Thumb Score: +37 Starbucks is hosting their Starbucks Summer App-y Days and offering Starbucks Rewards Members [Free to Join]: Buy One, Get One Free on qualifying Starbucks Beverage/Drinks on May 29, 2024, from 12-6pm local time. Your loaded offer will be in the Starbucks App (apply it at checkout or ask your barista at time of purchase).