To use these add-ons, you'll need to download Firefox.

Log in
Add-on icon

Reviews for Spine Align

Spine Align by Vincent

5 Stars out of 5
5
5
4
0
3
0
2
0
1
0
Review by Masen
by Masen, a year ago
Blurring the screen when you slouch is a very non-intrusive and noticeable way of reminding you to correct your posture
5 reviews