The increasing reliance on mobile applications for daily productivity has led to the widespread use of separate tools for task management, skill development, and financial tracking. Although effective individually, these isolated solutions create fragmented workflows and require users to manage multiple applications, resulting in reduced efficiency and higher cognitive effort. To overcome these limitations, this paper presents TaSkiFi, a unified cloud-first mobile application that integrates task scheduling, skill progression monitoring, and personal finance management into a single system. TaSkiFi leverages Firebase Authentication to ensure secure and personalized access, while Cloud Firestore provides scalable, real-time data storage with multi-device synchronization. The system is built using a modular Model–View–ViewModel (MVVM) architecture, enabling clean separation of concerns, maintainability, and responsive user interactions. Experimental evaluation demonstrates that the cloud-centric design significantly enhances data consistency, reduces manual overhead, and improves user experience by enabling seamless transitions across productivity domains. The study highlights the potential of cloud-integrated mobile applications to streamline personal information management and support more cohesive digital productivity ecosystems.