The second photo shows nothing at all.
In the first shot, well the "shield" in the left-hand icon might suggest a security app, but it also reminds me of a US highway sign (which might make sense of the background detail behind it), so I can't rule out some driving/navigation app.
There's something vaguely book-like about the right-hand icon.
The problem with this is that there are literally millions of apps, so asking anyone other than the person whose device they are on what they are is generally a long shot.