1. Pricing: Bubble offers a free plan with limitations on functionality and branding, while Google Sites is completely free to use with no limitations. However, Bubble provides more advanced features in its paid plans compared to Google Sites.
2. Customization: Bubble allows for extensive customization through coding and integration with third-party tools, giving users more control over the design and functionality of their websites. In contrast, Google Sites offers limited customization options, mainly focusing on predefined templates and simple drag-and-drop features.
3. Hosting: Bubble requires users to host their websites on dedicated servers, providing more flexibility and control over performance optimization. On the other hand, Google Sites hosts websites on Google's servers, which may limit customization options and scalability for larger projects.
4. E-commerce Capabilities: Bubble offers built-in features for creating complex e-commerce platforms with payment processing, inventory management, and customer portals. In comparison, Google Sites lacks advanced e-commerce capabilities, making it more suitable for basic informational websites rather than online stores.
5. Collaboration Tools: Google Sites integrates seamlessly with other Google Workspace applications, facilitating collaboration among team members through real-time editing and commenting. While Bubble allows for team collaboration, it may require additional tools or integrations to achieve the same level of efficiency as Google Sites.
6. Mobile Responsiveness: Bubble automatically generates responsive designs for websites, ensuring optimal viewing experiences on various devices. Google Sites also provides mobile responsiveness, but the customization options may be more limited compared to Bubble's flexible design capabilities.

In Summary, Bubble offers more advanced customization and functionality options with paid plans, while Google Sites is a user-friendly and free platform with basic features mainly suited for informational websites.