Walking away from venture capital
Martin Donadieu's GitHub bio reads like a manifesto: "I create my freedom by making open-source SaaS in solo without fundraising." It wasn't always the plan. Donadieu, a French software engineer, co-founded the startup Naas in 2019 and served as a CTO in the venture-backed world — until July 2021, when he walked away. His reason, stated plainly on the BuildingNow podcast: raising VC money made him care more about investors than customers. So he left, moved to Madeira, Portugal, and decided to build alone.
Before Capgo there was Captime, a CrossFit timer mobile app he'd built as a side project around 2017 and rebooted during COVID. It made roughly $400 a month — small, but it taught him the Capacitor ecosystem from the inside. It was also the app that created Capgo. In December 2021, while rebuilding Captime from scratch, he hit a production bug and needed to push a code fix without a full app-store release. The existing options were all bad: Ionic's Appflow was priced for teams, not solo devs ("not the best price for you"); Microsoft had just shut down Cordova/Capacitor support in App Center; and when he contacted Ionic about pricing, "they weren't open to change the pricing, I wasn't the target."
So he built it himself. After one month of work — learning native iOS and Android code, which was new to him — he had a working updater that could download a zip from a URL and swap the app's source. He shared it, and the response was immediate: "huge interest on GitHub." The manual solution was too much for most teams, so they started asking for a paid service. "That was where I started to work on Capgo as AppFlow alternative."
Open source as a growth engine
Capgo's positioning is explicit: the affordable, open-source alternative to Ionic Appflow. The updater plugin is MIT-licensed, the console and backend are AGPL — users can self-host for free or pay for Capgo Cloud. The plugin repo became the most-starred Capacitor plugin on GitHub, and the README claims 3,000+ production apps with proven reliability. Capgo's own blog cites an 82% worldwide update success rate, with 95% of users receiving updates within 24 hours.
But the open-source strategy goes far deeper than one repo. Donadieu maintains 150+ open-source Capacitor plugins — a staggering output for one person — and they function as a distribution engine. Every plugin is a doorway: developers find a free plugin, trust the quality, and discover Capgo when they need managed updates. It's content marketing where the content is code. One user's testimonial, quoted on Capgo's blog, captures the dynamic: "Jumped over to @Capgo after @AppFlow hit us with a $5000 bill for the year to continue." Even a NASA OSIRIS-REx team member praised it publicly.
The early growth playbook was pure community, not marketing. Donadieu answered a much-debated GitHub issue — a Capacitor hot-code-push request filed back in July 2020 with 65+ likes — shared his progress on Twitter and Reddit, and ran a Discord server for direct feedback. By December 2022, five months into monetization, Capgo was at $700 MRR. By early 2025, around $7.8K a month. By 2026, over $25K MRR per the BuildingNow episode, with his IndiePage dashboard showing $27.6k a month across projects.
Stuck at $3k — and the blunt feedback that fixed it
The BuildingNow episode is unusually honest about the middle years. Donadieu got stuck at $3K MRR, and the turning point was blunt feedback on his SEO — the kind of criticism that's hard to hear and impossible to unhear. He also describes a non-technical onboarding test with his wife that unlocked conversion: watching a non-developer try to use the product exposed every assumption he'd baked in. For a solo founder with no team to challenge him, these external feedback loops — the podcast circuit, the Discord community, his own "Solos" podcast where he interviews other solo makers — function as the co-founders he chose not to have.
He calls the podcast his "entrepreneurship MBA" and building in public his only moat against copycats. When your code is open source, anyone can fork it — but they can't fork the trust, the community, and the 150 plugins. That's the real defensibility: not the code, but the ecosystem around it.
What solo looks like at $31K MRR
Capgo today is still one founder, still profitable, still unfunded. The tagline on GitHub: "Capgo is the Expo for Capacitor, providing SDKs, plugins, cloud updates, and native builds for any web framework." The business model is tiered SaaS — free self-hosted workflow plus managed cloud subscriptions, starting around $15 a month in the early days, with a 14-day free trial and no credit card required.
The arc from $400-a-month side project to ~$31K MRR took four years, and every step was funded by customers. No pitch decks, no board meetings, no investor updates. Just a French engineer in Madeira, answering GitHub issues and shipping plugins, who decided that caring about customers was more interesting than caring about investors.
The playbook
- Scratch your own expensive itch — Capgo exists because Appflow was too pricey for a solo dev's $400/month app. The best B2B products are built by their first angry customer.
- Open source as distribution — 150+ free plugins are 150+ funnels. When the product is the marketing, every repo is an ad that never stops running.
- Answer the community's oldest questions — A 2020 GitHub issue with 65+ likes became Capgo's launchpad. Find where your users are already begging for a solution.
- Use blunt feedback as fuel — Getting stuck at $3K MRR and hearing hard truths about SEO was the turning point, not a setback. Solo founders need external mirrors.
- Make "no fundraising" the strategy — Every dollar from customers instead of investors kept the focus on the product. Freedom was the business model.