About Rainku

Rainku is an AI journal app.

It combines three ingredients:

• Rain ambience — a live rain curtain and ambient audio, designed as the entry ritual
• AI-guided conversation — an AI companion for when you don't know what to write
• Photo + text poster generator — turns journal entries into shareable visuals

Rainku is designed for people at life-transition moments — career pivot, breakup, postpartum, gap year, expat, post-illness recovery — who want to journal but haven't started.

For the day you realized your life is worth writing down.

Rainku was founded in 2026 by independent developer Ezra Li.