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Studio-quality podcasts,
without the studio.

Turn articles into podcastsCreate kids story showsLaunch a meditation seriesAutomate your newsroomBuild science explainers

Pick a template, choose your voices, generate a script, and distribute to Spotify, Apple Podcasts, and Amazon Music — all from one platform. No microphone needed.

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Episode Creator
Science for Kids
A curious kid and a smart friend explore science one question at a time.
TemplatePersonasScriptMixPublish
Auto-preview: on
Personas
Zach Brennan
Zach Brennan
Questioner
Voice
Sandra Liu
Sandra Liu
Explainer
Voice
Personas and roles are prefilled by templates—override anytime.
Script preview
Conversation
Zach Brennan: Hey there, scientists! Ready to find out something amazing? Let's go!
Sandra Liu: I am so ready! And today we've got a great one. Have you ever wondered why the sky is blue?
Zach Brennan: Ooh, easy! It's blue because it's reflecting the ocean! All that water makes it blue, right?
Mix
Template sound preset
Background9%
Hyperfun
Transition35%
Spazzmatica Polka (sting)
Publish via Castos RSS → Spotify, Apple, Amazon, and more.

Four steps. Studio-quality podcasts.

No audio engineering skills needed. Pick, customize, review, and ship.

1

Pick a template

News, storytelling, meditation, sports — choose the right format.

2

Choose your voices

Select from 73 built-in voices or create custom personas.

3

Review the script

AI generates the script. You edit, approve, and fine-tune.

4

Distribute everywhere

Generate an RSS feed and submit to Spotify, Apple Podcasts, Amazon Music, and more.

Templates for every format.

News, storytelling, meditation, kids, science — pick a format and start creating.

Science for Kids

A curious kid and a smart friend explore science one question at a time.

Zach Brennan
Sandra Liu
Zach Brennan & Sandra Liu

Audio Drama

Scripted fiction with distinct character voices — radio theater for the modern ear.

Rachel Sinclair
Mia Torres
Rachel Sinclair & Mia Torres

Sleep Stories

Ultra-calming 20-30 minute narrations designed to put you to sleep.

Sandra Liu
Sandra Liu

The Culture Drop

Hilarious pop culture commentary with quick wit and genuine laughs.

Zach Brennan
Destiny Monroe
Zach Brennan & Destiny Monroe

Meet your podcast hosts

Each persona is a fully crafted character with a unique voice, personality, and style. Use them out of the box or customize your own.

Alex Rivera

Alex Rivera

News Anchor

Balanced and versatile news anchor. Adapts seamlessly between hard news and lighter stories. Dependable voice for any newsroom format.

VersatileBalancedAdaptable
Best for
Mixed-format showsGeneral hostingVariety podcasts

45 ready-to-use personas — tap any to preview

Hear the difference

Sample episodes that reflect the templates and sound presets.

Science for Kids

A curious kid and a smart friend explore science one question at a time.

3:29

Distribute to all major platforms via RSS

Spotify
Apple Podcasts
Amazon Music
YouTube Music
RSS (Castos)
Spotify
Apple Podcasts
Amazon Music
YouTube Music
RSS (Castos)
0+

Episodes generated

0+

Creators & newsrooms

0+

Voice personas

“We went from zero podcasts to a daily news edition in under a week. The templates and automation are incredible.”

Sarah Chen

Editor-in-Chief, The Metro Voice

“I'm a solo creator and this lets me produce studio-quality episodes that sound like I have a full production team.”

Marcus Rivera

Independent podcaster

“The multi-anchor feature is a game changer. Our science explainer series sounds genuinely conversational.”

Dr. Priya Sharma

Science educator & host

Start creating for free

No credit card required. Get 30 minutes of audio free every month on the Spark plan.

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