# Castbox

- **Name:** Castbox
- **Full title:** Castbox: Free Podcast Player & Audiobooks
- **Version:** 10.28.0
- **Developer:** Castbox.FM - Radio & Podcast & AudioBooks
- **License:** Freeware
- **Platform:** Android
- **Requires:** Android 6.0+
- **File type:** APK
- **Size:** 55.8 MB
- **Category:** Music & Audio
- **Updated:** 2026-08-28T00:00:00Z
- **SHA-256:** 2951c50e4f06ad6dc8fbd36854176394bc7a556f20c01736c8529ff07d5a5b23
- **Canonical page:** https://filecobra.com/app/castbox-podcast-player-apk/
- **Download page:** https://filecobra.com/download/castbox-podcast-player-apk/
- **Direct download:** https://dl.filecobra.com/releases/android/castbox-podcast-player-apk/10.28.0/sha256-2951c50e4f06/castbox-podcast-player-apk-10.28.0.apk

> Award-winning podcast player with in-audio search engine, personalized AI recommendations, audiobooks, FM radio, and silence trimming playback in 55.8 MB.

Castbox is an award-winning, AI-powered podcast player and audiobook application for Android. Renowned for its innovative in-audio search engine, Castbox lets you search for spoken keywords inside podcast audio tracks, guiding you directly to relevant timestamps in a feature-rich **55.8 MB package**.

Featuring silence trimming, vocal volume boost, personalized podcast recommendations, offline episode downloads, and access to over 95 million podcast episodes and audiobooks, Castbox provides a modern podcasting experience.

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## 🌟 Executive Overview & Key Tactical Highlights

Castbox uses machine learning NLP transcription to index spoken words inside podcast audio, making finding specific topics effortless.

### Key Architectural Strengths:
- **In-Audio AI Keyword Search**: Search spoken terms and jump directly to the exact minute in the episode.
- **Smart Silence Trimming DSP**: Eliminates awkward dead air without modifying vocal pitch.
- **Volume Boost Dialogue Enhancer**: Normalizes quiet podcast hosts in loud commuting environments.
- **Over 95 Million Episodes**: Discover shows across true crime, tech, comedy, and audiobooks.
- **Companion Integration**: Pairs with [Pocket Casts](/app/pocket-casts-podcast-player-apk/) and [AntennaPod](/app/antennapod-open-source-podcast-apk/).

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## 📊 Technical Comparison: Castbox vs. [Pocket Casts](/app/pocket-casts-podcast-player-apk/) vs. [AntennaPod](/app/antennapod-open-source-podcast-apk/)

| Feature Dimension | Castbox (FileCobra) | [Pocket Casts](/app/pocket-casts-podcast-player-apk/) | [AntennaPod](/app/antennapod-open-source-podcast-apk/) |
| :--- | :--- | :--- | :--- |
| **Spoken Word Search** | **In-Audio AI Search** | Title/Show Search Only | Title/Show Search Only |
| **Download Size** | **55.8 MB** | **24.0 MB** | **10.3 MB** |
| **Audiobooks & FM** | **Built-In Library** | Podcasts Only | Podcasts / RSS Only |
| **Silence Trimming** | **Yes** | Studio-Grade DSP | Basic Real-Time |
| **Cross-Platform** | **Android, iOS, Web** | Android, iOS, Web, Wear OS | Android (gpodder) |

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## 📋 System Requirements & Technical Specifications

| Hardware Component | Minimum Requirement | Recommended Spec |
| :--- | :--- | :--- |
| **Operating System** | Android 6.0 (Marshmallow) or higher | Android 11.0 / 12.0 / 13.0 / 14.0+ |
| **System RAM** | 2 GB RAM | 3 GB RAM or higher |
| **Storage Space** | 80 MB free space + podcast storage | Fast internal storage / microSD |
| **Architecture** | Universal ARM64, ARMv7 | Universal ARM64-v8a |

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## 🛠️ Step-by-Step Installation & Setup Guide

1. Download the verified `castbox-v10.28.0.apk` package via FileCobra's Cloudflare R2 mirror.
2. In Android Settings, grant **Install Unknown Apps** permission.
3. Open the APK and tap **Install**.
4. Open Castbox, subscribe to your favorite podcasts, enable Silence Trimming, and enjoy listening!

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## ❓ Frequently Asked Questions (FAQ)

### How does in-audio search work in Castbox?
Castbox uses AI speech-to-text models to transcribe podcast audio, allowing you to search for specific spoken words or topics and jump directly to that exact point in the episode.

### Can I listen to Castbox podcasts offline?
Yes. You can configure automated episode downloading on Wi-Fi so your favorite shows are ready for offline listening during commutes.

### Can I import my subscriptions from other podcast apps into Castbox?
Yes. Castbox supports standard OPML file import, allowing you to transfer all your subscriptions from Spotify, Apple Podcasts, or Pocket Casts in seconds.

## Editorial verdict

Castbox is an innovative podcast app distinguished by its groundbreaking in-audio speech search. With silence trimming, audiobooks, and rich community features in 55.8 MB, it is a powerhouse audio app.

### Strengths

- In-audio keyword search finding exact spoken timestamps.
- Smooth silence trimming and dialogue volume boost.
- Over 95 million episodes, audiobooks, and FM streams.

### Trade-offs

- Free version contains occasional audio and banner advertisements.

## FAQ

**How does in-audio search work in Castbox?**

Castbox uses AI speech-to-text models to transcribe podcast audio, allowing you to search for specific spoken words or topics and jump directly to that exact point in the episode.

**Can I listen to Castbox podcasts offline?**

Yes. You can configure automated episode downloading on Wi-Fi so your favorite shows are ready for offline listening during commutes.

**Can I import my subscriptions from other podcast apps into Castbox?**

Yes. Castbox supports standard OPML file import, allowing you to transfer all your subscriptions from Spotify, Apple Podcasts, or Pocket Casts in seconds.

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Source: https://filecobra.com/app/castbox-podcast-player-apk/ · Mirrored from the publisher's own release channel by FileCobra. FileCobra runs no antivirus lab of its own.