Please assess the completion status of the following clinical trial:

Trial Title: A Smartphone App to Improve Physical Activity

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: FACTORIAL
- Observational Model: None
- Primary Purpose: OTHER
- Time Perspective: None
- Masking: DOUBLE
- Phase: None
- Number of Arms: 8.0

Eligibility Criteria:
Inclusion Criteria:~* 65-84 years old~* English speaking~* reside in Los Angeles~* score ≥5 on a 6-item cognitive screener~* report \<150 minutes of moderate to vigorous PA/week as per a single-item screener~* ambulatory~* able to safely participate in physical activity as determined by the Revised Physical Activity Readiness Questionnaire (rPARQ) or proof of medical clearance from a physician~* smartphone owner for ≥3 months~* observed ability to reliably access and operate a smartphone during orientation.~Exclusion Criteria:~* ≥85 years old, based on limited smartphone ownership and to reduce sample variability

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: 84 Years
- Healthy Volunteers: t

Study Arms:
- PA App+ On Your Feet+ CoachMe+ Proof Pos (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app in conjunction with the following 3 features: (1) On Your Feet (sedentary activity monitoring with motivational messaging and peer suggestions); (2) Coach Me (tailored messaging to increase the intensity level of everyday activities and overcome barriers); and (3) Proof Positive (explicit and implicit messaging to promote positive aging views).
- PA App + On Your Feet + Coach Me (Type: OTHER): Participants in this arm will use a basic physical activity (PA) app in conjunction with the following 2 features: (1) On Your Feet (sedentary activity monitoring with motivational messaging and peer suggestions); and (2) Coach Me (tailored messaging to increase the intensity level of everyday activities and overcome barriers).
- PA App + On Your Feet + Proof Positive (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app in conjunction with the following 2 features: (1) On Your Feet (sedentary activity monitoring with motivational messaging and peer suggestions); and (2) Proof Positive (explicit and implicit messaging to promote positive aging views).
- PA App + On Your Feet (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app in conjunction with the following feature: (1) On Your Feet (sedentary activity monitoring with motivational messaging and peer suggestions).
- PA App + Coach Me + Proof Positive (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app in conjunction with the following 2 features: (1) Coach Me (tailored messaging to increase the intensity level of everyday activities and overcome barriers); and (2) Proof Positive (explicit and implicit messaging to promote positive aging views).
- PA App + Coach Me (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app in conjunction with the following feature: (1) Coach Me (tailored messaging to increase the intensity level of everyday activities and overcome barriers).
- PA App + Proof Positive (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app in conjunction with the following feature: (1) Proof Positive (explicit and implicit messaging to promote positive aging views).
- PA App (Type: OTHER): Participants in this arm will use a basic physical activity (PA) tracker app without any additional features.

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