From tape deck to Subscription: Stefan Graf's Journey Building Jicki Sprachduschen
Volume #5 of "Happy Bootstrapping" Newsletter - Learning Languages with Jicki
In this recent episode 114 of Happy Bootstrapping, Stefan Graf shares the fascinating story behind Jicki Sprachduschen, an auditory language learning platform that offers a refreshing alternative to traditional app-based language learning methods.
The Evolution of a Bootstrapped Language Learning Business
Founded in January 2017, Jicki has grown into a successful mid-sized company with 18 team members, 14 of whom are full-time employees. The company generates over 1.2 million euros in annual revenue and maintains a startup mindset despite its growth.
"We're not a classic startup anymore by official definitions," Stefan explains. "When we talk to larger companies, we position ourselves as a medium-sized business. But internally, we still maintain that startup mentality—we test things quickly, make fast decisions, and embrace that bootstrapping mindset."
What makes Jicki’s story particularly interesting is its deep roots in language learning methodology. The concept originated more than 30 years ago when Christian (the father of co-founder Helge) imported the "Superlearning" approach from America and produced language courses on cassette tapes. After selling his publishing company with a clause that returned the rights if the buyer stopped production, Christian eventually regained ownership of these courses.
"Christian had these cassette tapes sitting in his basement, and his son Helge discovered them around 2015," Stefan explains. "Helge first digitized them and offered them as downloads, but quickly realized he needed partners with marketing and startup experience to take it further."
Building a Modern Language Learning Experience
Stefan joined the team after meeting Helge through beach volleyball, where Helge consistently shared his vision for auditory language learning. Along with another partner named Chris, they relaunched the company in 2017 with a focus on streaming and subscription-based access.
"We launched in January 2017 and were online by March," Stefan says. "We needed to generate revenue from day one since we were bootstrapping. We all had other jobs on the side and invested every euro back into the company."
The core concept behind Jicki’s "language shower" approach is immersion through audio. Users select a course, press play, and listen to a structured format that includes vocabulary segments (where foreign words are paired with German translations) followed by dialogues that incorporate the vocabulary in context. The courses focus on practical, real-life scenarios rather than isolated words.


"Many language apps teach you words like 'elephant' early on just because they're simple, but we focus on what you actually need—greetings, ordering coffee, navigating transportation," Stefan notes. "Our content is created with native speakers and builds naturally through storylines that bring cultural elements into the learning experience."
The Power of the Bootstrapping Approach
Despite limited resources, Jicki has achieved impressive growth through strategic decisions and careful financial management. After two years of completely self-funded operation, they secured a "BW Pre-seed" loan of 200,000 euros from the state of Baden-Württemberg (160,000) and a co-investor (40,000).
"We used that capital almost entirely for marketing to accelerate growth," Stefan explains. "Without that boost, we wouldn't be where we are today in terms of revenue. We've since paid back the loan completely, and now we're entirely self-financed."
This disciplined approach to finances extends to their product development strategy. The team makes data-driven decisions about which languages to develop next, focusing on market demand and competitive advantage. Their current offerings include English, French, Spanish, Italian, Swedish, Japanese, Russian, Greek, Ukrainian, and some German courses for Arabic and Ukrainian speakers.
Marketing Strategy and Evolution
Jicki’s marketing approach has evolved significantly over their eight-year journey. Initially focused almost exclusively on SEO, they've expanded into performance marketing channels that now drive the majority of their revenue.
"We invested heavily in SEO early on, creating over 200 landing pages that still bring traffic today," Stefan says. "But in the last 2-3 years, performance marketing has taken a much greater role—Facebook, TikTok, Instagram, and Google ads are now our primary revenue drivers."
Their social media strategy has also matured, with dedicated team members creating content tailored to different platforms. "We now have one employee who does nothing but edit videos—last year he produced over 700 videos, mostly short clips for TikTok, Instagram, and YouTube Shorts," Stefan notes.
January and November stand as their strongest months for customer acquisition, aligning with New Year's resolutions and Black Friday promotions. Their subscription offerings come in three tiers:
3 months (€29.85)
6 months (€47.70)
12 months (€71.40).
"Interestingly, our most popular package is the 12-month option," Stefan reveals. "Most customers understand that learning a language takes time, and this option offers the best value at around €6 per month."
The Technology Behind the Platform
From a technical standpoint, Jicki has taken a pragmatic approach to building their platform. The frontend is built on WordPress with custom extensions, while the audio files are hosted on Soundcloud in a protected area and streamed from there.
"One of our biggest technical challenges early on was finding a reliable audio player that worked across all browsers," Stefan recalls. "After much testing, we implemented the Soundcloud player, which has served us well."
Their mobile app, which accounts for about 90% of their user engagement, has evolved significantly from its humble beginnings. It now includes features like adjustable music volume, chapter markers, sleep mode, and offline listening capabilities.
Looking to the Future
While firmly committed to their bootstrapped approach, Stefan and his team are now considering the possibility of taking on an investor to accelerate growth further.
"We're in the luxurious position of not needing investment, but we could use it to scale faster," he explains. "With additional funding, we could significantly increase our marketing spend and accelerate our international expansion, particularly into English-speaking markets."
Their focus on product quality and user experience has created a sustainable business that serves language learners from age 8 to 98. As Stefan puts it: "We know exactly what return we get for every euro we spend on marketing now, so with more capital, we could grow much faster while maintaining our core values."
Key Learnings from the Bootstrapping Journey
Stefan's experience with Jicki offers valuable insights for other bootstrapped entrepreneurs:
Financial discipline is crucial - "At the beginning, we had to turn over every euro. That's the downside of bootstrapping—you have to be extremely careful with your resources."
Freedom to experiment is invaluable - "The huge advantage is that we have complete control over our decisions. We can try things, test new approaches, and prioritize what brings us joy without external pressure."
Work-life balance is achievable - "We've evolved from those early 60-hour weeks to a sustainable 35-hour workweek. We've learned that working longer hours doesn't necessarily mean better results—after a certain point, you're just not productive anymore."
"In bootstrapping, you may earn less than you would in a corporate job," Stefan concludes, "but the freedom to build something on your own terms makes it worthwhile."
Happy Bootstrapping is a German podcast where I interview bootstrapped founders, indie hackers, and solopreneurs about their startup journeys. Over the years, I've connected with many successful entrepreneurs who have built e-commerce shops, SaaS platforms, mobile apps, content businesses, or hybrid models.
Furthermore I am a bootstrapper myself and growing my DevOps-as-a-Sercice and Web Operations Company “We Manage”.
Did you enjoy the episode?
Please let me know if you have any questions or feedback - thanks!