Tech finished install. Customer thrilled. No review ever asked.
Tech finished a $9K AC install. Homeowner thanked them profusely. Tech said "if you have a sec, we'd appreciate a review" — verbally, on their way out. Homeowner forgot by the time they walked back inside. Stack6 sends the SMS request 4 hours later with a one-tap Google link. The homeowner taps it from their couch.
Review velocity climbs from 2/mo to 14/mo. CTR on Local Pack listings up ~22% per Google studies.