Tracy was a mobile app designed to help users quickly detect allergens while in the supermarket. The app would scan the barcode of a product and display any allergens present in the ingredients.

Tracy was built using React Native with Expo. I used Async Storage to locally store the user's allergen preferences and the barcode scanner was implemented using the Expo Barcode Scanner API.

I used the Open Food Facts API to retrieve product information and allergen data. The app would then compare the user's allergen preferences with the product's ingredients to determine if it was safe to consume.

External APIs:
• Open Food Facts API - Provides product information and allergen data

I decided to discontinue Tracy due to the complexity of maintaining the allergen database. The app relied on accurate and up-to-date allergen information to ensure user safety, which was challenging to maintain without a dedicated team.

Tracy made it to TestFlight and was tested by a small group of users, but ultimately, never made it to the App Store.