The primary difference between B2B and B2C apps is the customer and business relationship.
With a B2B app, the customer is typically a business (or group of companies) that purchases a product or service from the app developer. In contrast, with a B2C app, the customer is typically an individual who purchases a product or service for personal use.
B2B apps are often focused on providing complex or specialized products or services, while B2C apps are often concentrated on giving simple products or services that are more widely used.