DOSELF is an iOS watch-only app and has (1) a reflection survey module and (2) a health and fitness data share module.
Once the app is downloaded/installed, you will be asekd to agree to allow notifications for physical activity reflection survey delivery. To receive notifications for reflection surveys, you need to "Allow" notifications.
Next, you will see the app's main interface, that has an "User ID" field at the top of the screen, and an "Upload Data" button at the bottom of the screen. By tapping the User ID field, you can choose your own user ID, that can be any length and combination of characters, numbers, symbols and emojis. The User ID will be later linked to and used to de-identify your health/fitness data, if you choose to share the data with the developer of DOSELF to personalize the number of daily reflection survey notifications, according to your previous day total step counts.
When you first tap the "Upload Data" button, you will be asked whether you would like to allow read and write access to your health/fitness data. Sharing health/fitness data is completely voluntary and no personally identifiable information is collected. No third party is involved in data collection or sharing.
Reflection surveys are initially delivered 6 times a day with 2-hour intervals from 8 am to 8 pm; and each reflection survey has one question asking about your past two-hour physical activity (e.g., In the past 2 hours, how many minutes did you spend on exercising?). By responding to this survey, you have a chance to reflect on your physical activity level. If you took more than 10,000 steps in the previous day, you receive one less number of reflection surveys today. If you take less tha 10,000 steps today, you will receive one more reflection surveys tomorrow. That is, the number of surveys change according to your previous total step counts. The minimum number of surveys you can receive throughout the day is 3, and the maximum number of surveys you can receive is 6. If no health/fitness data is shared, or if the number of possible survey is less than the minimum or larger than the maximum, the number of daily surveys stays the same as the previously set number.
In the attached video below, you can see how the reflection survey is delivered in a notification and shown in the watch device.
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