Think of the small annoyances in your week: tracking which friend owes you for dinner, picking a restaurant for a group, remembering when to water the plants. For each one there is probably an app, usually bloated, stuffed with ads or locked behind a subscription. A growing number of people are skipping the store and building their own tiny tools instead. They are called micro apps, and they might say something about where software is heading.
What counts as micro apps
Micro apps are small programs each built for one purpose and often for one user or a small circle. One might live as a web page, a phone shortcut or a simple app on a home screen. Micro apps do not need a marketing site, user accounts or a business plan. They just have to do the job.
Examples are everywhere once you start looking: a family chore wheel, a recipe scaler for your most-cooked meals, a dashboard that pulls together your reading list, a page that tells a book club who picks next. The common thread is personal fit. The app is shaped to your exact habits instead of an average user’s.
Why this is happening now
Two things changed. First, AI coding assistants can turn a plain description into working code. You can say what you want, see something run, and ask for changes in ordinary language. For simple tools, this is a leap from “I could never” to “that took an hour.”
Second, the building blocks got friendlier. Hosting is cheap or free for small projects, and many services expose data through simple connections. Spreadsheets, calendars and notes apps can all act as backends. You no longer have to run a server to store a list.
Together these mean that the cost of creating a modest tool has fallen far below the cost of finding, evaluating and paying for a similar one. When building is cheaper than shopping, behavior changes.
When building micro apps beats buying
It is not always the right call. Building makes sense when:
- Your need is narrow and no existing app fits well
- You are annoyed by features you do not use or fees you resent paying
- The data is simple and low-stakes
- You will enjoy making it, or learning from it
- You only need it for a season, such as a wedding or a move
It makes less sense for anything involving payments, health records, children’s data or other sensitive information. Those areas have rules, risks and maintenance burdens that a weekend project is unlikely to meet. A tool you buy from a team that is accountable for security is worth the money.
The hidden cost of micro apps: maintenance
Micro apps are easy to start and surprisingly easy to forget. Software ages. Services change their connections, browsers update, and the clever script you wrote last spring suddenly breaks. If a tool is part of your routine, ask who will fix it. If the answer is “me, eventually,” keep it simple and keep a fallback.
Backups matter too. If one of your micro apps stores real data, such as years of reading notes, make sure you can export it. Plain files and spreadsheets are better than a clever format only your app understands.
What this means for software companies
If anyone can make a simple tool, then simple tools lose pricing power. A company selling a basic tracker or calculator for a monthly fee should expect competition from free, homemade versions. The products that hold up are the ones with something a weekend project cannot replicate: reliable data, integrations, collaboration, support, compliance, or a community.
This is not the end of software as a business. It does shift the value away from basic functionality and toward trust and depth. Expect to see more apps offering ways to customize and extend them, because users now expect to bend things to fit.
How to start building micro apps
Pick something small enough to finish in a day. Write down, in two sentences, what it should do and who it is for. Describe it to an AI assistant, ask it to explain its choices, and run it; this realistic look at building software without writing code sets honest expectations, and what AI coding assistants can and cannot do explains the limits. Test with real inputs, including odd ones like empty fields. Then use it for a week and note what annoys you.
A few safety habits are worth having from the start. Do not paste passwords or secret keys into prompts or public code. Keep personal data out of anything you share. And read, or ask for an explanation of, anything that connects to your accounts.
Where this leaves us
Micro apps will not replace the large apps we depend on. But micro apps are a sign that software is becoming something more people shape rather than just consume, similar to how spreadsheets let non-programmers build tools decades ago. The next time you catch yourself paying for something that does 10 percent of what you need, ask whether you could just make the 10 percent yourself. You may be surprised how often the answer is yes.
