Castbox's Wang Xiaoyu: 50+ Products, 50M+ MAU, How a Podcast App Went Global and Became an AI-Powered Product Factory

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"For Real" is a general business podcast. We want to build a platform for sharing and exchange where anyone curious about business, technology, and venture capital can come away with something new. Each episode features a different ZhenFund investor as host, joined by leading figures across industries to dive deep into tech trends and the impact of innovative technologies. When we talk hot topics in tech, we only want to give you the most professional take.

Of course, we hope this is more than just a podcast — it's an exploration of entrepreneurship. ZhenFund: your first stop in entrepreneurship! We look forward to meeting you and discovering new possibilities together.

In 2016, Castbox launched and entered the overseas mobile podcast market, filling a market gap. Registered users once reached 30 million, placing it at the top of third-party podcast products.

After 2018, Spotify threw serious money into the podcast market. Castbox faced commercialization challenges and pressure from the broader environment. Founder Renee Wang led her team through a difficult exploration, ultimately achieving a breakthrough through a portfolio-style transformation, developing a range of entertainment-related products. Today, this former Google employee — a Peking University psychology graduate with years of development experience — is following her entrepreneurial path, leading a company with over 50 products and more than 50 million monthly active users worldwide.

As a surfer of the internet entrepreneurship era, Wang and her team actively track AI technology developments and have launched several AI-native products. She has her own distinctive views on how to build a good AI product in an internet environment. In this episode, we invited Monica Xie, Investment Vice President at ZhenFund, and Renee Wang, Founder & CEO of Castbox, to discuss her unconventional entrepreneurial path, her thinking on founder mindset and the forms entrepreneurship can take, as well as the changes and challenges her company has encountered in actively integrating AI technology.

Stay at the Table, Wait for Better Opportunities

Host

Monica Xie: Investment Vice President, ZhenFund

Guest

Renee Wang: Founder & CEO, Castbox (renee@castbox.fm)

Timeline

Renee's Entrepreneurial Journey: From Castbox to Product Portfolio

01:15 Peking University psychology, self-taught programming as a junior, bold move to Google then leaving to start a company

12:56 Founded Castbox, registered users once reached 30 million

15:48 Single-product commercialization difficulties, pivot to portfolio approach

How Founders Effectively Organize and Manage a Company?

24:04 Leveraging each region's strengths is the efficiency code for cross-border organizations

25:32 Founder Mode inspiration: regardless of scale, founders must stay in the details

27:30 Maintaining openness matters; citing new paradigms is a more advanced leverage point

What Impact and Challenges Does Applying AI Technology Bring to a Company?

30:53 From production to promotion, AI applications have driven historically fast growth

37:31 How to promote AI adoption in a company: founders must be able to surface hidden new tech talent

40:12 Management is anti-scale: smaller companies adapt better to integrating new technologies

43:21 Behind the portfolio approach: being market and revenue-oriented makes things easier

49:08 Facing insufficient productivity conversion from large models, is proactively increasing engineering investment worthwhile?

Entrepreneur Perspective vs. Investor Perspective; Building a Single Product Big vs. Portfolio Business

53:07 On investor psychology: don't need to win every time, but the biggest win must be in your portfolio

54:59 Two mindsets for building a company: as a business vs. as a cause

56:12 You have to stay at the table to get opportunities; always keep your nose attuned to markets and fresh technologies

01:00:39 Do internet products need to burn money early on?

01:01:56 Not all internet products are winner-take-all; learn to accept the natural diversity of products

How to Build a Good AI Product Right Now

01:04:07 Looking only at the application layer, ultimately you're still serving user needs

01:06:05 There's nothing truly new left on the internet; category is the prerequisite, organizational capability is what matters

01:08:21 Today's AI product managers need to actually understand AI, to know where AI's boundaries lie

01:14:06 Two characteristics of products with potential: fits addiction mechanisms + triggers flow state

On Entrepreneurship Itself: Founder Mindset and Behavior

01:19:09 Entrepreneurship as a lifestyle

01:20:52 Topic one: founder patience

01:25:31 Entrepreneurship has upside and downside; my downside is at least don't let investors lose money

01:28:45 Don't be obsessed with grand narratives; ground yourself first, then find the sky-high point

01:30:18 Topic two: founder pessimism and optimism

01:33:48 Do overseas entrepreneurs need to go to the US?

01:38:01 Rapid-fire Q&A

Related Recommendations

WeChat Account: Renee's Entrepreneurship Notes

Articles mentioned in podcast: The Patience of Entrepreneurship, The Pessimistic Optimist, Founder Mode

Books Renee mentioned: Blitzscaling, Four Thousand Weeks, Man's Search for Meaning (Frankl autobiography)

You can listen to us on Xiaoyuzhou, Apple Podcasts, and Ximalaya. If you have any suggestions or expectations for the show, welcome to interact in the comments section~

If you have any entrepreneurial ideas or collaboration interests, welcome to email media@zhenfund.com!

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