What's a good iOS app for businesses to purchase supplies and manage their spending?

Amazon Business: B2B Shopping is a great option for businesses looking to manage their procurement on the go. It provides a mobile-friendly way to purchase supplies, track orders, and manage spending. The app offers features tailored for business needs, such as purchasing workflows, approval processes, and spend visibility. You can easily search for products, compare prices from different sellers, and take advantage of business-only pricing and discounts. Furthermore, the app allows you to set up purchasing policies to ensure compliance and control spending. With Amazon Business, you can also integrate with your existing accounting and procurement systems for a seamless workflow. The mobile app extends these capabilities to your iOS device, allowing you to manage your business purchases from anywhere.