Ionic and Meteor are two popular frameworks used for developing web and mobile applications. While they have some similarities, there are key differences between the two.

1. Development Language: Ionic is built using Angular, a popular JavaScript framework, and uses HTML, CSS, and TypeScript for application development. On the other hand, Meteor is built using JavaScript and uses its own live update system.

2. Scalability and Data Syncing: Ionic is primarily used for developing frontend applications and requires integration with a backend server for database operations and syncing data. Meteor, on the other hand, is a full-stack framework that handles the frontend, backend, and database synchronization out of the box. It provides real-time data syncing across multiple clients by default.

3. Package Ecosystem: Ionic utilizes the vast ecosystem of Angular and npm to provide a wide range of plugins and modules for development. Meteor, on the other hand, has its own package system called Atmosphere, which offers a variety of packages specifically built for Meteor applications.

4. Development Workflow: Ionic follows a build and deploy workflow whereby developers write code in their preferred editor and compile and deploy the app through the CLI. Meteor, on the other hand, follows a more integrated and seamless workflow, allowing developers to make changes to the code and instantly see the updates in the app without needing to recompile or redeploy.

5. Learning Curve: Ionic is relatively easier to learn for developers already familiar with web development, especially those experienced in Angular. Meteor, on the other hand, has a steeper learning curve due to its unique features and functionalities, including the data synchronization system and integrated development workflow.

6. Community Support: Ionic has a large and active community of developers who contribute to the framework and provide support through forums and online resources. Meteor also has a supportive community but is relatively smaller compared to Ionic.

In summary, Ionic is an Angular-based framework focusing on frontend development with support for integration with backend servers, while Meteor is a full-stack framework that handles frontend, backend, and database synchronization out of the box with its own package system and development workflow. They differ in terms of their development language, scalability, package ecosystem, development workflow, learning curve, and community support.