AI Podcasts - Castella
Docs, PDFs, Sites to Podcasts
Free · In‑App Purchases
Transform any content into podcasts with AI and enjoy listening effortlessly. Whether articles, books, or notes, experience your favorites in audio form.
Turn Any Content into an AI Podcast – In Seconds
Whether it’s an article, PDF, website, or your notes, create a high-quality podcast on any topic instantly.
Your Podcast, Your Way
Upload your content and bring it to life with natural AI narration. Choose from a range of voices for clarity and authenticity — ideal for any topic or mood.
Customize Every Detail
Choose the podcast language
Select a style: casual conversation, in-depth exploration, debate, or interview
Set your preferred length: from 5 minutes to an hour
Your Personal Podcast Library
Each podcast is stored in your library with titles, tags, transcripts, and the original content.
Powerful Listening Experience
Enjoy smooth playback with all essential features — speed control, skipping, downloading, and more. Designed for seamless listening.
Perfect for…
Learning on the go
Summarizing articles
Relaxing with mindfulness
Exploring new ideas
Creating unique audio content for your brand or audience
Start turning your ideas, documents, and inspirations into AI-generated podcasts with Castella.
Read Castella’s Privacy Policy and User Agreement:
Privacy Policy: https://kipachu.com/docs/castella/privacy
User Agreement: https://kipachu.com/docs/castella/terms
more Introducing enhanced audio for your listening pleasure. In this update, enjoy clearer and more immersive sound with improved speaker output, bringing out the best in every voice. We have also addressed several issues to enhance your overall experience.
1.6.0 Apr 6
Introducing enhanced audio for your listening pleasure. In this update, enjoy clearer and more immersive sound with improved speaker output, bringing out the best in every voice. We have also addressed several issues to enhance your overall experience.
1.5.3 Feb 8
Introducing enhanced audio for your listening pleasure. In this update, enjoy clearer and more immersive sound with improved speaker output, bringing out the best in every voice. We have also addressed several issues to enhance your overall experience.
1.5.2 12/16/2025
Celebrate the New Year with our special edition theme icon. Refresh your app's look and feel with a festive touch that captures the spirit of the season. Update now to enjoy a fresh start and add a bit of holiday cheer to your experience.
1.5.1 12/13/2025
Experience a smoother and more reliable app with our latest performance enhancements. We've streamlined the user interface, removing distractions to provide you with a simple and intuitive design. Enjoy effortless navigation and a seamless user experience.
1.5.0 12/07/2025
Enjoy a smoother and more reliable experience with our latest update.
1.4.1 11/09/2025
Made it better for you: cleaner design, seamless podcasts.
1.4.0 11/07/2025
Made it better for you: cleaner design, seamless podcasts, smarter flashcards, easy-to-navigate mind maps, and improved chats.
1.3.1 08/01/2025
Flashcards are here.
Lalein just got even smarter.
- Turn any content into flashcards — ideal for quick reviews, deep dives, or sharing key takeaways
- Already using BlendIn to chat with hosts? Keep the dialogue going
- Building with Mind Maps? Now connect those ideas to flashcards for a complete creative loop
Your creative toolkit keeps growing — structure, explore, and now review your ideas, all in one place.
Lalein: where podcasts start, and ideas keep evolving.
1.3.0 07/07/2025
Lalein just got even smoother.
- Freshened up the design for a cleaner, more welcoming interface
- Squashed a few bugs to keep things running rock-solid
Your experience matters — and we’re constantly fine-tuning Lalein to make it even better.
1.2.8 06/27/2025
A smoother Lalein, inside and out.
- Updated the look and feel for a more refined, comfortable interface
- Streamlined interactions so everything just feels easier
- Patched up some minor issues for better overall stability
Enjoy the smoother ride — we’re always working to make Lalein better for you.
1.2.7 06/24/2025
Fresh tweaks, smoother flow.
- Polished the UI/UX for a nicer, smoother feel
- Improved the settings page for easier, more intuitive use
- Fixed a few pesky bugs behind the scenes
Your experience? More seamless than ever.
Lalein keeps evolving — one thoughtful update at a time.
1.2.6 06/23/2025
Small update. Big reliability.
- Notifications now work every time — no more missed messages.
- Minor UI/UX tweaks to keep things feeling smooth.
- And yep, more bugs got the boot.
Lalein keeps getting better — quietly powerful, just like your next episode.
1.2.5 06/20/2025
Just patches this time — but all the right ones.
We’ve tightened things up, smoothed a few edges, and made everything run just a bit better.
- Minor bug fixes
- Small performance boosts
- Nothing flashy, just clean, solid improvements under the hood
Your creative flow? Smoother than ever.
More to come soon.
1.2.4 06/15/2025
We’re talking to you — literally.
Lalein just got personal.
- Now with in-app messaging, we can reach out directly inside the app. Got a feature request? Sent a report? You’ll hear from us right where you work. No more guessing.-
- And yes, the bug-squashing continues.
This isn’t just a platform — it’s a partnership.
You create. We listen. Now we talk back.
1.2.3 06/14/2025
Lalein just got louder — and more social.
Now you're not just making podcasts — you're part of them.
- “Blend In” is here. Listeners can now jump into the conversation — chat with hosts, ask questions, and actually be part of the show.
- Creating? You still get mindmaps, YouTube transcripts, and audio uploads — all in one sleek space.
- Polished up a few bugs too. (They didn’t stand a chance.)
UI? Still vibing.
Community? Now alive.
You? Fully in the mix.
1.2.2 06/13/2025
Lalein just got a little shinier.
No new tricks — just smoother moves.
- UI? Sleek as ever, now even slicker.
- UX? Tuned up like your favorite playlist.
- Flow? Butter.
We tightened bolts, smoothed edges, and polished the surfaces you touch most. No feature overload — just a better feel everywhere.
Still the creative command center you know. Just... smoother.
1.2.1 06/08/2025
Lalein just leveled up — again.
Now you're not just making podcasts — you're building ideas from every angle.
- Mindmaps? Oh yeah. Sketch out your episode flow, explore connections, and watch your thoughts come to life.
- Got audio? Upload voice notes, interviews, or rambles. We’ll turn them into structured content, no sweat.
UI? Still smoother than a lo-fi beat.
Bugs? Still exorcised.
You? Still unstoppable.
What started as “just make a podcast” is now your creative command center. Remix the web, map your mind, drop in your voice — and turn it all into something people want to hear.
1.2.0 06/04/2025
Lalein just got a whole lot smarter — YouTube videos? Yeah, we speak that now.
- Link any YouTube video, and we’ll pull the transcript straight in. Turn video talk into podcast gold, effortlessly.
- UI still slicker than your favorite playlist shuffle. Fast, clean, and fun to use.
- More bugs sent packing. Gremlins tried to crash the party — we revoked their invite.
What began as “just make a podcast” now lets you remix the internet. Bring in ideas from anywhere, shape them into something new, and share with the world.
1.1.4 05/23/2025
Lalein is leveling up — podcasting just got even easier (and smoother than your morning coffee).
- We’ve polished the UI till it shines. Interactions are now buttery-smooth and snappy — like your favorite sitcom comeback.
- Squashed a few pesky bugs that thought they could steal the spotlight. Not today, gremlins.
What began as “just make a podcast” is now your global recording studio — no passport, no visa, not even pants required.*
*Okay, maybe wear pants. But Lalein doesn’t judge.
1.1.3 05/21/2025
Lalein is evolving to make your podcasting journey even easier — starting with how you log in:
- Updated authorization system: Now you can sign in effortlessly with Apple or your email. Fast, secure, and totally you.
- UI interactions are now smoother and more responsive — everything runs like clockwork.
- Fixed minor bugs that were trying to crash the vibe.
What started as "just make a podcast" has become something even bigger — your go-to international recording studio, no passport required.
1.1.2 05/19/2025
New update — new waves!
Lalein have been improved again to make your journey to the perfect podcast even smoother:
- UI interactions are now smoother and more responsive — everything runs like clockwork.
- Updated the design for tablets: now it's even more pleasant to use Lalein on a larger screen.
- Improved transcription quality: now they're clearer and more accurate, like you wrote them yourself.
- Fixed small bugs that were trying to ruin your mood.
It was supposed to just be "make a podcast," but it turned into… an international recording studio!
1.1.1 05/14/2025
What’s New
- Custom Speakers: You can now create fully personalized speakers tailored to your needs. Customize everything — voice, background, expertise, and profession — to make your podcast truly yours.
- Improved UI/UX and micro-interactions
Thanks for using Lalein! We’re always working to improve — let us know what you think.
1.1.0 05/11/2025
What’s New
- New onboarding page
- Improved UI/UX and micro-interactions
Thanks for using Lalein! We’re always working to improve — let us know what you think.
1.0.3 05/06/2025
What’s New
- New report form: Easily report bugs, share ideas, and suggest features.
- Improved onboarding: A smoother and more intuitive first-time experience.
Thanks for using Lalein! We’re always working to improve — let us know what you think!
1.0.2 05/03/2025
Introducing enhanced audio for your listening pleasure. In this update, enjoy clearer and more immersive sound with improved speaker output, bringing out the best in every voice. We have also addressed several issues to enhance your overall experience.
more Version 1.6.0 Apr 6
Data Linked to You The following data may be collected and linked to your identity:
Data Not Linked to You The following data may be collected but it is not linked to your identity:
Supported Features
Dark Interface
Sufficient Contrast