Talk to any business owner running a manufacturing plant, a retail chain, or a hotel group, and you will notice a strange pattern: They pay thousands of dollars every year for a big-name ERP or management software. Yet, if you walk onto the factory floor or into the back office, what are the managers actually using? Microsoft Excel. They download data from their expensive software, copy-paste it into spreadsheets, fix calculations manually, and message numbers on WhatsApp. Why...