One-time-purchase GTD apps: the sum nobody does

What people are actually searching for

“One-time payment GTD app” is one of those searches that says more than it asks. The person typing it rarely holds a firm view on business models. What they hold is a specific experience: four or five small fees charging themselves every month, on different dates, with nobody deciding anything; and an organisation app that, if it stops, takes the whole system down with it.

Those are two different fears, and it is worth separating them, because only one of them is fixed by paying once.

The first is the drip: not wanting one more subscription. That is a question about a total, and it is answered by looking at the total.

The second is the hostage: not wanting a failed charge to lock you out of your own inventory of commitments. That one isn’t about the business model at all. It is about where your data lives. There are paid-once apps that keep everything on their server, and subscriptions with no server whatsoever. The model tells you nothing; the architecture tells you everything.

What a paid-once GTD app costs today

The well-made ones run between €45 and €80, and that price is usually per platform. Setting the system up on iPhone, iPad and Mac can pass a hundred euros in one go.

That isn’t gouging. It is the arithmetic of the model: if you only charge once, that once has to fund the years ahead, which is why the opening number is high. The buyer pays up front for maintenance that hasn’t happened yet.

The ten-year sum

This is the comparison almost nobody runs, because it forces you to pick a horizon. Take ten years, which is roughly how long an organisation system lasts when it works.

• A €45 one-time purchase: €45. A €4.99-a-year subscription reaches that figure around year nine.
• An €80 one-time purchase: €80. The same subscription takes over fifteen years to match it.
• €45 per platform across three devices: €135, and the cheap subscription doesn’t catch it this decade or the next.

Now the uncomfortable part. Almost no paid-once app is still paid-once ten years later. The normal pattern is a paid major version every two or three years, sometimes discounted for existing buyers. If that happens three times in a decade, the real one-time payment wasn’t €45 but well over a hundred — with the added uncertainty of not knowing when the next one lands.

The conclusion isn’t that paying once is a scam. It is that “one payment” describes the first transaction, not the cost of the system.

What a single payment does not buy

An app isn’t a finished object. It is something that has to be kept alive against an operating system that moves every year: new screens, new permissions, features withdrawn, a language that keeps evolving, new hardware every September.

That work is paid for every year, and a one-time payment funds it for exactly zero. Hence the two classic exits: ship a new app every two years — a subscription with a worse name and a manual migration — or stop maintaining it.

The second is the one that really hurts. An abandoned task app doesn’t break on the day it is abandoned. It breaks two autumns later, on an OS update, once you have six years of projects inside it.

When paying once is the right call

There are clear cases, and it’s only fair to name them.

If the app does one bounded thing that isn’t going to change — a calculator, a converter, a small utility — paying once fits perfectly: there is no continuous maintenance to fund because there is no moving surface.

If you need certainty that the expense doesn’t repeat, for budget reasons or on principle, that is a legitimate reason and it doesn’t need a spreadsheet to justify it.

And if the app is paid-once and keeps your data on your device in an open format, you have the best of both: even if it gets abandoned, your data outlives it.

Where paying once becomes a bad buy is the opposite case: a large app with its own sync, promising to maintain itself forever on what you paid it one afternoon in 2021.

The five questions that actually discriminate

They apply to any GTD app, paid once or subscribed, ours included.

1. Where does my data live? On my device and in my account, or in the vendor’s database. This is the question that decides whether anyone can hold you hostage.
2. What exactly happens if I stop paying, or if the app is abandoned? Read-only? Locked? Exportable? Into a format that works somewhere else?
3. How much of what I pay is infrastructure I use? If there is no web version, no collaboration and no account of its own, the honest answer is “almost none”, and that should show up in the price.
4. How long is the trial, and does it stretch far enough to include a bad week? An organisation system is judged when the week goes wrong, and that doesn’t happen in seven days.
5. Can the price sustain the app for ten years? Neither a one-time payment that funds zero years, nor an unsustainably low fee propped up by investor money.

If an app answers the first two well, the payment model stops being the risk it looked like.

Where Olena sits

Olena is not a one-time purchase, and we’re not going to pretend otherwise. It is a subscription at €4.99 a year, with a full year of the complete product before you pay anything.

What it does do is remove both reasons people go looking for paid-once in the first place.

The number. At that price, a decade of Olena costs less than many “buy it forever” purchases for a single platform — and Olena’s covers iPhone, iPad and Mac. There is no paid upgrade every two years, because there are no versions to sell: there is one app, kept current.

The hostage. There is no Olena server, so there is nowhere to be locked out of. Your data lives on your device and in your private iCloud container, and if the subscription lapses the app drops to read-only: you still see everything, and you can export the lot to a dated .json. The details are in the guide on how it works without servers.

And we can charge that little precisely because of that: with no servers there is no monthly bill pushing the price up. The full arithmetic is in the guide on productivity subscriptions.

If after all that you still want a one-time purchase, that is a perfectly reasonable preference and there are apps on the market that serve it well. It is just worth making the decision with the ten-year sum in front of you, rather than the first afternoon’s.