I was over a relative's house and they had the TV on. Saw my first ever TV ad for a smartphone app to detect heart problems (arrythmias and such I guess).

The apps do seem to have been around for a few years, but I'd never seen an ad for one before.

To be fair, the only TV I own is hooked up as just essentially a screen to play the occasional movie, so I don't ever see TV commercials unless it's someplace away from home. So I don't really know how long this stuff's been advertised, and maybe I just missed it. Still, first I'd seen of it.