Store in the Magpie app has Stock count. Scan an item's barcode with the camera, or search by name, SKU or barcode, and enter how many you counted.
Review count lists the counted items with the change to each one's stock, and the tracked items you have not counted. Submit count sets each counted item's stock to the number you entered and records the change in its stock history as a stock count correction, with your note. Items you did not count keep their stock.