An app that worked perfectly at launch can start crashing, slip down store rankings or even be blocked from updates within a year if nobody looks after it. Phones, operating systems and store rules change constantly, and your app has to keep up.
Mobile app maintenance is the ongoing work that keeps an app secure, compatible and useful after launch. It includes updating for new iOS and Android versions, meeting app store policy and SDK requirements, fixing bugs and crashes, patching security issues, updating third-party libraries, monitoring performance and backend health, and making small improvements based on user feedback.
Why does a finished app need maintenance at all?
A mobile app sits on top of things you do not control: Apple's and Google's operating systems, their app store policies, device manufacturers, third-party SDKs for payments, maps or analytics, and your own servers. Each of these changes on its own schedule. Apple releases a major iOS version every year, Google releases new Android versions, and both stores regularly raise their technical requirements. Without maintenance, an app gradually breaks even if nobody touches its code.
What does mobile app maintenance include?
1. OS compatibility updates
New iOS and Android releases can change permissions, background behaviour, notifications and UI components. Testing against beta versions and releasing compatible updates keeps the app working on new devices from day one.
2. App store compliance
Google Play requires apps to target a recent Android API level, and the required level rises each year; apps that fall behind can be hidden from users on newer devices and cannot publish updates until they comply. Apple periodically requires apps to be built with a recent version of Xcode and the iOS SDK. Both stores also update privacy rules, such as Apple's privacy manifests and Google Play's data safety form, which must be kept accurate.
3. Bug fixes and crash resolution
Crash reporting tools such as Firebase Crashlytics or Sentry show which devices and app versions are affected. Fixing the most common crashes first has an outsized effect on ratings and, on Google Play, on Android vitals.
4. Security patches and dependency updates
Libraries and frameworks (Flutter, React Native, Firebase SDKs, payment SDKs) release fixes for vulnerabilities and deprecate old versions. Keeping them current reduces risk and avoids being forced into a large, painful upgrade later.
5. Backend and API maintenance
Most apps depend on servers, databases and third-party APIs. Maintenance covers server updates, database backups, certificate renewals, monitoring and scaling. Our guide to application monitoring and incident response covers this side in more detail.
6. Performance optimisation
As data and users grow, screens can become slower and battery or data use can creep up. Periodic profiling keeps startup time, scrolling and network usage in good shape.
7. Small improvements
Maintenance often includes minor enhancements based on reviews and analytics: clearer copy, an extra filter, or a smoother onboarding step. These keep users engaged without a full new project.
Types of maintenance
| Type | Purpose | Examples |
|---|---|---|
| Corrective | Fix problems users hit | Crash fixes, broken flows, wrong calculations |
| Adaptive | Keep up with external change | New OS versions, target API level, SDK updates |
| Preventive | Reduce future risk | Dependency upgrades, refactoring, backups, monitoring |
| Perfective | Improve the existing product | Performance tuning, UX tweaks, small features |
Who should handle app maintenance?
Ideally, the team that knows the codebase best, whether that is your in-house developers, the agency that built the app or a specialist support partner. What matters most is clear ownership: someone must be responsible for watching store deadlines, reviewing crash reports and approving updates. If the original developers are no longer available, a new team should begin with an audit of the code, build setup, accounts and infrastructure so that nothing is lost in the handover. Make sure you, as the owner, hold the Apple Developer and Google Play Console accounts, source code repository and server access in your own name.
What happens if you skip maintenance?
- Crashes on new devices and OS versions, leading to poor reviews.
- Lower store visibility, which undermines your app store optimization work.
- Being blocked from releasing updates until the app meets current requirements, often at the worst possible moment.
- Security exposure from outdated libraries.
- A growing backlog that turns into an expensive rebuild.
How much does app maintenance cost?
It depends on the app's complexity, the number of platforms, the size of the backend, how many third-party integrations it has, how quickly you need issues fixed and how many improvements you want each month. A simple content app needs far less ongoing work than a fintech or marketplace app with payments and real-time features. The most predictable approach is a monthly retainer with an agreed number of hours, defined response times for critical issues, and a clear list of what is included. Our article on what a maintenance plan should include lists the questions to ask.
Maintenance checklist
- Crash reporting and analytics installed and reviewed regularly.
- Test plan for each new iOS and Android release.
- Target API level and Xcode or SDK requirements tracked against store deadlines.
- Dependencies reviewed and updated on a schedule.
- Backups, SSL certificates and server patches managed.
- Store listings, privacy details and data safety forms kept accurate.
- A clear process for reporting and prioritising issues.
Key takeaways
- Apps need maintenance because operating systems, store rules and libraries change every year.
- Good maintenance covers compatibility, compliance, crashes, security, backend health and small improvements.
- A retainer with defined response times is the most predictable way to budget for it.
AppifyDevs looks after live apps on iOS and Android, including apps we did not originally build. Request a quote for maintenance and support or contact us for an audit of your current app.