AI Podcast Creator: PDF & Text
Articles & Notes into Podcasts
Free · In‑App Purchases
Turn what you want to read into a podcast you can listen to.
Castella creates AI audio conversations from your text, PDFs and public web articles. Add your source, choose your voices and language, and make an episode for your next walk, commute or study session.
BRING YOUR OWN CONTENT
Paste notes or text, upload a PDF, or add an article link. Build an episode around the material you want to understand or revisit.
MAKE IT YOURS
Preview voices and choose your hosts. Set the podcast language, conversation style and episode length.
LISTEN AND REVISIT
Keep your episodes in a personal library. Adjust playback speed and use the transcript to find or copy a passage.
Generation requires an internet connection and uses credits. Available plans and credit options are shown in the app.
Privacy Policy: https://kipachu.com/docs/castella/privacy
User Agreement: https://kipachu.com/docs/castella/terms
more Improved iPad layouts in portrait, landscape, and split view. More reliable content imports after signing in and notification registration.
1.7.6 3d ago
This update removes the startup loading screen and adds a Rate app option in Settings.
1.7.5 4d ago
Meet the new introduction to turning text, PDFs, and links into podcasts. Explore voices, listening, and transcripts, with smoother navigation and subtle haptic feedback.
1.7.4 6d ago
A simpler podcast creation flow, clearer voice and language controls, and updated library and playback screens.
1.7.3 6d ago
A simpler podcast creation flow, clearer voice and language controls, and updated library and playback screens.
1.7.2 Oct 11
Enjoy clearer, more immersive audio in every listening session. Improved speaker output makes voices easier to hear and brings out more detail in music, videos, and calls. We also fixed several issues to deliver a smoother, more reliable experience.
1.7.1 Aug 23
Enjoy clearer, more immersive audio in every listening session. Improved speaker output makes voices easier to hear and brings out more detail in music, videos, and calls. We also fixed several issues to deliver a smoother, more reliable experience.
1.7.0 Aug 21
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
Improved iPad layouts in portrait, landscape, and split view. More reliable content imports after signing in and notification registration.
more Version 1.7.6 3d ago
Data Linked to You The following data may be collected and linked to your identity:
Purchases Contact Info User Content Identifiers Usage Data Diagnostics Data Not Linked to You The following data may be collected but it is not linked to your identity:
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