Bugfender

Jordi Giménez first encountered the core problem behind Bugfender in 2011 while building an Android app to check his prepaid SIM card balance. When the mobile operator didn't provide an official app, he built one using web scraping—and it grew to over 20,000 users within months. But routine website changes from the carrier would break his app. His solution: a small web service to capture what his app was seeing so he could diagnose errors remotely. "This was the very first version of Bugfender," he recalls, though at the time it was just a hack, not a business idea.

Years later, Jordi co-founded Mobile Jazz, a mobile app consulting agency, with Stefan. In 2015, a colleague named Aleix ran into the same debugging problem on a client project. A beta tester reported the app didn't work—but it worked perfectly in-house. With no visibility into the user's device or the external server, they were stuck. Over a weekend, Aleix built the same solution Jordi had created years earlier. "I was shocked," Jordi says. "Faced with the same problem, we both had come up with the same solution. This confirmed to me that we were on to something."

The three founders—Jordi, Stefan, and Aleix—decided to formalize the idea. They built a proper version using Go and MySQL, though the initial code was crude: just a single class that sent logs to a dumb server storing whatever arrived. They enabled remote log collection in all app builds but toggled it on only when problems appeared. "Even if crude, it was helping us already!" Jordi notes.

After 5 months of internal use at Mobile Jazz, the pattern became undeniable: every mobile development project faced the same blind spot. Mobile debugging is uniquely hard—unlike web or desktop, you can't SSH into a user's device or check server logs. Device fragmentation compounds the problem: something working on your test phone might break on a user's different hardware. "In mobile, sometimes applications operate without a server, maybe they interact with servers not under your control, or maybe they interact with Bluetooth or Wifi-enabled devices, so you have no way to know what could be happening."

They launched with a simple website and "request an invitation" form. Early promotion on developer forums and Twitter yielded few responses, so they manually created accounts from a database—no proper registration system yet. After 4 months, they added a payment process, but adoption remained slow. It took another 6 months to land their first paying customer at €19/month. "Those times were a little hard, but we were full of enthusiasm. When the moment arrived, we celebrated. A paid user meant we were not completely stupid, we were building something someone wanted."

Once charging began, the founders faced real questions: What's your privacy policy? Terms of service? Are logs encrypted? (Yes.) Had they found product-market fit? Money wasn't pouring in—this was clearly a niche product. The emotional stakes rose as they contemplated incorporating a company, building metering and billing logic, and calculating EU VAT across invoices. Weeks before receiving an EU grant of €100,000, Jordi was discussing abandoning ship entirely.

Three things kept them going. First, direct user chat proved invaluable. They could address concerns in real time, increase retention, and learn exactly what users needed. Second, an EU grant provided validation and capital—no longer did they need to bootstrap entirely from their own pockets. Third, the feedback loop worked: they learned their value proposition was unclear to outsiders. "After 3 years of operation, I still find people who do not 'get' what we do," Jordi admits. "This does not mean they are dumb, it means I cannot explain it properly."

Their organic growth strategy eventually crystallized. A mentor pushed them toward content marketing and SEO. Engineers typically avoid writing, but Jordi and team committed to keyword research, selecting the top 20 high-impact keywords and publishing content around them. The effort paid off: within months, they ranked first or on page one of Google for many searches. "This helped our growth a great deal because for the first time we had a significant amount of organic traffic coming to our site."

Other channels flopped spectacularly. AdWords, Facebook ads, LinkedIn ads, Twitter ads—despite methodical setup, testing, and pivoting, they consistently spent more acquiring users than they earned in revenue. "I would say it was worth trying but I would recommend bootstrapped companies try other things first and be very conservative with ad spending." Facebook retargeting worked better, targeting site visitors rather than broad audiences. A Dropbox-style referral program with promo codes failed; customers were happy but unmotivated to evangelize. Social media engagement (Twitter, Facebook, LinkedIn) proved too noisy and time-consuming, though recent Twitter activity showed promise among developers.

By the interview date in February 2019, Bugfender had grown to 165 paying customers, with over 9,000 apps using the platform across 46 million devices. Revenue had climbed to €9,100/month MRR (approximately $11,000 USD). The team had expanded from 3 to 9 people, many part-time, all distributed across Europe.

Bugfender remains bootstrapped and near break-even, though the founders work for free—unable to pay themselves salaries yet because profits are reinvested in growth. They split time between Bugfender and Mobile Jazz consulting to cover living expenses. "It is not ideal but it is working, though it has been extremely difficult."

Jordi's key regrets reflect hard-won wisdom. He would hire a marketing specialist from day one instead of underestimating marketing effort. He would talk to customers before building anything—a lesson reinforced by PlayThis, a collaborative party playlist app they'd built for months with zero sales. He would choose mainstream tech stacks (Node.js, Python) over bleeding-edge Go, saving thousands in hardware costs from performance issues. Early library choices haunted them: migrating from the slow Martini web framework to Go's native HTTP library alone delivered a 10x speed boost.

Looking forward, Bugfender embodies the bootstrapper's paradox: capital constraints breed discipline and frugality, yet slow growth and the founder tax of "working for free" strains morale. Still, Jordi's message to fellow founders is clear: validate before building, embrace content marketing over paid ads, talk obsessively to customers, and never underestimate how long true product-market fit takes to achieve.