With everyday expenses climbing, consumers are turning to new tools to stretch their budgets and cashback apps are emerging as one of the fastest-growing trends in personal finance. Already popular in the United States, these platforms are now preparing to launch in the UK, promising to put extra money back into people’s pockets on the spending they already do. Unlike loyalty schemes that exchange purchases for points or vouchers, cashback apps return actual money to your account. The concept is simple: link your bank card to the app, shop at participating retailers, and earn a percentage of each transaction back.…