Quick answer
Launching an app is not the end of the investment. It’s the beginning of another one.
Maintenance is everything it takes to keep your product working after day one. And it’s not a minor cost: in most projects, accumulated maintenance surpasses the original development cost within the first three years.
What people think maintenance means (and what it actually includes)
When someone says “maintenance,” they usually think about fixing things when they break. That’s only part of it.
App maintenance covers four areas:
1. Security Vulnerabilities appear constantly in the components and tools your app relies on. If you don’t patch them, your product is exposed. This isn’t theoretical: most successful attacks exploit known vulnerabilities that simply weren’t updated.
2. Compatibility Apple and Google update iOS and Android multiple times a year. Browsers too. Each update can break features that worked perfectly before. Without active maintenance, your app starts failing on newer devices and eventually gets removed from the stores.
3. Bug fixes No matter how much testing happens before launch, real usage always surfaces problems that didn’t show up in testing. Users have different devices, different connections, and do things nobody anticipated. Those bugs need ongoing attention.
4. Performance and infrastructure Databases grow, traffic fluctuates, servers need adjustments. If nobody is monitoring the infrastructure, the first month with a traffic spike can bring the service down exactly when you need it most.
What happens if you skip maintenance
Skipping maintenance isn’t free. It’s paying more later, with interest.
Here’s what happens in practice:
- At 6 months: bugs start appearing that users report informally. Performance drops slightly, nobody notices formally.
- At 1 year: an iOS or Android update breaks something visible. You have to patch urgently, which always costs more than anticipating it would have.
- At 2 years: the codebase has accumulated so much pending work that catching up becomes a project in itself. What used to be routine maintenance now requires its own planning and budget.
- At 3 years: the cost of bringing the product up to date can approach or exceed the original development cost. In some cases, it’s cheaper to rewrite than to update.
Like financial debt, this backlog accumulates with interest. And the longer you wait, the bigger the bill.
How much does maintenance cost
The industry rule of thumb is between 15% and 25% of the development cost per year.
If your app cost USD 20,000 to build, reasonable maintenance runs between USD 3,000 and USD 5,000 annually. That range covers security updates, bug fixes, basic monitoring, and compatibility with new operating system versions.
The number varies based on:
- System complexity: more integrations with external services means more potential points of failure
- How often target platforms change: mobile apps require more maintenance than web apps because iOS and Android update more aggressively
- Traffic and scale: an app with 100 active users needs less infrastructure than one with 10,000
The important thing is to work this number into the project budget from the start — not discover it as a surprise after launch.
Maintenance vs. product evolution
It’s useful to separate two things that often get mixed up:
Maintenance is keeping what already exists working correctly. It doesn’t add new features. It’s the digital equivalent of changing the oil in your car.
Product evolution is adding new features, redesigning sections, incorporating user feedback. That’s new development and has its own cost.
Both are necessary, but mixing them without clarity creates confusion about what’s being paid for and what’s being received. When you hire someone to maintain an app, it’s important to agree upfront on what falls inside that agreement and what gets quoted separately.
Signs your app needs attention now
If you recognize any of these situations, maintenance is already urgent:
- Users are reporting bugs you can’t reproduce on your own device
- The app had trouble getting through the last App Store or Google Play update
- There’s no clear record of what’s powering the project or who has access to what
- Nobody is monitoring whether the server is down
- The original developer is no longer available and nobody has full access to the code
None of these situations improve on their own over time.
How to plan for it from the start
If you’re about to commission an app, these are the questions to ask before signing anything:
Who will maintain this after launch? What does maintenance include and what doesn’t it include? How is server access, credentials, and the overall setup documented? How often are security updates applied?
If the developer or agency doesn’t have clear answers to these questions, that’s a warning sign.
How I handle it
With every project I develop, maintenance is part of the conversation from the beginning. Before writing a single line of code, we agree on who’s responsible for what after launch, what’s covered in the maintenance agreement, and how an emergency is handled if something goes down on a Sunday.
If you have an app running and you’re not sure what technical shape it’s in, I can do a review and give you an honest assessment. Get in touch and let’s talk.