This actually smells like a marketing post to me. Get some interest, then a few days from now post a followup with a link to demo video, name of app, and bam, instant interest from the HN community. I really don't see what the problem is.

It only happens on older devices [edit: or at least it only came to your attention after testing on older devices]. Many of the people who actually download apps have tend to update their devices regularly [edit: and thus are less likely to immediately see a problem]. And the update is imminent. No problem here.