GoldenTime: Exploring System-Driven Timeboxing and Micro-Financial Incentives for Self-Regulated Phone Use

User-driven intervention tools such as self-tracking help users to self-regulate problematic smartphone usage. These tools basically assume active user engagement, but prior studies warned a lack of user engagement over time. This paper proposes GoldenTime, a mobile app that promotes self-regulated usage behavior via systemdriven proactive timeboxing and micro-fnancial incentives framed as gain or loss for behavioral reinforcement. We conducted a largescale user study (n = 210) to explore how our proactive timeboxing and micro-fnancial incentives infuence users' smartphone usage behaviors. Our fndings show that GoldenTime's timeboxing based micro-fnancial incentives are efective in self-regulating smartphone usage, and incentive framing has a signifcant impact on user behavior. We provide practical design guidelines for persuasive technology design related to promoting digital wellbeing.

• Human-centered computing → Empirical studies in HCI.