# How much does mobile app maintenance cost?

> A common rule of thumb is to budget 15 to 20 percent of the original build cost per year to maintain a mobile app. That covers OS updates, bug fixes, security patches, hosting, third-party services, and small improvements.

Source: https://keepwarning.com/blog/mobile-app-maintenance-cost/  
Publisher: KeepWarning (Columbia, MD)  
Topic: Mobile app development  
Updated: October 12, 2026

## Key takeaways

- Plan for roughly 15 to 20 percent of build cost per year, as a starting point.
- Maintenance is not optional: new iOS and Android versions can break apps and stores can remove outdated ones.
- Hosting and third-party services usually bill monthly and grow with usage.
- Separate maintenance (keeping it working) from new features (making it better) in your budget.

Launching an app is the start of its costs, not the end. Apps are living software: phones, operating systems, and the services your app depends on all keep changing.

## A simple rule of thumb

Budget **15 to 20 percent of the original build cost each year** for maintenance. An app that cost $120,000 to build might need roughly $18,000 to $24,000 per year to keep healthy. Apps with heavy usage, many integrations, or strict compliance can cost more.

## What maintenance covers

| Area | What it means | Typical frequency |
| --- | --- | --- |
| OS compatibility | Updating for new iOS and Android versions and new devices | Yearly, plus smaller updates |
| Bug fixes | Fixing crashes and issues reported by users or monitoring | Ongoing |
| Security | Patching vulnerable libraries, rotating keys, reviewing access | Ongoing |
| Infrastructure | Servers, databases, storage, email and SMS, maps, analytics | Monthly |
| Store requirements | Meeting new Apple and Google policies and API level rules | Yearly |
| Support | Answering user questions and triaging problems | Ongoing |

## Costs that grow with success

More users means more cloud usage, more storage, and more support requests. Features that call paid APIs, such as maps, messaging, or AI, scale with usage. Review these bills monthly so they do not surprise you.

## Maintenance vs new features

Keep two lines in your budget. **Maintenance** keeps what you have working. **Product development** adds new value. Mixing them hides the true cost of running the app and makes it easy to starve one of them.

## An example maintenance budget

Take an app that cost $120,000 to build and has a few thousand active users. A realistic year might look like this:

| Item | Yearly estimate |
| --- | --- |
| OS and device compatibility updates | $5,000 to $8,000 |
| Bug fixes and small improvements | $6,000 to $10,000 |
| Security patches and dependency updates | $2,000 to $4,000 |
| Cloud hosting and services | $3,000 to $8,000 (grows with usage) |
| Monitoring, crash reporting, support tools | $1,000 to $3,000 |
| Developer accounts | about $125 (check current fees) |
| **Total** | **roughly $17,000 to $33,000** |

That span is 14 to 28 percent of the build cost, which is why "15 to 20 percent" is a useful starting point rather than a promise.

## The yearly rhythm that creates work

Apple typically previews new iOS versions at its developer conference in early summer and ships them in the autumn, and Android has its own yearly cycle. Both stores also raise their technical requirements regularly, such as minimum target versions. Expect a compatibility update each year and set aside time before the autumn releases, because users update quickly and bugs show up fast.

## Warning signs your app is under-maintained

- Crash rate is rising and nobody is looking at crash reports.
- Store reviews mention problems after a recent iOS or Android update.
- Libraries are several major versions behind.
- Only one person knows how to deploy a release.
- You receive warnings from Apple or Google about policy or API levels.
- New features take longer and longer because the code is fragile.

## Choosing a maintenance arrangement

| Option | Best for | Watch out for |
| --- | --- | --- |
| **Monthly care plan** with included hours | Most business apps | Unused hours that expire, unclear scope |
| **Retainer** with a response-time agreement | Apps where downtime costs money | Paying for availability you rarely use |
| **Pay as you go** | Very small or stable apps | Slow response when you urgently need help |
| **In-house team** | Core products with constant change | Hiring and retention cost |

Ask for response times (for example, a critical bug acknowledged within hours), a list of what is included, and how new features are quoted. Pair maintenance with an honest [build budget](/blog/mobile-app-development-cost/) so the whole life of the app is planned.

## How to keep costs predictable

- Ask your development partner for a fixed monthly **care plan** with defined response times.
- Set up crash reporting and monitoring so problems are found before users complain.
- Keep dependencies current with small regular updates instead of large risky upgrades.
- Write down your hosting and service accounts so the app never depends on one person.

For the build side of the budget, read [how much it costs to build a mobile app](/blog/mobile-app-development-cost/).

**Related reading:** Planning the whole timeline and budget? See [how long an app takes to build](/blog/how-long-does-it-take-to-build-a-mobile-app/).

## Frequently asked questions

### Do I have to maintain a mobile app after launch?

Yes. Operating systems, devices, libraries, and store rules change every year. Without maintenance, an app can crash, lose features, or be removed from the stores.

### What does app maintenance include?

Bug fixes, compatibility updates for new iOS and Android versions, security patches, dependency updates, server and cloud costs, monitoring, and customer support.

### Is maintenance cheaper with a cross-platform app?

Often yes, because one codebase means one set of fixes. You still need to test on both platforms after every update.