発語メモ is a lifestyle application designed for Android that helps parents document their child's language acquisition process. Users can record when their baby or toddler speaks specific words, track the changes in their speech over time, and celebrate their milestones. The app features a calendar interface where parents can tap on dates to log spoken words, making it easy to visualize a child's progress at a glance.

In addition to calendar tracking, the app offers list and graph displays to show the evolution of a child's vocabulary. Users can see how words develop, such as the transition from 'ba' to 'banana'. The line graph feature allows parents to monitor the increase in spoken words, providing a visual representation of their child's language growth. Overall, this application serves as a valuable tool for parents looking to engage with and support their child's linguistic development.