1. To evaluate the usability and user experience of the i-PregMom mobile application and digital dietary image recording among pregnant women.
2. To examine the effectiveness of digital mobile health interventions on blood glucose levels and gestational weight gain among pregnant women from 10-14 weeks to 24-28 weeks of gestation.

1. Sociodemographic variables: age, education level, marital status, occupation, and socioeconomic status.
2. Obstetric variables: gravidity, history of miscarriage, pregnancy complications, and mode of delivery.
3. Pre-pregnancy BMI.
4. Dietary habits, perceived healthy eating behaviors, and dietary patterns.
5. Psychological distress and depressive symptoms.
6. Gestational blood glucose levels and GWG

Inclusion Criteria:

• Primiparous women aged ≥18 years.

Singleton pregnancy.

Pregnant women between 10 and 14 weeks of gestation, with gestational age calculated based on the first day of the last menstrual period.

Able to listen, speak, read, and write in Chinese.

Willing to provide prenatal weight and blood glucose data.

Possess a mobile communication device (such as a smartphone or social media account) and be able to receive emails.

Exclusion Criteria:

• Engaged in weight loss activities prior to pregnancy.

Diagnosed with chronic illnesses that may affect weight changes (e.g., psychiatric disorders, thyroid diseases).

The data will be anonymized and used solely for analysis in preparation for publication; it will not be shared."