Episode Summary: "Cello: How a Scrappy MVP Became a 7-Figure SaaS with 7M Users" with Stefan Bader

Podcast Information:

• Title: The SaaS Podcast - SaaS, Startups, Growth Hacking & Entrepreneurship
• Host: Omer Khan
• Episode: 445
• Guest: Stefan Bader, Co-Founder and CEO of Cello
• Release Date: May 29, 2025

Introduction

In Episode 445 of The SaaS Podcast, host Omer Khan engages in a compelling conversation with Stefan Bader, the co-founder and CEO of Cello. Cello is an innovative all-in-one referral platform designed to help SaaS companies reward their users for bringing in new customers. Stefan shares his journey from identifying a significant gap in the market to scaling Cello into a 7-figure SaaS business with over 7 million monthly users.

The Genesis of Cello

Identifying the Gap

Stefan’s entrepreneurial journey began during his tenure as Chief Revenue Officer at a payment processing company. He observed a recurring issue: while users were actively bringing in new customers, there was no efficient system to reward them. Existing tools catered primarily to affiliates and influencers, leaving a void for individual user rewards.

Stefan Bader [03:01]: "Show me the incentives and I'll show you the outcome." — Charlie Munger

This insight became the catalyst for founding Cello in 2022, aiming to create a platform that seamlessly integrates referral rewards into SaaS products.

Building the MVP: Challenges and Learnings

Overcoming Compliance Hurdles

Developing Cello's Minimum Viable Product (MVP) was fraught with challenges, particularly around compliance. Stefan and his team had to navigate intricate compliance laws across multiple countries, international banking regulations, and tax requirements.

The Scrappy MVP Approach

Initially, Cello's MVP was rudimentary. Instead of a polished dashboard, customers accessed analytics through shared Notion pages, and operations were managed manually via Python scripts.

Stefan Bader [11:38]: "We were sharing via Notion pages... just Stefan's team running Python scripts and configuring everything manually behind the scenes."

Early feedback was critical. Some customers remarked that it wasn’t a product, yet Stefan remained steadfast, prioritizing the core functionality of generating referrals over initial product aesthetics.

Focusing on Core Value

Cello’s primary goal was to demonstrate that the platform could effectively generate more referrals. Stefan emphasized simplicity in pricing, adopting a success-based model where customers paid only when they profited from referrals.

Stefan Bader [14:58]: "We decided on a freemium success-based pricing and success in our world means referral ARR."

This approach was instrumental in building trust and proving the platform’s value despite its early-stage limitations.

Growth Strategies: From Early Adoption to Exponential Scaling

Educating the Market

A significant hurdle was that many SaaS companies were unaware of the need for a specialized referral platform like Cello. Stefan took on the role of educator, explaining how user referrals differ from traditional affiliate programs and highlighting the missed revenue opportunities.

Leveraging the "Powered by Cello" Loop

The breakthrough came with the innovative "Powered by Cello" link embedded in customers' widgets. This subtle branding exposed millions of users to Cello organically, acting as a powerful growth driver.

Stefan Bader [23:27]: "We have close to a million users opening our widget and therefore many, many eyeballs, which leads to quite a decent amount of inbound."

This strategy created a self-reinforcing loop: as more users interacted with the referral widget, more organic exposure led to increased sign-ups, fueling further growth.

Compounding Growth Systems

Cello’s growth strategy is built around creating compounding growth loops rather than relying solely on linear marketing activities. This approach ensures sustainable and exponential growth by continuously adding more components to the growth engine.

Stefan Bader [19:49]: "We believe in building always compounding systems where we just add more and more to that system in order to make it spin faster."

The company’s focus on growth loops, such as the casual contact loop, has been pivotal in driving consistent and scalable user acquisition.

Content Collaborations: Accelerating Awareness

Strategic Partnerships

Instead of building an audience from scratch, Stefan opted to collaborate with established content creators who already possessed substantial followings. This strategy expedited brand awareness and lead generation.

Collaboration with Kyle Poyar

A notable collaboration was with Kyle Poyar, a renowned growth expert. By providing proprietary data and unique insights, Cello co-created valuable content that reached tens of thousands of subscribers, significantly boosting their visibility.

Stefan Bader [31:33]: "We aimed as high as possible. I got in contact with Kyle Poyar... and we delivered content that was published on his Substack, reaching tens of thousands of inboxes."

Organic Over Paid Collaborations

Cello found greater success with organic content collaborations compared to paid ones. Authentic partnerships with influential creators yielded more engaged and responsive audiences.

Stefan Bader [35:44]: "The organic content collaborations worked because we provided a lot of value to the piece... people were actually investing in it to create something valuable for the community."

This approach not only enhanced credibility but also ensured that the content resonated well with the target audience.

Network Sales: Building Through Relationships

Initial Sales via Personal Networks

In the early stages, network sales played a crucial role. Stefan leveraged his personal and professional networks to secure initial customers and investors, offering them stakes in the company’s pre-seed round in exchange for their commitment to implement Cello.

Stefan Bader [40:11]: "I was reaching out to basically people in my network and... offered them a little ticket in our pre-seed round."

These early adopters served as design partners and helped validate the product, making it easier to attract subsequent customers through proven success and testimonials.

Transitioning Away from Network Sales

As Cello grew, the reliance on network sales diminished to about 5%, replaced by diversified growth channels like content collaborations and automated outbound strategies.

Building a Strong Company Culture

Prioritizing People

Contrary to the common practice of hiring developers or salespeople first, Cello’s second hire was a Head of People. Stefan recognized that a strong team is the backbone of a successful company.

Stefan Bader [43:39]: "Most founders would agree that their team, their people are the most important asset."

Hiring Filip as Head of People ensured that talent acquisition, retention, and culture-building were prioritized from the outset, fostering a high-performance environment.

Quick Fire Questions

Towards the end of the episode, Stefan shares personal insights through a series of quick-fire questions:

1. Best Business Advice Received:

   • "Pick your battles." — Emphasizing the importance of focusing on what truly matters.

2. Recommended Book:

   • "The Acceleration Formula" by Marco Bersch and "Multipliers" for managers. — Valuable resources for go-to-market strategies and effective management.

3. Attribute of a Successful Founder:

   • "Having a reality distortion field." — The ability to envision and push beyond perceived limits.

4. Favorite Productivity Habit:

   • Daily walking meetings. — Encouraging active recovery and mental clarity.

5. Dream Business Idea:

   • LLM SEO. — Reflecting interest in leveraging language models for search engine optimization.

6. Fun Fact:

   • His first entrepreneurship professor tried to discourage him from continuing his initial business venture, which he overcame.

7. Passion Outside Work:

   • Football fandom, specifically following Bistrutka.

Conclusion

Stefan Bader’s journey with Cello exemplifies resilience, strategic growth, and the importance of prioritizing core value over superficial product features. By focusing on building effective growth loops, fostering strategic partnerships, and cultivating a strong team culture, Cello has successfully scaled to a 7-figure SaaS business serving millions of users. This episode provides invaluable insights for SaaS entrepreneurs looking to navigate the complexities of building and scaling their own businesses.

Connect with Stefan Bader:

• LinkedIn: Stefan Bader

Explore Cello:

• Website: Cello