CastBox
CastBox

CastBox

DR87Ahrefs DR: 87/100. Top 25%. Measured by Ahrefs. Median 44.Agent41Agent Readiness: 41/100. Above median. Measured by StartupHub.ai. Median 41.Speed55Site Speed: 55/100. Below median. Measured by Google PageSpeed. Median 62.Trust85Data Trust: 85/100. Top 25%. Measured by StartupHub.ai. Median 61.

A global podcast platform offering a vast library of audio content and innovative discovery features.

2016Active80San Francisco, United States

About

Castbox is a free podcast app available for iOS and Android, offering access to over 259 million volumes of audio content. It serves listeners by providing a platform to discover and listen to a wide range of podcasts, including top shows and curated recommendations. The app also supports integration with smart devices like Amazon Alexa and Google Home, as well as in-car systems like Carplay and Android Auto.

Key facts

Website
castbox.fm
Headquarters
San Francisco, United States
Founded
2016
Employees
80
Total funding
$30M (Series B)
Business model
B2C

Funding rounds

Funding rounds raised by CastBox
DateRoundAmountLead investors
25 Apr 2018Series B$14M
1 Jun 2017Series A$16M

Tech stack

Detected on castbox.fm, last scanned 20 Oct 2026.

CDN
Cloudflare
Email provider
Google Workspace

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Frequently asked

Is CastBox trustworthy and reputable?

StartupHub's Data Trust & Reputation score for CastBox is 85 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.

How much funding has CastBox raised?

CastBox has raised a total of $30M in funding. The most recent round on record is Series B.

How many employees does CastBox have?

CastBox has approximately 80 people on record.

Public record

SEC filings, insider activity, nonprofit links and pay benchmarks for CastBox