Ah then you’d still have the same connection, but with the Page reversed (do pages by Kid). Think you were on the right track with your lookup fields being the easiest method
If you want to create a page for each Source that lists all the related Kids, you’d want to have a Link to Record field that connected each Kid to a Source. Then, on your page (based on Source), you can insert a table with the related Kids
On iPhone, you just open the link to the form in Safari and click the share button on the bottom of the screen and select “Add to Home Screen”. I’m not exactly sure how to do it on android though
