KATARU｜AIラジオ

■ What is KATARU?

"Edo period food culture," "quantum mechanics," "dinosaur ecology"—simply enter a single word about a topic that interests you, and the AI ​​will continue to talk about it unilaterally, like a radio program.

No conversation required. No selection required. It just flows.

■ How to use it is simple

① Enter a single word about a topic
② The AI ​​automatically generates a script
③ The audio continues to play one after another

That's all.

■ Three unique features of KATARU

【The story never ends】
Regular podcasts are finite. KATARU generates the next chapter instantly after each chapter ends. Even if you continue listening to the same topic, the AI ​​will continue to talk about it from a new perspective each time.

【Choose your favorite topic】
Space, history, science, culture, philosophy, cooking—
Even with specific topics like "Edo-era Edoite breakfast,"
the AI ​​will talk in depth.

【No conversation required, one-sided storytelling】
Unlike AI chats where you ask questions and get answers,
KATARU continues to talk unilaterally.

While cooking, commuting, or before bed—
You don't even need to look at the screen; just listen.

■ Customize your program with voice and background music

An AI personality narrates while soothing background music plays.

With Premium, you can choose your preferred narration voice (4 male/female options) and background music (4 options + volume adjustment).

■ Automatic Selection Feature

When you can't decide what to listen to today, use the "Automatic Selection" feature.

The AI ​​automatically selects a theme based on the time of day.

Quiet philosophical themes in the evening, energetic trivia in the morning—
The perfect theme for you will play.

■ Pricing Plans

・Free Plan: Enjoy up to 30 minutes per day
・Premium (¥480/month / ¥3,800/year):
Unlimited playback + voice and background music switching and volume adjustment

■ Recommended for:

・Those who love reading but don't have much time
・Those who like podcasts but can't find a topic they want to listen to
・Those who want to spend intellectual time during their commute, housework, or exercise
・Those who are curious and interested in many things
・Those who enjoy the experience of being spoken to directly, like on a late-night radio show

■ Terms of Use

The program scripts are automatically generated by AI. Historical information, facts, and the latest information may not be accurate.
Please enjoy it as a way to stimulate your intellectual curiosity.

We do not collect personally identifiable information.
For more details, please see the app's privacy policy.