Apps people love to use.

Hieun is an independent app studio in South Korea, building focused iPhone apps people keep coming back to.

We build small things well. Every app starts with one job, gets the details right, and stays useful long after the first week.

Products

AI goal planner and tracker

Turn a goal into small steps you can take today. A short conversation becomes a plan with milestones and daily actions.

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AI goal coach

Vague wishes become goals you can actually reach, with small daily wins that keep you going.

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Soundscapes tuned to your type

Pick your MBTI type and get a personal mix for deep focus, better sleep, and quiet meditation.

View on the App Store

Hieun is a small, independent studio. We ship our own apps, support them ourselves, and keep them simple.