Web · Mobile App Development
Mobile App Modernization
Mobile app modernization is the work of upgrading an app you already have rather than building a new one. It can mean migrating an old codebase to a current language or framework, re-architecting for performance and maintainability, or preparing the app for new capabilities like AI. The goal is to bring an existing, aging app up to today's standards without starting from scratch.
Built withSwiftKotlinSwiftUIJetpack ComposeReact NativeFlutterCI/CD
TRUSTED BY TEAMS THAT SHIP
ISO 27001 Certified
SOC 2 Type 2
PCI DSS Compliance
GDPR Compliance
CCPA Compliance
ISO 27018 Certified“We follow the principles of GDPR, CCPA, and are ISO standards certified to ensure security, privacy, and compliance across all operations.”
What it is
What is mobile app modernization?
Mobile app modernization is updating an existing app so it meets current standards, instead of building a replacement from nothing. It covers several kinds of work: migrating an outdated codebase to a modern language or framework, re-architecting the app for better performance and maintainability, refreshing aging dependencies, and preparing it for new capabilities. The app already exists; modernization improves its foundation rather than its surface.
Modernization matters when an app still works but has become hard to maintain, slow, expensive to change, or unable to support new features. Common triggers are an old framework like Objective-C or older Java, mounting technical debt, or a need to be ready for AI and new integrations. It is a different job from routine maintenance, which keeps an unchanged app running, and from a pure visual redesign, which only changes how it looks. We help you tell which one you actually need.
What's included
What app modernization includes
Framework migrationMoving the app from an old language or framework to a current one, such as Objective-C to Swift or Java to Kotlin.
Re-architectureRestructuring the codebase for better performance, maintainability, and future change.
Performance overhaulFixing the bottlenecks that make the app slow, unstable, or heavy on resources.
Native to cross-platformWhere it makes sense, consolidating separate native apps into one cross-platform codebase.
Dependency updatesReplacing outdated libraries and SDKs with current, supported versions.
AI-readinessPreparing the app's architecture and data so it can support AI features when you need them.
Security and compliance refreshClosing security gaps and updating the app to meet current platform requirements.
How we work
How we modernize your app
1Audit and assessment
We review the existing app, its code, architecture, and dependencies to find what needs work.
2Modernize or rebuild
We recommend whether to migrate, re-architect, or rebuild, with the trade-offs of each.
3Plan the migration
We plan the work in safe stages so the app keeps running as we modernize it.
4Migrate and re-architect
We move the codebase, restructure the architecture, and update dependencies.
5Test and harden
We test for behavior, performance, and security so nothing breaks in the move.
6Release and monitor
We roll out the modernized app and monitor it as the new foundation settles in.
Why it matters
Why modernize instead of rebuild
Modernization brings an aging app up to current standards while keeping the value already built into it.
Lower cost than a rebuild
Reusing what still works is usually cheaper and faster than starting from scratch.
Easier and cheaper to change
A modern codebase is faster to maintain and extend, lowering long-term cost.
Ready for what is next
An updated foundation can support new features, integrations, and AI when you need them.
Who this is best for
The right fit
Best fit for an aging app worth keeping
Teams with an existing app that still has value but is slow, hard to maintain, built on an old framework, or unable to support the features they now need.
You might not need this
If your app mostly needs routine upkeep rather than re-engineering, Mobile App Maintenance and Support is the better fit. If you only want a visual refresh, that is a UI and UX redesign rather than modernization, and if you are starting from nothing, a fresh native or cross-platform build is the place to begin.
FAQs
Common questions about app modernization
Should I modernize my app, rebuild it, or just maintain it?
Maintain when the app works and only needs upkeep to stay stable and compliant. Modernize when it still has value but is slow, hard to change, or built on outdated technology. Rebuild when the foundation is too far gone to be worth saving. We assess your app honestly and recommend the option that costs you the least over time, even if that is not the biggest project.
Can you migrate my app from Objective-C or old Java?
Yes. We migrate apps from older languages and frameworks, such as Objective-C to Swift or older Java to Kotlin, and we can consolidate separate native apps into a single cross-platform codebase where that makes sense. We plan the migration in stages so the app keeps working throughout.
Is modernizing cheaper than building a new app?
Usually, because modernization reuses the parts of your app that still work instead of rebuilding everything. The saving depends on how much of the existing code and architecture is salvageable, which we determine in an audit first. If a rebuild would actually cost less over time, we will tell you.
What is the difference between modernization and maintenance?
Maintenance keeps an app that is essentially unchanged running: updates, patches, and fixes. Modernization changes the app's foundation, by migrating its framework, re-architecting it, or upgrading its core technology. Maintenance preserves the status quo, while modernization moves the app forward. Many apps need maintenance first and modernization later.
Can you modernize an app without taking it offline?
In most cases, yes. We plan modernization in safe, incremental stages so the live app keeps working while we migrate and re-architect behind the scenes. We agree on the rollout approach up front to keep disruption to your users low.
Will modernization make my app ready for AI?
It can. Part of modernization is preparing the app's architecture and data so it can support AI features and new integrations when you want them, rather than bolting them on later. The AI features themselves are a separate build, but a modernized foundation makes adding them far easier.
10Selected work
Proof, not promises.
Representative project types across new builds and rebuilds. Filter by what you care about, named case studies and metrics are added as clients approve them.*
11In their words
The teams who'd build with us again.
Image, audio and video, because trust reads differently in each.
Is your app due for an upgrade?
Get a free app audit. We will assess your existing app, tell you honestly whether to modernize, rebuild, or maintain, and map the work and cost before you commit.
Get your free app audit