How much does app maintenance cost after launch? What to budget each year

The day your app goes live feels like the finish line. It is actually the starting line. From that day, real people on real phones begin using your product, and the world around it keeps changing: new Android and iOS versions arrive, servers age, libraries release security fixes, and users ask for things you did not think of.

Many founders budget carefully for building the app and forget this part. This guide explains what maintenance includes, how to estimate it, and how to avoid surprise bills.

Why apps need maintenance at all

Software is not like a printed book. It sits on top of other software that keeps changing:

• Operating systems update every year. Apple and Google release new versions of iOS and Android, and old behaviour can break or be deprecated.
• The stores change their rules. New privacy, permission and target-version requirements can stop updates from being accepted unless you comply.
• Libraries and frameworks release security fixes. Leaving known vulnerabilities in place is a real risk.
• Servers and databases need care. Storage grows, performance changes and certificates expire.
• Third-party services change. Payment gateways, SMS providers and map services update their APIs and prices.
• Users behave in surprising ways. Real usage reveals bugs and ideas no test found.

An app that is not maintained does not stay as it was. It slowly gets worse, then suddenly stops working for some users.

What a maintenance plan usually includes

1. Bug fixes

Fixing problems found by users or monitoring, with a clear response time based on severity.

2. OS and device compatibility

Testing and updating the app for new iOS and Android versions and popular devices before users are affected.

3. Security updates

Updating dependencies and servers, reviewing access and fixing vulnerabilities. See our security checklist.

4. Hosting and infrastructure

Server, database, storage, backups and monitoring. This is often a separate monthly bill from the cloud provider.

5. Monitoring and performance

Crash reports, error tracking and speed checks, so issues are found before users complain.

6. Small improvements

Minor changes such as text, layout tweaks and small features, often covered by a monthly allowance of hours.

7. New features

Larger additions are usually planned and priced as separate projects rather than part of maintenance.

How much should you budget?

A widely used rule of thumb in the industry is to set aside roughly 15 to 20 percent of the original build cost per year for maintenance, and to treat new features as additional. This is a planning guide, not a rule. The right number depends on your app.

What raises the cost	What keeps it low
Many integrations (payments, maps, SMS, third-party APIs)	Few, well-chosen integrations
Both iOS and Android native apps	One cross-platform codebase
Heavy real-time features and large data	Simple, stable features
Large user base needing fast support	Small base with a clear support process
Regulated data (health, finance)	Light data with careful scope
Poor documentation and messy code	Clean, documented code

On top of the team's time, plan separate running costs: cloud hosting, database, push notification and SMS services, map usage, payment gateway fees, analytics and developer accounts (Apple charges a yearly fee, Google a one-time fee). These grow with your users.

Common ways to pay for maintenance

• Monthly retainer. A fixed fee for a set number of hours and a response-time promise. Predictable and popular.
• Annual maintenance contract. A yearly agreement, sometimes with a discount for paying in advance.
• Pay as you go. You pay for hours used. Flexible, but slower response and surprise bills are possible.
• In-house developer. Best when the app is central to your business and you have enough work for a full-time person.

What to ask before you sign a maintenance agreement

1. What exactly is included, and what counts as a new feature?
2. What are the response times for urgent and normal issues?
3. Who pays for hosting and third-party services, and who owns those accounts?
4. How are backups handled, and have restores been tested?
5. Will you receive monthly reports on crashes, uptime and updates?
6. Can you take the code and accounts and leave if you want to?

Signs your app is being neglected

• Crashes on newer Android or iOS versions.
• Store warnings about outdated target versions.
• Slow screens that used to be fast.
• Rising complaints about the same issue.
• Nobody knows when the server was last updated or backed up.

Frequently asked questions

Can I skip maintenance for the first few months?

The first weeks after launch are when most bugs surface, so that is when you need support most. Include at least a short, covered support period in your launch plan.

Is maintenance cheaper if I keep the app simple?

Yes. Fewer features, fewer integrations and clean code all reduce ongoing effort. This is one more reason to start with a focused first version. See how to plan an MVP.

Do I pay again for every OS update?

Under a proper maintenance plan, compatibility updates are normally included. Check the contract.

Plan for it from day one

The cheapest maintenance is the one you planned. When we build an app, we agree the support plan before launch, so you know what ongoing care will look like. Learn about our mobile app development process, check what building an app costs, or talk to us about supporting an app you already have.