To test accuracy of due date for delivery baby, result from Z-Baby has been compared with the calculation from website BabyCenter [19]. Z-Baby shows more details than the BabyCenter. For weight gain during pregnancy, Z-Baby has been compared with the website Web Pregnancy Weight Gain Calculator (PWGC) [20] based on the same conditions such as pregnancy week, weight and height. The result shows that PWGC provides weight range that covers the value calculated from Z-Baby. Calorie required during pregnancy, which calculated by Z-Baby has been compared to the website Calorie Needs and Pregnancy (PCIC) [21]. The result shows similar for the same conditions such as different age, weight, height, age pregnant. However, the calorie per day calculated by Z-Baby is slightly lower than PCIC due to the fact that the Normal exercise level in Z-Baby is equivalent to Little/No exercise by PCIC.