App maintenance cost, what to budget each year

What is the app maintenance cost after launch? A reasonable rule of thumb is 15 to 20 percent of the original build cost per year, so an app that cost $50,000 to build runs roughly $7,500 to $10,000 a year to keep healthy. That app maintenance cost covers keeping the app working as the platforms change, fixing issues that surface with real use, hosting, and small improvements. The figure rises if you are actively adding features and falls for a stable app that just needs to keep running, but the one figure that never works is zero, because an app is a product you run, not a thing you build once and forget.

The figure is simple; what sits behind it is less obvious. This page explains what maintenance actually pays for, why skipping it costs more, and how the quality of the original build shapes the bill.

Why an app is never build-once

The idea that catches people out is that an app is finished when it launches, when in truth launch is the start of its working life, not the end. An app lives in a world that keeps moving: Apple and Google release a major operating-system version every year, devices change, the libraries and services your app depends on get updated, and security issues are discovered and need patching. An app that is not kept up with that movement does not stay still, it slowly breaks, because the ground it stands on shifts underneath it. Maintenance is the work of keeping the app current with that changing world, which is why it is ongoing rather than optional.

This is genuinely different from how people think about a website or a one-off purchase, and the difference is the source of most maintenance surprises. A business that budgets for the build and nothing else is planning for a poster, something you print once, when what it actually has is a product, something you operate. We are upfront about this from the start because a client who understands that an app needs running costs makes better decisions, both about the build and about the budget, than one who discovers it after launch when the first compatibility problem arrives. The app maintenance cost is not a surprise bolted on later; it is a known, plannable part of owning an app, and the businesses that treat it that way avoid the nasty version of the lesson.

What the money actually pays for

Maintenance can sound vague, so it helps to be concrete about where the money goes, because it is all real work rather than padding. A meaningful share goes to keeping the app compatible as the platforms change, since each yearly iOS and Android release can break things that worked before and need adjusting. Another part covers updating the libraries and external services the app relies on, which release their own changes and security fixes. Then there is fixing the bugs that only surface once real people use the app in ways no test anticipated, covering hosting and any third-party services the app pays for, and making the small improvements that keep the app useful rather than stagnant.

None of that is idle spending, and an app that goes without it does not save the money so much as defer the consequences. Our app maintenance and support page covers how we structure this ongoing work, but the principle is the same however it is arranged: a living app needs steady attention to keep functioning, stay secure and remain pleasant to use. The 15 to 20 percent figure is simply the rough annual cost of that attention for a typical app, and it flexes with how active the app is, more when you are adding features and pushing the product forward, less when it is stable and you are mainly keeping the lights on. What it should never be is nothing, because nothing is not actually an option, only a delay.

Skipping it costs more, not less

The tempting move, once an app is built and the big spend is behind you, is to skip maintenance and save the annual cost, and it is worth being blunt that this almost always costs more in the end. An unmaintained app does not freeze in a working state; it decays. Operating-system changes gradually break features, unpatched security issues accumulate into real risk, small problems that would have been quick fixes pile up into big ones, and eventually the app reaches a point where it needs an expensive rescue or a full rebuild to bring back to life. The money you saved by skipping maintenance is spent several times over fixing the mess that neglect created.

So skipping maintenance does not remove the cost, it defers and inflates it, trading a modest steady spend for a large unpredictable one later. The cheapest way to run an app over its life is consistent, moderate upkeep that keeps it healthy, exactly as regular servicing is cheaper than running a vehicle until it fails. When an app has been neglected to the point of needing serious work, our app modernisation page covers bringing an ageing app back up to date, but the far better path is never to let it get there. A small annual maintenance budget is one of the better investments an app owner makes, precisely because it prevents the expensive crisis that neglect reliably produces.

How build quality shapes the bill

A factor people rarely connect to maintenance is the quality of the original build, yet it is one of the biggest influences on what the app costs to run each year. Clean, well-structured code is cheaper to update, adapts more easily as the platforms change, and breaks less often, so a well-built app absorbs each year's changes with modest effort. A poorly built app, frequently the product of the cheapest possible upfront quote, is the opposite: every change is harder, more things go wrong with each platform update, and the annual maintenance cost runs higher year after year as a result.

This is one of the clearest reasons the lowest upfront price is so often the highest total cost, because the corner-cutting that makes a build cheap is paid back, with interest, across years of expensive maintenance. A business that pays a fair price for a soundly built app spends less keeping it running than one that saved upfront on a fragile build, and over the life of the app that difference can dwarf the original saving. The general cost picture on our cost to build an app in Australia page is built around this whole-life view rather than the headline build figure alone. If you would like a realistic maintenance budget for your app, or for one you are planning, tell us what it does and roughly what it cost or will cost to build, and we will give you an honest annual figure to plan around.