Casely Coupon: 50% Off Your First Month! Last updated by Hello Subscription on April 8, 2017. Subscription Box Coupons & Deals / Casely Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification For a limited time when you check out Casely you’ll receive 50% off your first month – just use coupon code HELLO50! Currently cases are available for iPhone 6/6+ and iPhone 7/7+. Check out our Casely review for more details!