This test is for you if
- you live in the St. Louis area;
- you do most of your household's grocery shopping;
- you shop in store and take the paper receipt;
- you have an iPhone (the first test is on iPhone only);
- you are 18 or older.
With an Android phone you can still sign up: we will keep you on the list, and write to you if and when the app is ready for your phone.
Places are limited and we are inviting people in small groups. We will email you either way.