Big data is having a significant impact on mobile app development in several ways:

1. Personalization: Big data helps mobile app developers to collect and analyze user data, which enables them to create personalized experiences for each user.
2. Improved user experience: By analyzing big data, developers can gain insights into user behavior, which can be used to optimize the user interface, improve performance, and fix bugs.
3. Enhanced app functionality: With big data analytics, developers can identify the features most commonly used by users and prioritize the development of those features.
4. Real-time analytics: Big data analytics can provide real-time insights, enabling developers to respond to user needs and feedback quickly.
5. App marketing: Big data can help app developers to identify the most effective marketing channels and strategies to reach their target audience.