Bulu Box Promo: Get A Free STYR Fitness Tracker! Posted by Hello Subscription on April 27, 2018. Subscription Box Coupons & Deals / Bulu Box Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Bulu Box is giving a free STYR Fitness Tracker when you signup before 5/4! No coupon code needed – just use this link to subscribe. Here’s more info about the STYR Fitness Tracker: See all our Bulu Box Reviews to find out more about this health & supplement subscription box!