Hi Mariela - the CHI conferences have featured lots of digital diary type tools through the years if you're looking for an academic perspective.

A colleague of mine here at Northumbria, who is now at Leeds University, [https://www.researchgate.net/profile/Rafiq-Elmansy] developed a framework a couple of years ago for designing-for-better-adherence, for medical product/device development in particular - you can find it online if you look up adherencecanvas.com.

In the UK I have worked with a few companies in the mobility/rehab area - there is a small startup working on bluetooth connected rehab devices airehab (AI Rehab) which might also be very relevant to your question.

I hope that's helpful :-)

Matt

Thanks! Will look into the suggested resources! Mariela.