"Free" is one of the most expensive words in software. Not because the apps lie — many of them really do cost you nothing at the checkout — but because the price simply moves somewhere you're less likely to look.
A company that gives its product away still has to pay its engineers, its servers, and its investors. The money has to come from somewhere, and if it isn't coming from you at the point of sale, it's usually coming from you in another form: your attention, rented out to advertisers, or your data, packaged and passed along to people you'll never meet.
This is the trade behind most free apps. You get a useful tool. In return, the app watches what you do — what you tap, how long you linger, where you are, who you know — and turns that record into something it can sell. The product isn't really the app. The product is the detailed model of you that the app quietly assembles while you use it.
You can usually tell how an app makes money by asking what it asks for. A simple flashlight app that wants your location, your contacts, and your microphone isn't confused; it's collecting. A free game that needs to know your precise movements throughout the day isn't doing that for the gameplay. The mismatch between what a tool does and what it demands is the tell.
Ads are the milder version of this. Data brokerage is the sharper one. In the first, your attention is sold a few seconds at a time. In the second, a profile of you — your habits, your health, your finances, your relationships — is built up over months and sold to whoever pays. Most people would never agree to that in plain language. The genius of "free" is that the question never gets asked in plain language.
There's a simple test that cuts through most of it: would you still use this app if you could see, in real time, everything it was sending about you? For a lot of free software, the honest answer is no. The discomfort is the information.
This isn't an argument that everything should cost money, or that all free software is predatory. Plenty of it is generous and clean. It's an argument for reading the trade. Free is a price, not the absence of one — and knowing what you're actually paying is the first step to deciding whether it's worth it.
It's also why some tools are built to take as little as possible — to run on your device, keep your information there, and have nothing to sell because nothing ever leaves. That approach costs the maker the easy money. We think it's the trade worth making. See what we're building →