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Why Most of My Apps Are Free, and One Is Not

July 22, 2026 · Matt Senter

The short version

Most of my apps are free because free is a distribution choice, not generosity: StockCar, Comoji, and Burly are small, self-contained utilities where a price tag is a wall and serving one more user costs me almost nothing. Nobody opens their wallet to learn whether an autocomplete feels right; they try it for thirty seconds and keep it or forget it. Premail is the exception because it keeps working every day, on every message, filtering spam, recruiters, and noise, which is ongoing value with an ongoing cost. It has a free tier, a Pro plan at nine dollars a month, and a lifetime option at ninety-nine dollars. The model works because these apps live under Senternet, where the consulting side funds the patience the products need. Free is not cheap, either: a free app has no billing relationship holding it in place, so it has to be useful enough that you would miss it. The kind of product decides the price, not the other way around.

People sometimes ask why I give so much of my work away. StockCar is free on iOS with no paywall. Comoji is free. Burly is free. And then there is Premail, which has a price.

That is not an accident or a mood. Free is a decision I make on purpose, and so is charging. Here is how I think about which one a product gets.

Why give software away for free?

Free is a distribution choice, not a generosity contest. When I ship a small utility for free, I am not being charitable. I am picking the fastest path to the only thing that matters early on: people actually using the thing. A price tag, even a small one, is a wall. For a tool that lives or dies on whether it fits into someone's day, the cost of that wall is usually higher than any revenue behind it.

Comoji is a good example. It adds colon emoji shortcuts to the apps you already type in. The whole pitch is that it disappears into your flow. Nobody is going to open their wallet to find out whether an autocomplete feels right. They will try it for thirty seconds and either keep it forever or forget it. Free is what lets that thirty seconds happen at all.

The kind of product decides the model, not the other way around

I have come to sort my own work into two rough shapes, and the shape tells me almost everything about pricing.

The first shape is a small, self-contained utility. It does one thing, it runs on your machine, and once you have it, it mostly just works. StockCar, Comoji, and Burly all live here. They cost me real effort to build, but very little to keep serving to one more person. When the marginal cost of another user is close to nothing, charging per user starts to feel like friction for its own sake.

The second shape is a product that keeps working on your behalf, continuously, in a way that carries an ongoing cost and delivers ongoing value. That is where a price stops being friction and starts being fair.

Apple frames subscriptions the same way, aroundongoing value and continued improvementrather than a one-off transaction. That is the right test for whether something should recur.

Why Premail is the one that charges

Premail is a privacy-first email app that filters spam, recruiters, and noise before they reach your inbox. It is not a one-and-done utility. It works every single day, on every message, in the background, quietly deciding what deserves your attention.

That is a different deal than a menu bar helper. The value compounds daily, and so does the work behind it. A product that earns its keep in your life every morning is exactly the kind of thing that should be able to fund its own future, so it can keep getting better instead of quietly rotting. So Premail has tiers:

  • a free tier, so the wall is never the reason someone does not try it
  • a Pro plan at nine dollars a month for people who want the full defense running all the time
  • a lifetime option at ninety-nine dollars for people who would rather pay once and be done

The free tier is there for the same reason all my other apps are free: to let people find out if it fits before anything is asked of them. The paid tiers exist because an inbox defended every day is worth paying for, and because a product I want to still be running in five years needs a reason to still be running in five years.

A studio can afford patience

None of this would work if every product had to pay for itself immediately. It works because these apps live under Senternet, which is part product lab and part consulting shop. The consulting side funds the patience the product side needs.

That structure is a quiet advantage. It means I do not have to slap a price on a tiny utility just to justify the weekend I spent building it. I can let StockCar, Comoji, and Burly be free because they do not have to carry the studio. They can just be good, spread on their own merits, and earn trust. The trust is the asset. It shows up later, in the products where a price makes sense and in the reputation that makes the next launch easier.

Free is not the same as cheap

I want to be careful about one thing. Free does not mean I put less into the free apps. If anything the opposite is true, because a free tool has to be good enough to keep on its own, without a subscription reminding you every month that you paid for it. There is no billing relationship holding a free app in place. It stays on your machine purely because it is worth the space.

So the bar for a free product is not lower. It is higher in a specific way: it has to be so genuinely useful that you would feel the absence if it were gone. That is a harder target than being worth nine dollars, and hitting it is the whole point.

Zero really does behave differently from a low price. Inthe experiments behind “Zero as a Special Price”, demand shifted disproportionately when a cheap product became free. That tells me something about trying a tool; it tells me nothing about whether giving it away is a business.

The questions I actually ask

When I start something new, the pricing question is not the first one, but it is not far behind. A few things I ask before deciding:

  1. Does this do its job once, or does it keep working for you every day?
  2. What does one more user actually cost me to serve?
  3. Would a price help this spread, or is it just a wall in front of a good first impression?
  4. If this has to earn its keep to survive, is the value big enough that charging feels fair rather than grabby?

Most of my utilities answer those questions the same way, which is why most of them are free. Premail answers them differently, which is why it is not. The model is not a branding decision or a growth hack. It is just an honest reading of what the product is and what it is worth. Get that reading right and the price, or the absence of one, mostly picks itself.

Keep reading

  • Why I Built BurlyWhy I built Burly, a macOS link router that sends each link to the right browser profile, and how it compares to Browserosaurus, Choosy, Velja, and Bumpr.
  • Why I Build Small, Local Software That Does One ThingAI makes it cheap to build sprawling apps fast. I keep shipping tiny, single-purpose tools that run locally with no account, on purpose. Here is why.
  • Why I Built StockCarI wanted a podcast about my portfolio, not the market, not someone else's picks. Nothing existed, so I built it.

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Matt Senter

Matt Senter

Founder, entrepreneur, and CEO based in Durham, NC, with 30 years building software and 18 companies and products founded. Currently Founder & CEO of Senternet and Co-Founder, COO, and CTO of BeeReady, and the builder behind Orgabot, Highwire, StockCar, Premail, Comoji, Burly, and Weatherling. More about Matt · Get in touch.

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