1. Customization Options: AppMySite offers extensive customization options for mobile apps, allowing users to tailor the app's design, layout, colors, fonts, and more to match their brand identity seamlessly. On the other hand, Bubble primarily focuses on web application development and offers limited customization options for mobile apps.

2. Automated App Building: AppMySite provides automated app building tools that enable users to create mobile apps quickly without any coding skills. In contrast, Bubble requires users to have some level of coding knowledge to build mobile apps, making it less accessible for beginners.

3. E-commerce Integration: AppMySite specializes in e-commerce app development and offers robust features for creating online stores, integrating payment gateways, managing product catalogs, and more. Bubble, on the other hand, is more versatile in terms of application development but lacks the specific e-commerce features provided by AppMySite.

4. Native App Performance: AppMySite generates native mobile apps that deliver optimal performance, speed, and user experience on both Android and iOS platforms. In comparison, Bubble's web-based approach may result in slightly slower performance and limited access to device-specific features available in native apps.

5. Support and Maintenance: AppMySite provides dedicated support and regular updates to ensure the smooth functioning of mobile apps and address any technical issues promptly. Bubble also offers support but may not be as specialized in mobile app development as AppMySite, potentially leading to longer resolution times for app-related problems.

6. Pricing Structure: AppMySite offers transparent pricing plans with clear features and limitations, making it easy for users to choose the most suitable option for their needs. Bubble's pricing structure can be more complex, with additional costs for advanced features or higher usage levels, which may require users to carefully review and understand their payment options.

In Summary, when comparing AppMySite and Bubble, key differences include customization options, automated app building, e-commerce integration, native app performance, support and maintenance, and pricing structure.