Building a mobile banking app that delivers real-time account information requires technical precision and skill, as it involves consolidating data from multiple distinct products into a single dashboard. To solve load latency issues, developers can use tools to prefetch account balances and recent transactions, or run summary queries against second servers to avoid direct user load impact. Choosing the right data sources is also crucial, with factors such as accuracy, reliability, and relevance to consider. Additionally, optimizing performance by caching data on devices, ensuring a good user interface that accommodates multiple data inputs and display formats, thoroughly testing apps before release, creating a data dictionary to track data sources and fields, validating data quality, and planning for scalability and flexibility in data integration are all essential tips for developers working on financial applications.