You might want to craft a bow and arrow, because that really does help if you are okay with blowing up a bit of land. Also, in the version I play, if you hit it without it reaching you, you should be safe. Hope this helped.
There aren't "ancient creepers" in the application version of Minecraft, there are creepers.
It's called Minecraft... creepers have ALWAYS been in Minecraft.
No, Creepers just flee from them.
Yes, creepers were an error, they messed up a pig...
Yes
No hostile mobs (including creepers) are present in peaceful difficulty.
Nothing.
Yes
They explode once they sees you.
Kill Creepers.
Yes, they will explode.
Yes