New features for the app you already have
Your app is live and users are asking for more. Adding features to an existing product is different from starting fresh: the new work has to fit the current architecture, respect existing data and ship without disrupting the people already using it. We get to know your codebase quickly, plan each feature with you, and deliver it through regular test builds and staged releases. Whether it is a subscription paywall, AI assistant, chat or offline mode, it arrives working and well integrated.
What we deliver
Codebase onboarding
A quick review of your architecture, conventions and build process so new code matches what is already there.
Feature specification
User flows, edge cases and acceptance criteria agreed before development begins.
Implementation and tests
Clean, reviewed code with tests for the new behaviour and checks that existing features still work.
Backend and API changes
New endpoints, database migrations and integrations that support the feature end to end.
Staged rollout
Feature flags, phased releases and monitoring, so new functionality can be turned off quickly if something goes wrong.
How we approach it
Fit the existing code
We follow your patterns and naming rather than introducing a second style, which keeps the codebase maintainable.
Protect what already works
Regression checks and data migration plans make sure current users are not affected by the new release.
Measure adoption
Each feature ships with events that show whether people find it and use it, informing what to build next.
Technologies
- Swift
- SwiftUI
- Kotlin
- Flutter
- React
- Node.js
- Firebase
- OpenAI API
How we work
- 01
Discovery
A short call to understand your goals, users and constraints. You get a clear scope, timeline and estimate.
- 02
Design
User flows and high-fidelity screens that follow Apple’s Human Interface Guidelines — reviewed together before a line of code.
- 03
Build
Iterative development in Swift and SwiftUI with regular TestFlight builds, so you can try the app on your own iPhone as it grows.
- 04
Launch
App Store assets, submission and review handled end to end. Your app goes live under your own developer account.
- 05
Support
Bug fixes, iOS version updates and new features after launch — based on real user feedback and analytics.
Questions
How quickly can you start working on our existing codebase?
After you share repository access and a short walkthrough, we usually need a few days to review the architecture and build setup before we are productive on new features.
Can you add AI features to an app that already exists?
Yes. Common additions include chat assistants, document and image understanding, smart search and personalised recommendations, connected to the model provider that suits your needs and budget.
Will adding new features slow down or break the current app?
We guard against that with regression testing, performance checks and feature flags. New functionality can be released to a small group first and expanded once it proves stable.
Do you work on one feature at a time or a whole backlog?
Both. Some clients bring a single well-defined feature, others hand us a prioritised backlog. We estimate each item and agree the order with you.
Have a project in mind?
Tell us about it. Our team in Istanbul replies within one business day with next steps and a free intro call.
Start a project