1. What is the general goal of the feature?
To improve responsiveness of study participants using ODK-Collect to report daily or weekly activities
2. What are some example use cases for this feature?
Participants in a prospective study on health practices and outcomes will be asked to fill a survey either daily or weekly. This features will point out to them how well they are doing, by telling them how well they are doing so far (this is similar to the streak feature used in Duolingo).
3. What can you contribute to making this feature a reality?
I can help with interface design and testing, and test in the field on participants in my studies. I can report back whether this feature is increasing response rates. I am not a programmer, and even less a Java programmer, so I can't help you there