A product sale is the richer way to log revenue — slightly more setup (the product has to exist in your catalogue first), but every sale teaches nouz one more thing about how your shop performs. After a few weeks of product sales, the Statistics tab can rank your catalogue meaningfully.
01 How to enter one
- 1Open Revenue
Pick the date.
- 2Click + Product sale
Opens the product picker.
- 3Pick a product
Searchable list — type the first few letters of the name.
- 4Type quantity
How many you sold today. Sale price and COGS auto-fill.
- 5Pick cash or card
Or split the row in two if both were used.
- 6Save
Green toast. Entry appears in the list.
02 Why COGS auto-fills
When you set up a product, you give it a per-unit COGS — say, €0,42 for a cappuccino. Logging a sale of 80 cappuccinos multiplies that by 80 = €33,60 of COGS, captured automatically. You don't have to type the math.
The COGS used is a snapshot taken at the moment of the sale, not a live reference to the product row. This is what makes nouz safe to use as a sandbox — you can bump the cappuccino COGS later (when oat milk gets more expensive) without retroactively changing yesterday's margin. See Editing a product later for why that matters.
03 Mixing with manual
You can log product sales and a manual entry on the same date without conflict. The P&L sums all entries for the day, manual + product. Just don't double-count the same revenue both ways — one manual entry for "everything else" and individual product sales for your high-volume items is the typical pattern.
04 What this unlocks
Product sales are what enables the deeper Statistics features:
- Product performance ranking — see which items contribute the most gross margin.
- Margin drift detection — get an alert when a product's margin slips week over week.
- Price experimentation — measure before and after when you change a price.
- Catalogue insights — see your top-five performers and the long tail.
None of this is available for manual entries. The trade-off for the slightly higher entry friction is significantly richer downstream analytics.
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