Oh yeah, I think my friend was asking for this feature also

This would be awesome

Not sure if it was there all along, but I found that if you do the following:

• Tap the Account button (bottom right of the main screen)
• Tap the gear icon in the top right
• Tap "Accounts"
• Finally select the account in question

There is an option to show/hide NSFW posts, but it does not seem to hide them when turned off.

Apollo inherited these settings from the account itself.