1. Automation: These apps automate many of the manual processes of managing your inventory, such as tracking stock levels, reordering products, and processing orders. This saves time and reduces the risk of errors.
2. Real-time Inventory Visibility: These apps provide real-time visibility into your inventory levels, allowing you to quickly identify which products are running low and need to be reordered. This helps to avoid stockouts, which can lead to lost sales and negatively impact your customer satisfaction.
3. Better forecasting: These apps also allow you to forecast your demand and plan accordingly, so you can predict sales patterns and adjust inventory accordingly.
4. Order Fulfillment: An inventory and order management app integrates with your Amazon account, allowing you to manage your orders in one place and streamline the fulfillment process.
5. Multi-channel integration: Some of these apps also integrate with other sales channels like your website, other marketplaces and retail stores, allowing you to manage your inventory and orders in one place, even if you sell across multiple platforms.
6. Better cost management: With better inventory tracking and forecasting, you can reduce carrying costs and avoid overstocking, which can improve your profit margins.
7. Increased efficiency: With all the information in one place, you can easily track the performance of your products, and make informed decisions about which products to continue to stock and which to discontinue.

Overall, inventory and order management apps can be a valuable tool for Amazon sellers, providing the ability to automate and streamline many of the processes involved in managing an e-commerce business, which can lead to increased efficiency, improved customer satisfaction, and increased profitability.