This thesis addresses that gap by designing and evaluating a user-centered, phase-adaptive goal-attainment application.

Following a Design Science Research approach operationalised through Design Thinking, a functional prototype (KisoGoals) was built and evaluated with a small, purposively sampled group of young adults over two iterations, complemented by anexpert interview. The artifact detects whether a goal is in a starting, active, stalled or finalpush phase and adapts its coaching accordingly, while always offering the option to simplify the current step, and maintaining a deliberately calm, non-punitive experience.

Participants evaluated the prototype as desirable, useful and largely usable, valuing the non-punitive design in particular; their feedback drove iterative refinements to the core features. The work contributes a functional instantiation, a transferable phase-detection logic and five design principles for calm, phase-adaptive goal support. Its desirability is well supported and its core technically feasible, while long-term adherence effects and commercial viability remain open questions for future validation.