Why Immuny exists

She has lived with allergies her whole life

Mackenzie Dennill grew up with allergies. About seven years ago a Lone Star tick bit her and left her with Alpha-gal syndrome, which turned beef and a lengthening list of other foods into a problem. During COVID she went into anaphylactic shock, could not breathe or see, and thought she had the virus. It was her allergies.

Then she had a daughter

When her daughter was around six months old and ready for solids, Mackenzie asked an allergist to check her. The allergist said the better option at that age was to introduce the foods at home and watch what happened. Driving 45 minutes across Los Angeles with a baby, around naps and feeds, was not something she could keep doing.

The notes app did not hold

She tracked it at home instead, on her phone. Banana one day, peanut butter the next, then the days blurred and she could not remember which food she had given or when. She was already paying for sleep and feeding apps for her daughter while keeping her own allergy history in her head.

What she heard from other parents

Immuny started at Origin Weekend, a USC hackathon, in August 2025, while Mackenzie was in the Marshall MSSE program. Through I-Corps interviews she talked with about 40 parents, and the same story came back. Introducing foods is stressful, and the record-keeping falls apart.

What Immuny is

She is building the thing she wanted: a simple way to track first foods and follow the top 9 allergens, with a clear record you can share with your allergist. It organizes what you logged. It does not diagnose, and it does not replace your doctor. Mackenzie is firm on that part. She wants an allergist reading the record.