SONIC Drive-In restaurants will give you a free medium slush when you download the SONIC App for iOS or Android and create a free account.
The SONIC App helps you get rewards, find locations, pay with your phone, send gift cards to friends, and more.
Plus, you can get a free medium slush when you download the SONIC App and create an account.
SONIC has tons of delicious slushes, including their Candy Slushes, Real Fruit Slushes, and Famous Slushes, which are perfect for a hot summer day.
If you get a couple of friends and family members together, you can all download the app and get a round of free slushes on the house.
How To Get Free Medium Slush from SONIC Drive-In
1. Just Download the free SONIC App to take advantage of this offer.
2. After you download the SONIC App and create your account, you should instantly receive the offer for a free medium slush.
3. You simply click on the “Redeem” button and then show the in-app coupon at your local SONIC Drive-In location.
This offer is currently appearing on the sonicdrivein.com homepage, and there is no indication how long this offer will be available.
It’s free to download the SONIC App, and it’s available for both iOS and Android.
You can also get a Free Birthday Treat from SONIC when you join the My SONIC club, plus get access to other special offers and SONIC coupons.