To check if you have any 32-Bit apps installed go to Settings -> General -> About
And if you can click on Applications, it'll show you a list of them. If you can't click it, then you have none.
Mine is unclikable, but I assume it's irrelevant because I'm on an iPhone 5 and unable to update.
Still, it should probably be there for people who are in the market to get a new phone, knowing which apps won't work on the new phone.
Ah well. End of an era. My first iPhone was the 3G and I made a leap to the iPhone 5 with the first bigger screen after 4 years. Today's the day I start dropping into obsoletion for my phone (I'm still on el captain on my mac).
I would say it's time now to upgrade my phone, but honestly I really like ios10 where it is. I may see ignorant I can hold on a bit longer. The iPhone X is the most appealing to me but im still not ready lol
Oh, for the record my watch is saysbup to date on 3.2.3. Glad it recognises I'm still on ios10 and doesn't bug me to update.