The Internet of Things (IoT) allows various things like mobile devices and electronic appliances to communicate over network. Inter-device apps can share data between devices and dispatch specific tasks to other devices to utilize their resources. The prevalence of JavaScript web apps that can run anywhere providing any browsers opens the gate to unanticipated interactions between devices. However, the current techniques require developers construct tasks to dispatch statically with strong consistency, and they do not provide any disciplined way to develop inter-device apps. In this paper, we propose an innovative framework, IDTD (Inter-Device Task Dispatch), that supports developers to construct and dispatch tasks into multiple devices dynamically with eventual consistency in a systematic manner. We provide a high-level architecture of IDTD, formally prove that the framework guarantees soundness and eventual consistency, and present preliminary results showing its practical usability.