Software · head to head
Plex vs Castro
The short version
- Each has a real cost: Plex plex restricts free remote streaming on certain platforms including Roku, with expansion to Android TV and Apple TV planned; Castro iOS/Apple-only, no Android support
- They diverge on capability: Plex covers Financial management, Castro covers Podcast app.
Where they differ
Only the attributes on which Plex and Castro actually diverge.
Identical on both: starting price (Free), pricing model (Unknown), free tier (Yes), user rating (Not yet rated), category (Unknown).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Plex
- Financial management
- Manufacturing execution
- Supply chain
- Quality management
- Analytics
- IoT platforms
- REST APIs
- Webhooks
Only in Castro
- Podcast app
- Inbox system
- Triage view
- Playback
- Discovery
- Podcast services
- Apple services
- Account security
Both cover
- Web support
What people use each for
The jobs each tool is most often brought in to do.
Plex
- Industry 4.0not Castro
- Real-time monitoringnot Castro
- IoT integrationnot Castro
- Smart manufacturingnot Castro
Castro
- Podcast managementnot Plex
- Listeningnot Plex
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Plex
- Plex restricts free remote streaming on certain platforms including Roku, with expansion to Android TV and Apple TV planned
- Remote streaming quality degrades significantly if Plex cannot establish direct connection and falls back to relay mode
- Upcoming sunsetting of plugins, Cloud Sync, and Watch Later features
Castro
- iOS/Apple-only, no Android support
- No unified inbox for managing multiple podcast accounts
- Recent ownership change (2024) may affect long-term development
Pricing, plan by plan
Plex
FreeNo published plan breakdown. See the Plex review.
Castro
Free- FreeFree
- Core podcast management
- Inbox/queue/archive
- CarPlay support
- Castro Plus$24.99/year
- Custom per-podcast settings
- Trim Silence
- Enhance Voices
Which should you pick?
Choose Plex if
- You need financial management.
- You want to start without paying.
- You work on Roku, Fire TV, Apple TV, Android TV, Google TV, Xbox, PlayStation, iOS, Android, Web, Windows, macOS, Linux.
- You also want manufacturing execution.
Choose Castro if
- You need podcast app.
- You want to start without paying.
- You work on iOS, Apple Watch, iPad.
- You also want inbox system.
Questions people ask
- Is Plex or Castro better?
- Neither clearly leads. Plex starts at Free and Castro at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Plex or Castro?
- Plex starts at Free and Castro at Free.
- Does Plex or Castro run on more platforms?
- Plex runs on Roku, Fire TV, Apple TV, Android TV, Google TV, Xbox, PlayStation, iOS, Android, Web, Windows, macOS, Linux. Castro runs on iOS, Apple Watch, iPad.
- Can I use Plex for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Plex best used for?
- Plex is most often used for industry 4.0, real-time monitoring, iot integration, smart manufacturing. Of those, industry 4.0 and real-time monitoring are not what Castro is typically brought in for.
- What can Plex do that Castro cannot?
- Plex covers Financial management, Manufacturing execution, Supply chain, Quality management. Castro covers Podcast app, Inbox system, Triage view, Playback. Both handle Web support.
Answered from the vendors’ own pages
Plex: Is Plex Media Server free?
Yes. Plex Media Server and the ad-supported streaming catalog are free. Plex Pass is an optional subscription at 6.99 USD per month or 69.99 USD per year that adds features like hardware transcoding and offline sync.
SourceCastro: How much does Castro cost?
Castro 3 is free to download with optional Castro Plus subscription at $24.99/year (includes one-week free trial).
SourcePlex: Can I access Plex content offline?
Yes, but downloads have limitations. Downloaded content may have an expiration period and is specific to the device where downloaded. Downloads are not available on shared libraries in some cases.
SourceCastro: What platforms does Castro support?
Castro is available on iPhone with an Apple Watch app and is expanding to iPad (launched August 4, 2025). There is no Android version.
SourcePlex: What devices does Plex support?
Plex apps are available on Roku, Fire TV, Apple TV, Android TV, Google TV, Xbox, PlayStation, Samsung Smart TV, LG Smart TV, iOS, Android, and web browsers. Server software runs on Windows, macOS, Linux, NAS devices, and Docker.
SourceCastro: What are the key features of Castro Plus premium subscription?
Castro Plus adds custom per-podcast settings including Episode Limit, Trim Silence, Enhance Voices, Mono Mix, Skip Intros, and variable playback speed.
SourcePlex: What is included in the free Plex catalog?
Plex's free ad-supported streaming catalog includes 14,000+ movies and shows from Lionsgate, MGM, Warner Bros, and Crackle Originals.
SourceCastro: How does Castro organize podcasts?
Castro uses an inbox/queue/archive split system where the inbox contains notifications of new episodes and the queue serves as an active playlist.
Source