행복저금통, translated as "Happy Piggy Bank," is a lifestyle app designed for iPhone users. Developed by Sun Kyung Kim, this free app allows users to record and save their moments of happiness.

With 행복저금통, you can record one happy moment each day. Don't worry if you miss a day, as you can still go back and fill in the missing dates. The app also allows you to view your saved notes when the piggy bank opens. It's important to note that once you save a note, you cannot edit or delete its content.

In addition to recording happiness, 행복저금통 also lets you save your happy moments for longer periods of time. You can choose to save happiness for a week, a month, three months, six months, or a year. Once the specified time has passed, you can revisit your saved moments. The app conveniently displays all opened piggy banks in the list tab.

The unique feature of this app is that the notes you've saved will move freely within the piggy bank when you move the screen, adding a playful touch to your happiness collection.

Overall, 행복저금통 is a user-friendly and engaging lifestyle app that allows users to record and save their moments of happiness. It's a great way to reflect on joyful experiences and create a digital piggy bank of happiness.