Sonia Couto Launches Castempo, Podcast Management Software With Built-In Host Coaching

Toronto, Canada, November 9th, 2026, FinanceWire

Sonia Couto, founder of multiple global technology companies and host of the top 2 percent ranked podcast Tenacity with Sonia C., has announced the launch of Castempo (castempo.com), podcast management software built to help hosts choose better guests, create better interviews, and improve every episode they publish.

Castempo brings the full podcast workflow into one connected platform. Hosts can evaluate potential guests, prepare personalized interview questions, organize episodes, and generate publishing content from a single guided system. The platform covers both pre- and post-production, from the first guest request to the completed episode.

The feature that sets Castempo apart is its host coach. After each recording, the software analyzes the interview transcript and gives the host personalized feedback on where they succeeded, where they struggled, and how they can improve. Hosts can track their scores over time and hear their coach walk them through every result.

Built From More Than 137 Interviews

Castempo grew directly out of Couto's experience hosting Tenacity with Sonia C., a podcast that has released more than 137 episodes across three seasons, featured founders from more than 50 countries, and now reaches 200,000 total downloads while ranking in the top 2 percent of all podcasts globally.

"I have sat across from hundreds of founders and I have made every hosting mistake myself," said Couto. "The host is the part of the podcast listeners connect with most, but hosts almost never get feedback on how they actually interview. Castempo looks at your real conversations and shows you what worked and what did not. That is how you get better instead of just publishing more."

Research supports the focus on the host. According to The Podcast Study 2026, 82 percent of podcast listeners with a favorite show say the host is a big part of, or the only reason, they listen. Castempo is designed to develop exactly those skills, with coaching based on the host's actual interviews rather than generic advice.

One Connected Workflow, From Guest to Published Episode

Castempo replaces the scattered tools most hosts juggle. The platform covers guest evaluation, booking, show kits, interview preparation, transcripts, host coaching, publishing content, and episode history in one place. It is built to complement existing recording and editing tools rather than replace them.

"Everything I am building connects to the same goal," said Couto. "Helping founders and creators move forward when they do not have all the answers. Castempo does that for podcast hosts. It takes the guesswork out of who to book, how to prepare, and how to keep improving behind the microphone."

Castempo is available now, with a free trial at castempo.com. No credit card is required to start.

About Sonia Couto

Sonia Couto is the founder of multiple global technology companies with more than 20 years of experience building businesses. She is the host of Tenacity with Sonia C., a podcast that ranks in the top 2 percent globally with 200,000 total downloads, featuring honest conversations with founders about the decisions, failures, pivots and resilience behind building companies. She is also the founder of Castempo, podcast management software that helps hosts evaluate guests, prepare stronger interviews, and improve through personalized host coaching.

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