29 reviews
  • Doesn't work on messenger.com
  • So far so good, nice work :)
  • Works
  • Good
  • On my Android 8.0 I can't tell the difference if it's activated or not by looking at the Firefox menu. There's a "Facebook™ Seen Blocker" but nothing is indicating the status.
  • does what it says
  • Nice
  • good
  • I'm not sure if this works or not, but Zemana AntiMalware shows it as a "harmful object," so I'm getting rid of it.
  • It also gives me a sick thrill to know I've read a message on FB without the sender seeing I have. >:)
  • Working Perfectly.
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