact.
Ten positions nobody had logged before, and your venue has a free month.
Only bottles anyone can buy in a shop count. House infusions, your own syrups and anything the bar makes itself are not accepted — nobody else can use those measurements.
First month free for venues joining during early access. Priced per venue afterwards — the billing term is the only difference. Every plan has every feature: no setup fee, no per-seat charge, no paid onboarding.
Leave your details and we will call you back. On the call we show the count running on your own bottles, tell you which scale to buy, and help you load your catalogue so the first real count is not the slow one. Early-access venues start on a free month.
We reply within one business day and send a call link. Bring one open bottle and your scale if you have one — we’ll count it live on the call.