Solo Developer

A solo developer is a person who builds an entire software product entirely on their own. Software here means anything that runs on a computer or phone: an app, a website, a game. The term is English and literally means “lone developer.” What matters is not that someone programs alone, but that a single person also handles everything else: design, marketing, invoicing, customer questions. Some do this as an evening hobby, others make a full-time living from it. The main difference from a classic startup is that no one is hired and, in most cases, no outside money is involved.

Why individuals can suddenly pull off entire products

Twenty years ago, running an internet application required your own servers – large computers sitting in a data center. You had to buy them, set them up, and maintain them. Today you rent computing power over the internet and pay only for what you use. For payments, sign-up, or sending emails, there are ready-made services that can be integrated in a few hours.

On top of that, there are AI assistants that suggest code and explain errors. They don’t replace an experienced developer, but they take a lot of routine work off your hands. This lets a solo developer venture into areas where they are only mediocre themselves – such as graphics or ad copy. The gap between a single person and a small team has thus become smaller.

Economically, this is interesting because costs stay tiny. Anyone who pays no salaries doesn’t need millions in revenue. A product with a few hundred paying users can already support a full income. Investors often dismiss this as “too small” – but for the person involved, it’s still a livelihood.

The daily work between code and customer emails

Typically, everything starts with a problem the developer has themselves. They build a quick, unfinished version and show it publicly, often on a platform like Reddit or X. The next stage of development grows out of the reactions. This approach is called “building in public”: progress isn’t kept secret but is used as marketing.

The biggest difference from a regular job is how time is distributed. Programming often makes up less than half the work. The rest is support requests, tax paperwork, server issues at three in the morning, and the constant effort of simply getting noticed at all. Many solo developers don’t fail because of the technology, but because nobody finds out about their product.

A common misconception is that a solo developer is simply a freelancer. A freelancer works for an hourly wage for outside clients and earns nothing when sick. A solo developer owns their product and keeps earning even when they aren’t currently working. In exchange, they bear the full risk that no one buys it.

Well-known one-person products and the downsides

You encounter solo developers more often than you’d think. Many apps in phone app stores, small browser extensions, and tools for developers come from individuals. Well-known examples include note-taking apps, photo apps, or invoicing tools, behind which stands exactly one name. In tech news, they usually appear alongside headlines about their monthly revenue.

Such figures should be read with caution. What gets reported are the few success stories, not the many projects that get shut down after six months. Revenue is also not profit: servers, fees, and taxes are deducted from it. The road to that point often takes years.

For users, a one-person product has two sides. Response to requests is fast, since no department has to make decisions. But if the person becomes unavailable, the product grinds to a halt. That’s why companies often check, before adopting a tool, whether it comes from a company or from a single individual.