City problems occurred had driven government of Jakarta to collaborate with service provider in Indonesia to operate application-based Real-Time Aspiration Delivery System (RTADS) for people to report any issues around Jakarta. However, people’s participation in using this application is much lower than expected by the service provider. This research aims to analyze factors affecting technology adoption of RATDS, so strategies for increasing user of RATDS can be developed. The combination of Unified Theory of Acceptance and Use of Technology (UTAUT) and Task-Technology Fit (TTF) is used to be tested by structural equation modeling (SEM). Results show that performance expectancy, effort expectancy, social influence, and task-technology fit significantly affect user adoption of RATDS. Perceived usefulness and persuasion from others play a big role in user acquisition where they are categorized as early adopters. This indicates the performance of the application must be excellence and influence from other people or leadership must be well felt.