Please assess the completion status of the following clinical trial:

Trial Title: Assessing the Effectiveness of an N-of-1 Platform Using Study of Cognitive Enhancers

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: DEVICE_FEASIBILITY
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* US resident~* 18 years old or over~* Has an iPhone~* Regular caffeine drinker~Exclusion Criteria:~* Pregnant/breastfeeding~* Any contraindication/health issue in which risk is added by consumption of caffeine

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: t

Study Arms:
- Single caffeinated beverage/supplement (Type: ACTIVE_COMPARATOR): None
- Combination caffeine and L-theanine (Type: ACTIVE_COMPARATOR): None

Based on this trial design, predict the completion outcome and termination type (if applicable).