Podcast distribution

Castro Podcast App Podcast Submission Services

Castro is one of the last genuinely independent iOS podcast players still standing — and it is one of the few that has no submission form at all. If you have been hunting for a "submit to Castro" button and coming up empty, you are not doing anything wrong. The button does not exist. Getting your show into Castro is an indirect, technical job, and doing it badly is why thousands of podcasts sit invisible in an app their ideal listeners use every single day.

SEOServiceinIndia handles that job end to end. We audit your RSS feed, get you correctly published and approved in Apple Podcasts, confirm your live Castro listing, tune your artwork and metadata for the way Castro actually displays shows, and then syndicate the same clean feed across 30+ directories worldwide. We work with podcasters and brands in the USA, UK, Canada, Australia, Singapore and India, and we report on every listing we place.

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Castro podcast app submission services by SEOServiceinIndia

Platform reality

What Castro Actually Is in 2026

Plenty of "top podcast submission sites" listicles still describe Castro from a decade ago, so let's set the record straight before you spend anything.

Castro is alive, actively maintained, and independently owned. It was built by Supertop in Victoria, Canada, and was acquired in January 2024 by Bluck Apps, a Brooklyn-based independent studio run by Dustin Bluck, a former Instagram engineer who also built the Android podcast app Aurelian. Since the acquisition the app has shipped regular releases — versions through 2026.7 as of mid-2026 — launched a dedicated iPad app in August 2025, and released a companion discovery app called Pod Seek in March 2026. It runs on iPhone, iPad, Mac, Apple Watch and Apple Vision, and monetises through Castro Plus subscriptions rather than by selling out its listeners.

More important for you: Castro deliberately serves heavy listeners. Its own positioning is aimed at people with 100+ subscriptions who triage aggressively. Its signature Inbox-and-Queue system means every new episode of yours lands in a compact list where the listener decides in about two seconds whether to queue it or bin it. That single behavioural fact should change how your show title, episode titles and artwork are written — and it is exactly what most submission services ignore.

Castro app Inbox and Queue triage interface for podcast listeners

How Castro indexes

The Honest Part: Castro Has No Submit Button

There is no Castro submission form, no partner portal, no paid fast-track. Castro builds its catalogue by reading the Apple Podcasts directory. If your show is properly listed and approved in Apple Podcasts, it becomes available in Castro. If it is not, no amount of emailing Castro support will help you.

That has three consequences most podcasters discover the hard way:

Your Apple listing is the real gate. Every failure point sits upstream — a malformed RSS feed, missing <itunes:email> or <itunes:owner> tags, artwork below Apple's size requirements, a feed that returns intermittent errors, or a show that was submitted but never actually approved. Fix Apple and Castro follows.
Indexing is not instant. Even after Apple publishes you, Castro's ingestion can lag. Hosts that track automatic distribution report waits of several weeks — occasionally more than a month — before a new show is picked up and a Castro link becomes available. Anyone promising you a same-day Castro listing is either guessing or lying.
Verification takes a specific trick. You confirm the listing by taking the numeric Apple Podcasts ID from your Apple URL and loading castro.fm/itunes/YOUR-APPLE-ID. That returns your Castro share page — artwork, author, summary and a tap-through that opens the show directly inside the app. That URL is also the link you should be putting on your website, in your email footer and on your social bios, because it is the only clean, deep-linkable Castro address your show has.

We say all of this on the page instead of hiding it, because you deserve to know what you are buying: you are not paying us for a listing fee — Castro charges nothing. You are paying for the technical work that makes the listing happen, the verification that proves it happened, and the optimisation that makes it worth having.

RSS feed to Apple Podcasts to Castro indexing chain diagram

Managed workflow

Our Castro Podcast Submission Process

Step 1 — Full RSS Feed Audit

We run your feed through strict validation and read it line by line. We check required channel tags, owner and email tags, category and subcategory mapping against Apple's current taxonomy, explicit flags, language declaration, enclosure URLs, file types, episode GUIDs, <itunes:type>, season and episode numbering, and artwork dimensions and file weight. You receive a written audit listing every error, every warning and the exact fix — whether we implement it or your host does.

Step 2 — Apple Podcasts Connect Submission or Recovery

We submit the validated feed through Apple Podcasts Connect, configure show settings, territory availability and update frequency, and manage the review queue. If your show was previously rejected or has been stuck "pending" for weeks, we run a recovery: diagnose the actual rejection cause, correct it, and resubmit. Approval typically lands within a few days once the feed is clean.

Step 3 — Castro Listing Verification

We monitor for ingestion and verify your live listing through your Apple ID share URL, capture a dated screenshot, and hand you the permanent Castro link for your press kit and website. We keep checking until it is genuinely live — we do not mark the job complete on the assumption that it will appear eventually.

Step 4 — Metadata and Artwork Optimisation for Castro's UI

Castro shows episodes compactly. Long, front-loaded episode titles get truncated; artwork that looks fine at 3000px can turn to mush at thumbnail size. We rewrite your show title and description for search and for scanning, restructure episode titles so the hook lands in the first 35 characters, add proper episode summaries and chapter-friendly show notes, and rework artwork so the core mark still reads at 60 pixels. This is the difference between a listener queuing your episode and clearing it.

Step 5 — Wider Directory Syndication

A Castro listing on its own is not a distribution strategy. Using the same corrected feed, we submit and claim your show across the platforms that actually carry audience: Apple Podcasts, Spotify for Creators, YouTube Music, Amazon Music/Audible, iHeartRadio, Pocket Casts, Castbox, Podcast Addict, Player FM, Deezer, Podchaser, TuneIn, fyyd, Podcast Index and more — including the ones that require a manual claim or an emailed verification code that one-click distribution never completes.

Castro podcast listing verification and share page screenshot

Wider distribution

One Clean Feed, Distributed Further

Your corrected podcast feed is prepared for consistent submission across the directories that matter, without duplicating or breaking your show data.

Multi-directory podcast syndication across 30 plus listening platforms

Who it helps

Who This Service Is Built For

New podcasters launching a first show. You get the feed right once, before bad metadata is baked into every directory that copies it.
Established shows with broken or partial distribution. If you are on Apple and Spotify but nowhere else, or your Castro listing never appeared, we find the break and repair it.
Shows migrating hosts. Migration is where feeds die. We handle GUID preservation, 301 redirects from the old feed and verification that every directory followed the move without duplicating or dropping your archive.
Brand, B2B and agency podcasts. For a business podcast, presence across niche premium apps matters more than raw download counts, because that is where decision-makers with 100+ subscriptions actually listen.
Multi-market shows. We handle territory settings, language declaration and category selection differently for a show targeting Singapore and India versus one targeting the US and UK — regional discovery behaviour is not the same.

Podcast submission services for USA UK Canada Australia Singapore and India

Packages

Castro Podcast Submission Packages

Starter — Single Show Setup

Full RSS feed audit and error report, Apple Podcasts Connect submission and review management, Castro listing verification with screenshot proof, your permanent Castro share link, show title and description optimisation, and submission to 10 core directories. Ideal for a first launch.

Growth — Submission Plus Optimisation

Everything in Starter, plus episode-level title and show-note rewriting for the first batch of episodes, artwork review with thumbnail-legibility recommendations, category and keyword mapping across each directory's own taxonomy, submission and manual claim across 25+ directories, Podcasting 2.0 namespace tags, and a full listing report with live links.

Enterprise — Ongoing Distribution Management

Everything in Growth, plus host migration with GUID and redirect management, private and premium feed setup, monthly listing health monitoring across all directories, ongoing episode metadata optimisation, transcript and canonical episode-page recommendations for search and AI answer engines, quarterly performance reviews, and a named account manager.

Pricing is quoted after a short audit call, because a five-episode launch and a 400-episode archive migration are not the same job and should not carry the same price.

Castro podcast submission service packages Starter Growth Enterprise

Why choose us

Why Podcasters Choose SEOServiceinIndia

We tell you what a platform actually does. Half the pages ranking for "submit podcast to Castro" describe a submission form that has never existed. We keep this page factually current — ownership, release cadence, indexing behaviour — and we correct it when platforms change.
Technical depth, not form-filling. Our team works daily with RSS specifications, feed validators, host migrations, schema markup and podcast SEO. Directory submission is the last step of the job, not the whole job.
Proof, not claims. Every listing we place is delivered as a live, clickable link with a dated screenshot. If a directory has not indexed you yet, we tell you that plainly and keep monitoring.
Global delivery, local understanding. We run podcast and search work for clients across the USA, UK, Canada, Australia, Singapore and India, with an understanding of how discovery, category conventions and listener behaviour differ across those markets.
Transparency on cost. Where a platform is free to list on — and Castro is one of them — we say so. You are paying for expertise and execution, and you should always know exactly which is which.

SEOServiceinIndia podcast submission and distribution team expertise

Free audit

Get Your Podcast Into Castro — Properly

Your show does not need another entry in a spreadsheet of directories. It needs a feed that validates, an Apple listing that is genuinely approved, a verified Castro link you can share, and metadata written for how people actually triage episodes.

Send us your RSS feed URL and we will run a free preliminary check and tell you exactly where you stand — including whether you are already listed and simply never knew it. Contact SEOServiceinIndia today to begin.

Request your free podcast feed audit WhatsApp our podcast team [email protected]

Can I submit my podcast to Castro directly? +

No. Castro has no submission form or podcaster portal. It builds its catalogue by reading the Apple Podcasts directory, so the only route in is a correctly approved Apple Podcasts listing. Our service handles that upstream work and then verifies your Castro listing once it appears.

How long does it take for my podcast to appear on Castro? +

Apple review usually takes a few days once your feed is clean. Castro's ingestion afterwards can take anywhere from a few days to several weeks, and hosts have reported waits beyond a month for brand-new shows. We monitor and confirm rather than assuming.

Is Castro still active in 2026? +

Yes. Castro was acquired by Bluck Apps in January 2024 and remains actively developed, with regular releases through 2026, an iPad app launched in 2025 and a companion discovery app, Pod Seek, released in 2026.

Does it cost anything to be listed on Castro? +

No — Castro charges nothing for a listing. Our fee covers the feed audit, Apple submission and review management, listing verification, metadata and artwork optimisation, and syndication to the wider directory set.

My podcast is on Apple but not showing in Castro — what's wrong? +

Usually one of three things: your show is published in Podcasts Connect but not fully approved for public distribution, your feed intermittently errors when Castro attempts to read it, or it simply has not been ingested yet. Our audit identifies which of the three applies.

How do I get my Castro podcast link? +

Take the numeric Apple Podcasts ID from your Apple show URL and open castro.fm/itunes/ followed by that ID. That returns your Castro share page. We generate and verify this for every client and supply it as a deliverable.

Do you submit to other podcast directories as well? +

Yes. Every package includes multi-directory submission, and our Growth and Enterprise tiers cover 25+ platforms including the ones that require a manual ownership claim or emailed verification code that automated distribution never completes.

Do you work with podcasters outside India? +

Yes. We deliver podcast submission and distribution work globally, with a significant client base across the USA, UK, Canada, Australia and Singapore alongside India, and we adjust territory, category and language settings for the markets you are targeting.