Home All services
Start a project → Call Now

Mobile app development company in India

iPhone and Android apps, built and released — including the awkward parts.

We build mobile apps in Swift and Kotlin, or in React Native and Flutter when one shared codebase makes more sense. Store submission, push notifications, offline use and a security review against OWASP MASVS (OWASP's mobile app security standard) are part of the build, not a later conversation.

Talk to an engineer Get a cost estimate
  • Security review included, not sold separately
  • Store submission and rejections handled
  • We reply within one working day.
  • Swift
  • Kotlin
  • React Native
  • Flutter
Illustration: a large smartphone showing a simple app layout of rounded blocks, with a bell, a refresh arrow and a tick floating around it on thin lines of light

In brief

What it is
We design, build and release mobile apps for iPhone and Android: native in Swift and Kotlin, or one shared codebase in React Native or Flutter. New apps, or an app someone else started.
Why it matters
The screens are rarely the hard part. Store review, offline use, push notifications and updates are where app projects get awkward, so we plan them from the start.
What you get
A finished app that we submit to the App Store and Google Play, with any review rejections handled. Before release we check it against OWASP MASVS, fix what the check finds and re-check every fix.

What we build

Native apps, shared-code apps, and care after launch.

Pick a page for the detail, or bring your feature list and we'll suggest the route.

Native iOS and Android

Swift and SwiftUI for iPhone, built to Apple's Human Interface Guidelines. Kotlin and Jetpack Compose for Android, built to work across many phone makers. Best when the app leans on hardware.

An app is usually one part of a product. See web and custom software for the web app beside it, API development and integration for the systems it talks to, or all our services.

The awkward parts

What happens outside the screens is planned from day one.

We build the server your app talks to (the backend) alongside the app itself, because the backend usually drives the timeline more than the app does. We plan the store and update work early, so it doesn't hold up the launch.

What we plan from the start

  • Store review. We submit to the App Store and Google Play ourselves, and handle the review rejections that usually follow a first attempt.
  • Offline use. If the app has to work without a signal, it keeps its data on the phone and sends only the changes when the connection comes back.
  • Push notifications. We set up the server side that sends them, not just the code that shows them.
  • Updates. Staged rollouts (a new version reaches a small share of users first), crash reports, and the changes each new iOS and Android release forces.
  • Security. A review against OWASP MASVS before release: how the app stores data, talks to the server and handles sign-in, and how hard it is to tamper with.

Which one do you need?

Find the page that answers your question.

Apple and Google each set their own rules, and each way of building has trade-offs. Pick the question closest to yours.

What each page covers, in more detail
  • Cross-platform: your feature list marked line by line, to show when one codebase for both stores fits the hardware access your app needs and when native is required.
  • iOS: the Apple review rules that reach into the architecture, what a live app can change without a new build, account deletion, what third-party SDKs collect for the privacy label, and a working login for Apple's reviewer.
  • Android: Google Play's target API level floor, the dates Google raises it, the code changes each raise forces, and raising the target on an app someone else built.
  • Flutter: how Flutter draws its own controls, what a screen reader hears through the semantics tree, the choice of Material, Cupertino or adaptive widgets screen by screen, and measured contrast.
  • React Native: which features need native code, how calls cross between JavaScript and native code in the New Architecture, a small typed contract for each native module, and testing on real devices.
  • Maintenance: urgent security fixes ahead of the schedule, routine patches on planned dates, and OS compatibility and library (dependency) updates, under a written support agreement.

How we work

Choose the approach first, then build, check and release.

The approach is settled before the build starts, and nothing reaches the stores before the security review.

  1. Approach

    Bring your feature list. We look at what the app has to touch, such as the camera or Bluetooth, and agree native or cross-platform with you in the first conversation.

  2. Build

    We build the app and the backend behind it: the APIs, push notifications and, where the app needs it, offline sync. An automated build pipeline makes every release repeatable.

  3. Security review

    We check the app against OWASP MASVS, tighten its settings, check the code libraries it relies on and how it is configured, and run a vulnerability assessment (a search for known weaknesses). We fix what we find and re-check each fix before release.

  4. Store release

    We submit to the App Store and Google Play, handle any review rejections, and roll the release out in stages.

  5. After launch

    Crash reports, updates for each new iOS and Android release, and security patches, through app maintenance and support.

For your technical team

What we build with, and where the work stops.

The detail your developers will ask about.

Native iOS: Swift, SwiftUI and Combine

Built to Apple's Human Interface Guidelines, with no web wrapper between the app and the phone. Widget extensions and Dynamic Island integrations where the product needs them.

Native Android: Kotlin, Jetpack Compose and Coroutines

Background work scheduled through WorkManager, automatic adjustments for each device tier, from low-end to high-end phones, and compatibility with hardware from many phone makers (OEMs).

When native is the better choice

Cross-platform suits most products. Native earns its extra cost in cases such as:

  • continuous Bluetooth telemetry or background sensor streams;
  • augmented reality with ARKit, or 3D graphics with Metal shaders;
  • direct hardware control and 120 FPS animation.
Backend, real-time updates and offline sync

APIs in FastAPI or Node, WebSocket channels for real-time updates in both directions, sign-in tokens unlocked by biometrics such as a fingerprint, offline storage in SQLite that syncs only what changed (delta sync), and relays that deliver push notifications.

What the OWASP MASVS review checks
  • Local storage: secrets kept in the phone's secure key storage (such as the Keychain on iPhone), not in plain files.
  • Transport security: encrypted connections, including TLS certificate pinning.
  • Authentication: how sign-in and sessions are handled.
  • Reverse engineering and tampering: anti-tampering measures and jailbreak detection.

Static code and dependency checks are also available on their own as a secure code review.

Release pipeline: Fastlane, staged rollouts and Sentry

Fastlane automates builds and store uploads (CI/CD: continuous integration and delivery). Releases go out as staged rollouts, and Sentry collects crash reports.

What is included, and what is separate. The pre-release security review is part of every app we build. A mobile app security assessment of an app we did not build is quoted on its own. Apple and Google make the approval decision, so we handle the submission and any rejections but cannot promise approval.

FAQ

Questions to ask a mobile app development company.

Platforms, timing, security and taking over an existing app. For anything else, ask us directly.

Yes. Native iOS in Swift and native Android in Kotlin when the app needs platform-specific performance or hardware access, or React Native and Flutter when a single codebase across both makes more commercial sense. We handle store submission and the review rejections that usually follow a first attempt.

Cross-platform for most products: roughly one codebase instead of two, at a real cost saving. Go native when the app depends heavily on the camera, Bluetooth, background location, complex animation, or brand-new platform features. We make that call with you in the first conversation, not after you have paid for the wrong one.

A focused first version is typically eight to fourteen weeks. Apps with custom features, integrations and multiple user roles run fourteen to twenty-four. Anything with real-time sync, offline support or payments sits at the longer end. The backend usually drives the timeline more than the app does.

Yes, and it is included rather than sold separately. We review the app against OWASP MASVS: insecure local storage, transport security, authentication handling, reverse engineering and tampering resistance. Before release, we tighten the app's settings, check the code libraries and configuration it relies on, look for known weaknesses and confirm each fix. We also offer the mobile app security assessment on its own for apps we did not build.

Frequently. We start with a short assessment of the codebase and its dependencies so you get an honest view of what is salvageable before committing to a direction. Sometimes the answer is a rewrite, and we would rather tell you that at the start.

Let's talk

Tell us what your app has to do.

Send the feature list, or the app you need reviewed. Someone who does the work reads it, not a sales rep. We reply within one working day.

Start a conversation Get a cost estimate