The cost to develop a video editing app similar to GoPro Quik can vary significantly depending on several factors. Key considerations include the complexity of features, platform compatibility (iOS, Android, or both), design intricacy, and the development team's location and expertise. A basic version of such an app might cost around $20,000 to $50,000, while a more feature-rich and polished version could require an investment ranging from $100,000 to $300,000 or more. It's crucial to budget for ongoing maintenance and updates as well. Ultimately, the final cost will be influenced by the specific requirements and goals of your project.