Hemophilia Mobile App Usability Pilot

HITLAB will conduct a segmented rapid user acceptance study ("rapid UX study") of a smart
phone app and an actigraphy device with a connected scale. During the first segment, of one
month's duration, subjects will use the app, actigraphy device, and scale. Next, over an
interphase period of up to 6 weeks, subjects will only use the app. During this time, the app
will be modified based on data collected during the first segment. Finally, during the second
period, also of one month's duration, subjects will use the modified app, actigraphy device,
and scale.

Inclusion Criteria:

1. You own an iPhone or a Samsung (S5 or higher) smartphone

2. Your age is between 18 and 63 years

3. You reside in the New York metropolitan area

4. You are able to read, write, and speak English

5. You have participated in a concluded clinical trial in the past two years

Exclusion Criteria:

1. You do not own an iPhone or a Samsung (S5 or higher) smartphone

2. Your age is not between 18 and 63 years

3. You do not reside in the New York metropolitan area

4. You are not able to read, write, and speak English

5. You have not participated in a concluded clinical trial in the past two years