App Maintenance & Support

The app maintenance and support service that keeps a live app from quietly rotting

BinaryBrill's app maintenance and support service covers the OS upgrades, dependency currency, crash triage and app bug fixing and updates that keep a live iOS or Android app working, delivered as ongoing app maintenance services rather than a one-off fix. As a mobile app support company, in-house senior engineers take ownership of the crash rate, the release calendar and the codebase — including apps we didn't originally build.

A senior engineer replies within 24 hours — not a sales rep.

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What happens to an app once the build team moves on

Every September and every Android release is a fire drill

Apple ships a new iOS version and a permission prompt behaves differently, a deprecated API stops responding, or a layout collapses on a new screen size. Google raises the target SDK level and the app becomes unlistable until someone updates it. Nobody owns watching the beta releases, so the team finds out from users.

The crash rate is known and nobody's triaged it

Crashlytics or Sentry is installed and quietly filling up. Nobody has separated the one crash affecting eight percent of sessions on a specific Android version from the two hundred that hit one device each. Without that separation the list looks hopeless, so it gets ignored, and the fixable problem stays in production for a year.

The original developers are gone and nothing is written down

The build only compiles on a laptop that's left the building, the signing certificate lives in an old Slack thread, dependencies are four major versions behind, and the one person who understood the sync logic moved on. A change that should take a day takes three weeks because the first two are spent getting the project to build at all.

Small fixes pile up because none of them justify their own project

A broken date picker on one Android version, a memory leak that only shows up after twenty minutes of use, a third-party SDK throwing deprecation warnings — none of it is large enough to greenlight as a project, so it all sits in a backlog that never gets staffed, and the app gets very slightly worse every quarter.

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How an app maintenance and support service should actually run

Maintenance goes wrong when it's treated as a queue of tickets picked up when someone has spare time. We treat it as ownership: someone is accountable for the crash rate, the OS release calendar and the dependency graph, and reports on what changed each month.

We start by taking control of the build, not the backlog

Before any bug fixing, we get the project building reproducibly in CI, move signing into a managed store, and upgrade the dependencies blocking everything else. It's unglamorous and it's the difference between a two-day fix and a two-week one for the rest of the engagement.

Crashes and ANRs ranked by sessions affected, not by count

We group the noise, identify the handful of issues actually costing you sessions — usually a specific OS version, a specific manufacturer, or a state the app enters after a background kill — and fix those first. Crash-free session rate becomes a number you see monthly, with a trend, rather than a dashboard nobody opens.

OS releases handled before they arrive, not after

We track developer betas from summer onwards, build against new SDKs early, and fix what breaks while it's still a beta rather than while your users are on it. Play's target SDK deadlines go in the calendar as hard dates, because missing one takes the app off the store.

Dependency and SDK upgrades handled deliberately, on a schedule

Third-party libraries get upgraded in planned increments rather than left until a security advisory or a store policy forces an emergency migration. A dependency four majors behind is a known, budgeted piece of work, not a surprise that blocks the next release.

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What this covers

Pick the piece you need, or bring us the problem and we'll tell you which applies.

iOS & Android OS Version Readiness

Apple and Google each ship a major OS update every year, and each one breaks something specific — a permission prompt, a deprecated API, a layout on a new screen size. We test against developer betas before your users are on the release, so compatibility work happens on our schedule, not as an emergency.

  • iOS and Android developer betas tracked and built against from the first beta release, not the public one
  • Play target SDK deadlines tracked as hard dates, since missing one takes the app off the store
  • Layout and permission-flow regression testing on every major OS release before it ships to the public

Crash & ANR Triage and Bug Fixing

App bug fixing and updates prioritised by how many sessions an issue actually affects, not by how many tickets it generated. We group the noise, isolate what's actually costing you users, and fix that first — usually a specific OS version, a specific manufacturer, or a state the app enters after a background kill.

  • Crash and ANR grouping by root cause and affected session volume, not raw event count
  • Fixes shipped through staged rollouts so a bad fix doesn't reach your whole install base at once
  • A monthly crash-free session rate you can see trending, not a dashboard nobody opens

Dependency, SDK & Framework Upgrades

Third-party libraries, native SDKs and the underlying framework version — Swift, Kotlin, React Native, Flutter — upgraded in planned increments as part of ongoing app maintenance services, rather than accumulating until a security advisory or a store policy forces an emergency migration.

  • Dependency upgrades scheduled deliberately, with breaking changes assessed before they land
  • Security advisories on installed packages monitored and patched on a known cadence
  • A dependency graph that stays current, so the next feature isn't blocked by a four-version-old library

Legacy App Takeover & Build Recovery

Getting an inherited app buildable and shippable again — the certificate that lives in an old Slack thread, the project that only compiles on one laptop, the dependency tree nobody's touched in three years. This is how a mobile app support company earns trust before it earns a longer engagement.

  • Reproducible CI builds established from a clean checkout, however the project currently stands
  • Signing certificates and store account access recovered or re-established in your name
  • A documented release runbook written for an engineer who has never met the original team

Backend & API Maintenance

A meaningful share of what users report as app bugs are actually API latency, a push notification pipeline that's stopped delivering, or an expired certificate on the server. We monitor and maintain the backend alongside the client app rather than treating it as someone else's problem.

  • API and push notification pipelines monitored alongside client-side crash reporting
  • Server-side certificate and credential expiry tracked before it takes down notifications or payments
  • Backend fixes handled in the same engagement and release cycle as the app, not handed back as a separate ticket

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The stack we build on

Chosen to fit the problem — not because it's what we used last time.

Monitoring & diagnostics

  • Firebase Crashlytics
  • Sentry
  • Datadog
  • Firebase Performance Monitoring

Release engineering

  • Fastlane
  • GitHub Actions
  • Bitrise
  • TestFlight
  • Play internal testing tracks
  • Staged rollouts

Codebase & dependency upkeep

  • Swift
  • Kotlin
  • React Native
  • Flutter
  • Dependabot

Testing

  • XCTest
  • Espresso
  • Detox
  • Firebase Test Lab

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How we'll work together

Every stage ends with something in your hands — not a status update.

  1. 01

    Health check and handover

    We audit what you actually have: whether the project builds from a clean checkout, where the certificates live, how far behind the dependencies are, and what the crash and ANR data show.

    You get: A written health report covering build reproducibility, crash hotspots and dependency risk, with a prioritised remediation list.

  2. 02

    Stabilise the release path

    Automated builds, signing moved somewhere a bus factor of one can't hurt you, staged rollouts configured, and the top crashes cleared. The goal is that shipping an urgent fix stops being an event.

    You get: A working CI pipeline, managed signing assets in your accounts, a documented release runbook, and a measurable drop in the crash rate.

  3. 03

    Clear the deferred upgrade backlog

    OS target versions, third-party SDKs and the underlying framework brought current in planned increments, rather than in one risky push right before a deadline.

    You get: An app compliant with current iOS and target SDK requirements, and a dependency upgrade log your team can read.

  4. 04

    Ongoing ownership

    A standing monthly rhythm: OS beta testing, dependency and SDK upgrades, crash triage, and a slice of capacity kept for the small fixes that never justify their own project.

    You get: A monthly report on crash-free rate and releases shipped, plus a rolling plan for the next period.

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Where we've applied this

Finance

Banking and wallet apps with hard obligations around SDK currency, encryption and biometric APIs, where an out-of-date dependency is a compliance question as much as a technical one.

Health & fitness

Subscription apps where churn is driven by a broken sync or a crash in week two, and a stability problem costs more than any feature would have earned.

Mobility & transport

Ride and delivery apps whose background location and notification behaviour has to be re-verified every time either platform tightens its restrictions.

Education

Learning apps with a release calendar that has to work around term dates, where an OS upgrade can't be allowed to land mid-semester untested.

Retail & e-commerce

Shopping apps that cannot afford a checkout crash during a sale period, when the crash rate matters more than any other week of the year.

SaaS & agency handovers

Apps inherited from a previous team or agency that need stabilising — build recovered, certificates re-established — before any feature work resumes.

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Questions buyers ask us

Will you support an app your team didn't build?

Yes — it's most of this work. We begin with a paid health check covering whether the project builds from a clean checkout, where the signing assets are, how far the dependencies have drifted and what the crash data shows. You get that report whether or not you continue with us, and it tells you honestly if any layer is past economic repair rather than us quietly billing around it.

If you have enough ticket volume to keep a full-time engineer genuinely busy, in-house can make sense. Most apps don't — the OS upgrade cycle, crash triage and dependency work are real but uneven, which is exactly the shape a mobile app support company is built for: capacity that flexes with what the app actually needs that month, without you carrying a full salary for quiet weeks.

It scales with how much of the app you want actively owned. A stability-only arrangement covering OS releases, crash triage and security patching is modest. Adding backend upkeep or a stream of small feature work costs more because it consumes real engineering capacity every month. We size it after the health check, since an app carrying three years of deferred upgrades needs more attention in the first quarter than afterwards.

Only what the specific issue requires, and only for as long as it takes. Crash and diagnostic data is usually enough to triage most problems without touching production user data directly; where we do need access, it's scoped, logged, and agreed with you in advance rather than assumed.

When the underlying architecture has accumulated so many workarounds that continued patching costs more than a rebuild would, or the install base has fallen to the point where the maintenance spend no longer makes commercial sense. We'll say so directly in the health check rather than keep billing a slow decline.

That's a related but separate discipline — measured discoverability and conversion work, which we cover on our App Store Optimization page. If retention is falling because the app is unstable, fix that here first; a better listing won't rescue an app users are deleting. If the app is stable and simply isn't being found, ASO is the next step.

Usually, though it can take time. Apple and Google both have account recovery and transfer processes, and we'll walk you through them — what we can't do is bypass them. Where a previous agency still holds the account, a transfer is generally possible and preserves your reviews and rankings, which a fresh listing wouldn't. Worth starting early: these processes move at the platforms' pace, not ours.

You do, throughout. Everything lives in your repository and your store accounts, the release runbook is written for someone who has never met us, and dependency upgrades keep the codebase current rather than letting it drift into something only we understand. If you want to move maintenance in-house later, we run handover sessions with your engineers.

Our own in-house engineers in Sahibzada Ajit Singh Nagar, Punjab — 45+ of them, with over a decade of combined delivery experience, delivering for clients in 15+ countries. Nothing is subcontracted. You meet the engineers who will be on your project before you sign, and the person demonstrating the work each month is the person who did it.

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Have an app that needs someone to own it?

Send us the store links and whatever you know about the current state — even if that's only that crashes are climbing and nobody has the certificates. A senior engineer replies within 24 hours with what we'd look at first.