NO PURCHASE NECESSARY. Ibotta Semester of Savings Giveaway is open to legal residents of the 50 U.S. and DC, 18 yrs. and older. Void where prohibited. Giveaway begins 8/9/19 on or about 9:00 AM MST and ends on 8/11/19 at 11:59 PM MST. Official Rules. Giveaway is sponsored by Ibotta, Inc., 1801 California Street, Suite 400, Denver, CO 80202.