Casterly vs InteroCast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Casterly
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Your podcasts, nothing else. Casterly is a clean, retro-inspired podcast player for people who just want to listen. No suggested shows. No algorithmic noise. No cluttered feeds trying to tell you what to hear next. No personal data collected. Just your podcasts, ready to play. Everything you need - Search, browse and subscribe to unlimited podcasts - Download episodes for offline playback - Auto-download new episodes from your subscribed shows - Native Apple Watch companion app with complication - New episode notifications - turn them on or off for each show individually - Save episodes to revisit later - Chapter support - AirPlay support - iCloud sync across your devices - Home screen widget with playback controls - Manually control storage limits Unlock the full experience with Casterly Pro which gives you: - CarPlay support for hands-free listening on the road - Variable playback speed - Sleep timer - Import/export OPML files for easy migration - Add any podcast directly via RSS feed, perfect for indie and niche shows - Helps support a one-person indie app studio Privacy policy: https://sodiumstudio.com/casterly-privacy Terms of use: https://sodiumstudio.com/casterly-terms Proudly made in New England
InteroCast
A private podcast player that runs entirely on your device. Enjoy features like offline listening, customizable queues, and AI-powered transcripts and summaries. Your data stays with you, with no tracking or accounts.
- On-device podcast playback
- No account or tracking
- AI-powered transcripts and summaries
- Offline episode downloads
- Customizable playback queue
- CarPlay and Home Screen widget support
- Shareable transcript clippings
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A calmer, more private way to listen - and to actually engage with what you hear. InteroCast is a complete podcast player that runs entirely on your device. Search and subscribe, build a queue, download for offline, and listen in a clean, editorial design. No account. No tracking. No server in the middle. THE BASICS, DONE WELL • Find shows by name, or add any podcast by RSS URL • "Up Next" queue you can reorder with a long-press • Variable speed, skip controls, and a sleep timer • Download episodes for offline listening • New-episode notifications for shows you follow • CarPlay support and a Home Screen widget • iCloud sync keeps your library across devices • Built for iPhone and iPad, with a landscape two-pane layout GO DEEPER WITH AI (OPTIONAL) Bring your own OpenAI or Anthropic key to unlock: • Transcripts that follow along as you listen — generate them with OpenAI Whisper, or free and entirely on-device with Apple Intelligence • Ask - a chat assistant that knows your exact position in the episode, so you can ask "what was just said?", "summarize so far," or "what's coming up?" • Voice mode — a hands-free, real-time conversation about whatever you're hearing SAVE THE GOOD PARTS • Long-press any transcript line to clip it • Turn clippings into shareable pull-quote cards PRIVACY BY DESIGN Your library, history, downloads, and preferences live only on your device. There's no InteroCast account and no analytics server. When you use an AI feature, the request goes straight from your device to OpenAI or Anthropic with your own key — it never passes through us. Apple Intelligence transcription happens fully on-device. InteroCast is free to use as a podcast player. The AI features use your own API key, so you pay the providers directly only for what you use. A quieter way to listen.
Screenshots
Verdict
The clearest difference is iOS requirement: InteroCast at 15.1 against Casterly's 17.6. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Casterly sells 1 in-app purchase, starting at $9.99 per year and InteroCast sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Casterly ships an update fortnightly, InteroCast every 2 weeks. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.
| Parameter | Casterly | InteroCast |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Number of ratings | — | 1 — better |
| Update frequency | Fortnightly | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 15.1 — better |
| Further details — not scored | ||
| Size | 9 MB | 38 MB |
| Age rating | 12+ | 4+ |
| Developer | Sodium Studio, LLC | Seud.IO |
In-app purchases
Casterly
- Casterly Pro$9.991 Year
InteroCast
- Small tip$1.99
- Generous Tip$4.99
- Big Tip$9.99








