Mobile app maintenance cost is the work and services needed to keep an existing app usable, supportable and ready for its next release. Budget from that workload: recurring fixes and monitoring, planned compatibility work, release verification and the services the app consumes. The original development price alone cannot tell you how much of each your app needs.
This guide builds a fictional first-year budget for a React Native app with iOS and Android releases and one backend. With 180 assumed labor hours at USD 40/hour and an assumed USD 150/month service allowance, the planned total is USD 9,000. A separate 24-hour contingency brings the planning envelope to USD 9,960. These are replaceable assumptions, not MUBBITS prices, an industry benchmark or a promise that your app can be maintained within that amount.
Owners in the USA, UK, Canada and Australia can use the same worksheet. All example amounts are USD. Obtain an actual quote in your invoice currency, including GBP, CAD or AUD where applicable, and identify separately charged services and taxes.
Key takeaways
- Separate maintaining existing behavior from new features and inherited catch-up work.
- Build an annual workload instead of multiplying an unexplained monthly fee by twelve.
- Keep planned work, usage bills, store/account fees and contingency distinct.
- A shared React Native codebase still needs iOS and Android release checks.
- Agree access, incident ownership and a reproducible build before a support handover.
Agree what maintenance means for this app
Consider a hypothetical coaching app with accounts, paid access, workout content and a small admin backend. Fixing a crash that prevents an existing workout from opening is maintenance. Adding a new meal-planning product is a feature. Repairing a build pipeline nobody can reproduce is takeover work that should be assessed before promising a routine monthly service.
A warranty or defect-correction period is another separate question. Its terms may cover an agreed delivery failing its acceptance conditions; that does not automatically fund future operating-system changes or any new request the owner calls a bug. Put the distinction in writing and agree who decides when a report crosses those boundaries.
Use the table to classify the backlog before asking for a support price. Otherwise two suppliers may offer the same monthly fee while taking responsibility for very different work.
| Request | Budget discussion | Evidence to ask for |
|---|---|---|
| Existing screen crashes | Defect correction or ongoing maintenance, according to the agreement | Reproduction, fix and affected-device verification |
| Store or SDK requirement changes | Planned compatibility work | Affected versions, new build and submission plan |
| Owner wants a new booking feature | Separately scoped product development | New acceptance conditions and estimate |
| Source cannot produce the live app | Initial investigation and catch-up scope | A reproducible build and an explained version gap |
Build a first-year budget from explicit hours
For the fictional app, assume ten hours a month for issue triage, contained fixes and routine dependency review. Reserve 36 additional hours across the year for planned compatibility work, plus 24 hours for six release-verification sessions. The allocation is 180 hours in total. It does not include building new features or rescuing an app with an unknown maintenance backlog.
At an assumed USD 40/hour, planned labor is USD 7,200. Add an assumed USD 150/month for backend, storage, monitoring and build services: USD 1,800 a year. The result is USD 9,000 before contingency. Add a separately chosen 24-hour reserve, worth USD 960 at the same assumed rate, for a USD 9,960 planning envelope. A reserve is not automatically a fee that should be spent.
That envelope averages USD 830/month, but it is not a quoted USD 830 monthly retainer. Compatibility work and releases may create uneven invoices. Store account charges, transaction fees, taxes, internal customer support and new feature development remain outside this example and need their own lines. Replace the assumed service allowance with actual workload estimates and invoices.
| Budget line | Assumption | Annual amount |
|---|---|---|
| Routine issue handling and contained fixes | 10 hours × 12 months | USD 4,800 |
| Planned compatibility work | 36 hours over the year | USD 1,440 |
| Release verification | 6 sessions × 4 hours | USD 960 |
| Planned labor subtotal | 180 hours × USD 40 | USD 7,200 |
| Operating services | Assumed USD 150 × 12 | USD 1,800 |
| Planned annual total | Labor + operating services | USD 9,000 |
| Separate contingency reserve | 24 assumed hours × USD 40 | USD 960 |
| Planning envelope | Planned total + reserve; not a fixed quote | USD 9,960 |
Find double counting and the costs that change the estimate
In this example, routine fixes exclude the compatibility project and the six release-verification sessions. If your supplier already includes those activities in a monthly allowance, do not add them again. Ask what happens to unused hours, which work receives priority and whether a large upgrade consumes the same allowance as user-reported defects.
Change one assumption at a time. Increasing routine effort from ten to sixteen hours a month adds 72 hours a year, or USD 2,880 at the example rate. Increasing the operating-services allowance from USD 150 to USD 300/month adds USD 1,800 a year. Either change may be justified, but the explanation should identify the workload behind it.
The largest uncertainty may be the starting condition. An old framework version, undocumented native changes or an unsupported integration can require a distinct catch-up phase. A percentage of the original build price will not reveal that backlog. Request an initial assessment with bounded investigation work and a decision on what belongs in routine support.
Hosting follows usage as well as the app's screen count. Record the drivers that matter: stored media, downloads, database activity, messages, maps or AI calls. Verify vendor billing and applicable store/account charges directly. A quiet app with a large content library and a busy text-only app can have different operating bills.
Put platform requirements on a release calendar
Apple publishes submission requirements for the tools and SDKs used to upload apps. Those build requirements are different from the oldest device operating system your app supports. Keep both in the inventory; changing a deployment target without understanding current users is not a substitute for planning an upgrade.
Google Play separately describes requirements for new submissions and updates, and availability rules for existing apps. Device categories and extensions can differ. Review the current policy and your app's actual Play Console notices before setting the work and deadline. Do not assume every app is removed on one universal date.
Assign an owner to check platform notices, framework releases and critical integration changes. Record the affected version, required action, test devices and planned submission. Link the underlying notice in the team's maintenance backlog so a supplier can explain why the work is necessary. The live official pages below should take precedence over an old date copied into a budget spreadsheet.
Apple: current app submission and SDK requirements
Google Play: target API submission and availability requirements
Give your app's next year a clear scope.
Share the current app, recent issues and support expectations. We can help separate routine maintenance, compatibility work and the improvements that need their own plan.
Price React Native updates with the native boundary in view
Sharing application code can reduce duplicated implementation, but the app still ships through two platform environments. Budget checks of signing, permissions, login, notifications, payments where applicable and the main customer journey on the supported iOS and Android devices. Avoid promising a fixed percentage saving from the framework name alone.
For an Expo app using EAS Update, an update must be compatible with the native runtime already installed. Changing native code requires a new build. A proposed camera-library change and a compatible text correction can therefore follow different release paths and incur different verification work. Ask which path the estimate assumes.
For an existing bare React Native app, inspect how native changes are owned before recommending a workflow migration. MUBBITS' Click and Go modernization is useful project context for redesigning and reorganizing an older app; it does not establish the ongoing maintenance price of this hypothetical coaching app.
Expo: runtime compatibility and when a new build is required
Use the first 90 days to make the app supportable
When another team takes over, a support promise should follow evidence that it can build, observe and release the product. Use the following sequence as a planning framework, adjusting it for an urgent incident or a known platform deadline. It is not a promise that every inherited app can complete a takeover in 90 days.
In the first month, confirm authorized access, reproduce a build and map production dependencies. Identify the real backend, signing ownership, release accounts and where incident evidence goes. Record any gap between the source and the live app before estimating routine fixes.
During the next month, rehearse the important customer journeys and complete a small, verified change. For the fictional coaching app, that includes sign-in, restoring paid access and opening assigned content. Agree how an unsuccessful release is contained; returning a mobile app to an earlier state may require a new store release rather than an instant rollback.
By the third month, review the actual hours, incident types, usage bills and planned compatibility backlog. Revise the allowance from observed work. Keep an evidence trail for what shipped and what remains unresolved rather than treating a quiet issue tracker as proof that the app is healthy.
- Name the business owner and technical responder for an incident.
- Confirm the required source, accounts, signing and dependency inventory.
- Keep a repeatable build and a short verification script for the core journey.
- Review recurring services and upcoming platform work against actual usage.
Compare support proposals before choosing a monthly fee
Give every supplier the same app links, framework versions, recent issue history and desired coverage. A business-hours acknowledgement and an out-of-hours incident commitment are different services. Ask who decides severity, what is included, how extra work is approved and whether unused effort rolls over. Do not infer a resolution guarantee from the word support.
MUBBITS can help review an existing mobile app and scope its next maintenance or modernization phase. Bring the current constraints so that the proposal can distinguish routine care, initial catch-up and product development. That separation makes the next invoice easier to understand and the next release easier to assess.
Request a maintenance scope you can compare
Use when budgeting after launch or changing an app support provider.
Our app is [store links] and uses [framework/version, native modules and backend]. Our supported users/devices are [details]. Recent issues and known deadlines are [list]. We need [coverage hours and incident expectations].
Please separate takeover/catch-up, routine issue handling, compatibility work, release verification, services and new features. Confirm authorized account/signing ownership, build reproducibility, included hours, extra-work approval and handover evidence. Explain overlaps so we do not count release work twice. Quote in [USD/GBP/CAD/AUD].Frequently asked questions
How much does it cost to maintain a mobile app per month?
The amount depends on the workload and service scope. This guide's fictional app has a USD 9,960 annual planning envelope, averaging USD 830/month, including an assumed reserve. It is not a MUBBITS retainer or a market average. Actual monthly spend may be uneven, and features, account fees, transaction fees and taxes are outside that example.
Should maintenance always be a percentage of the original build cost?
A percentage can be an initial discussion prompt, but it does not identify current dependency work, support coverage, platform deadlines or an inherited backlog. Ask for a workload-based estimate and explicit exclusions before treating a percentage as the budget your app needs.
Does a bug-fix warranty include future iOS and Android updates?
Only the actual agreement can establish that. A defect-correction period, ongoing support and future compatibility work may have different scopes. Confirm the distinction, the affected versions and the approval process for additional work in writing.
Can a new team maintain our app without rebuilding it?
Often the first step is to inspect and reproduce the existing product, not decide on a rewrite. The team needs authorized access to the source, build configuration, release accounts and services. Scope any unsupported components or missing ownership separately before agreeing routine maintenance.
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