Slack is a great communication app for your business, whether you use the free version or one of the paid options. They have a lot in common, from similar chatting options and video/voice calling to file-sharing features. Both versions are also available on various devices, whether you're using a Windows laptop or one of our favorite phones. But the paid version shines in areas that might be crucial for your business. For example, it offers unlimited integrations with other tools, plus enhanced data protection and security. Weve tried Slack in its free and paid versions to help you decide which one is better for your business.