Background: The phenomenon of procrastination refers to an individual’s conscious decision to postpone the completion of
tasks despite being aware of its adverse consequences in the future. Extant research in this field shows that procrastination is
associated with increased levels of anxiety and stress and the likelihood of developing depression and calls for the development
of suitable interventions that support individuals in making lasting positive changes to their procrastination behaviors. In parallel,
practice has produced a plethora of behavior change support systems (BCSSs) that aim to provide a low-threshold, accessible
alternative to in-person therapeutic approaches. Most of these BCSSs can be considered motivational BCSSs that combine
functional, utilitarian components with hedonic and eudaimonic design elements to empower self-treatment. Although early
studies have suggested the potential benefits of such BCSSs, research on understanding their specific design characteristics and
support of individuals in self-treating procrastination is still in its infancy.

Objective: In response to this gap between practice and research, we aimed to analyze and systemize the multitude of practical
design efforts in motivational BCSSs for the self-treatment of procrastination and identify the main design archetypes that have
emerged.

Methods: We conducted a 3-step research approach. First, we identified 127 behavior change support apps for procrastination
through a systematic screening process in the German and US Apple App Store and Google Play Store. Second, we systematically
coded the identified apps in terms of the behavior change techniques targeted by their functional design and hedonic or eudaimonic
design elements. Third, we conducted a 2-step cluster analysis to identify archetypes of motivational design in behavior change
support apps to combat procrastination.

Results: A variety of motivational designs have been developed and implemented in practice, and our analysis identified five
main archetypes: (1) structured progress monitor, (2) self-improvement guide, (3) productivity adventure, (4) emotional wellness
coach, and (5) social focus companion. The identified archetypes target different psychological determinants of procrastination
and successfully use a variety of hedonic and eudaimonic design elements that extend beyond the current state of research.
Conclusions: The results of our study provide a foundation for future research endeavors that aim to examine the comparative
effects of motivational design archetypes and develop more effective interventions tailored to individual needs. For practitioners,
the findings reveal the contemporary design space of motivational BCSSs to support the self-treatment of procrastination and
may serve as blueprints that can guide the design of future systems. For individuals seeking support and health professionals treating procrastination, our study systemizes the landscape of apps, thereby facilitating the selection of one that best aligns with
the patient’s individual needs.