Which of the following does NOT improve mobile app performance in Mendix?

Using data grids in Mendix does not inherently improve mobile app performance. Data grids are used to display large sets of data in a structured format, which can consume significant resources, especially on mobile devices with limited processing power and memory. While data grids are useful for organizing and presenting data, they can lead to performance issues if the data set is large or if they require frequent updates.

In contrast, optimizing images, minimizing API calls, and utilizing caching are all strategies that directly enhance mobile app performance. Optimizing images reduces the file size and load times, making them quicker to display. Minimizing API calls limits the amount of data that needs to be transmitted over the network, thereby enhancing responsiveness and reducing latency. Caching helps by storing frequently accessed data locally, which decreases the need for repeated data retrieval from the server, resulting in faster access for the user.