One app to track stock and profit across every channel you sell on

The reseller profit problem

You sold 47 units this week across your shop, eBay, and a wholesale order. Revenue looks healthy. But how much did you actually make? After eBay fees (12.8%), packaging, postage, the cost of the goods themselves, and shop rent, what is the real number?

Most resellers cannot answer that question without an hour and a spreadsheet. And most will never do it, because an hour at the end of a trading day is an hour they do not have. So the real number stays invisible until the bank balance tells the story, usually too late.

TunedBooks solves this by doing the calculation at the point of sale. Every time you record a transaction, the app already knows the cost price from your inventory. It already knows the platform fee structure. It does the subtraction in real time and updates your dashboard. You never build a spreadsheet.

What TunedBooks does for resellers

Built for multi-channel selling

Resellers rarely sell through one channel. You might run a physical shop, list on eBay and Vinted, take wholesale orders by WhatsApp, and sell at weekend markets. Each channel has different fees, different margins, and different logistics.

TunedBooks lets you tag each sale by channel. The dashboard breaks down your numbers by channel so you can see which one is worth your time and which one is eating margin with fees you have not been tracking.

Know your real margin on every product

A product that sells for £25 looks profitable. But after the £3.50 you paid for it, £3.20 in eBay fees, £2.85 in postage, and £0.40 in packaging, the real margin is £15.05. That is a 60% margin. Good.

Another product sells for £12. Cost was £7, fees were £1.54, postage was £2.85, packaging was £0.40. Net profit: £1.21. That is a 10% margin. You are working for nearly nothing on that item. Without per-product profit tracking, you would never know.

TunedBooks shows this for every item you sell. No formulas. No end-of-month reconciliation. The number is there the moment the sale is recorded.

For distributors and wholesalers

If you supply other businesses, you need invoicing, bulk order tracking, and margin visibility across product lines. TunedBooks handles all three. Generate professional invoices, track which customers have paid, and see which product lines carry healthy margins and which ones are being sold too cheaply to stay profitable.

Multi-location distributors can record sales from different warehouses or depots. Every sale updates the central inventory, so you know what you have across all locations without calling around.

Works offline, built for traders who move

Market traders, pop-up sellers, and anyone who does not have reliable internet all day needs an app that works without it. TunedBooks saves every sale, expense, and inventory change locally on your phone. When you reconnect, it syncs. Nothing is lost.

This is not a web app that fails when the signal drops. It is a native app on iOS and Android that treats offline as the default, not the exception.