The goal of this trial is to test a newly developed carbohydrate counting mobile application (named Petit Cactus) with photo recognition, for people with type 1 diabetes. To evaluate Petit Cactus, our objectives are: 1. To measure the association between app engagement and changes in blood glucose management over the same period. 2. To assess the usability of the app, focusing on engagement (i.e., frequency of meal logs) over 3 months and user satisfaction. 3. To validate the nutritional data obtained from the app's photo recognition algorithm by comparing it with a validated nutrient intake method (in this case, a web-based 24h recall). Participants will submit their Ambulatory Glucose Profile (i.e., CGM data) at the beginning and at the end of 3 months, download the app to use for carbohydrate counting for the 3-month duration, complete a usability questionnaire at the end of 3 months, and complete an end-of-study interview to report on their satisfaction with the app.
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Time-in-Range
Timeframe: At baseline and 3 months
Estimated A1c
Timeframe: At baseline and at 3 months
Engagement
Timeframe: Throughout the 3 months
System Usability System Scale
Timeframe: At 3 months
Usability perception and experiences themes
Timeframe: At 3 months