Been directed here by @rocket_scienceitisnot, previously posted in the Lab ( Post) but they told me it would be better here.
Essentially I believe there should be a fix to update the mobile app to match the website view of lab ideas. Currently on the web voting looks like this:
Whereas on the app it looks like this:
Interestingly this has changed already since I submitted the lab idea, the hearts have gone but there's still no indication whether or not blue/pink are positive or negative.
Edit (02/01/17) the lack of heart's on the images above seem to be because it's my own idea. The point about the hearts not being clear, the colours and no labelling on the mobile view is valid, as described in the Lab post.