Date calculation, immunization management, certificate management
We calculate date from birth day and manage vaccination and various certificates.

It tells you how many days or months your baby was born.
You can register (add) several children.
You can list the vaccinations and record your child's vaccination status.
You can manage your child's certificate for benefits at various institutions, amusement parks, etc.
It provides backup and restore capabilities so that data can be restored to a specific point in time.

We will add more functions later to provide more services.