Mobile & Desktop
Mobile App Development Company in Bhubaneswar Building React Native Apps
Mobile app development is the design, build, and release of applications for Android and iOS. TechWebster builds cross-platform apps in React Native and Expo from Bhubaneswar, Odisha, including the backend APIs, device integrations, store submission, and desktop builds.
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What Mobile Apps includes
React Native and Expo app builds
One TypeScript codebase for Android and iOS, using Expo's build and update tooling where it fits and bare React Native where a project needs deeper native control.
Native modules and platform integrations
Kotlin and Swift bridges for camera, biometrics, location, push notifications, and vendor SDKs that have no reliable cross-platform package.
Offline-first data and synchronisation
Local SQLite storage, background sync, and a conflict rule agreed before coding, so the app stays usable when the connection is poor or absent.
Backend, APIs, and admin tooling
Node.js, TypeScript, and Firebase services behind the app: authentication, API endpoints, push delivery, file storage, and an admin view for your team.
Real-device QA and store submission
Testing on physical Android and iOS hardware, then Google Play and App Store listings, data disclosures, signed builds, and replies to reviewer queries.
Desktop builds from a shared codebase
Windows, macOS, and Linux applications sharing logic with the mobile app, suited to internal tools and staff-facing software.
Should I build one app for both Android and iOS?
Usually yes, and React Native is why that answer has become routine. One TypeScript codebase compiles to both platforms, so a feature is specified, built, and tested once rather than twice, and the two versions do not drift apart over a year of releases. Cross-platform is the right call for apps whose work is screens, forms, lists, authentication, payments, messaging, and data sync, which covers most business and consumer products. It is the wrong call when the app essentially is the device: heavy real-time video or audio processing, sustained 3D rendering, continuous background sensor work, or features depending on platform APIs released only weeks ago. It is also wrong if you need one platform and genuinely will never need the other. We say so when that is the case rather than forcing the stack, and we can mix approaches, keeping the app in React Native while writing a native module for the one part that needs it.
How do you make an app work without a reliable connection?
By treating the device as the primary store rather than a cache. An offline-first app writes to a local database on the phone first, usually SQLite, and the screen updates from that local state immediately, so the interface never waits on a network round trip. A background process then pushes changes to the server once a connection returns. The hard part is not storage, it is conflict: two people editing the same record, or one person editing on a phone that has been offline all day. That needs a rule decided before any code is written, whether last write wins, server authority, field-level merging, or a queue the user reviews. We also scope partial sync so each user downloads only the records they need, which matters on large datasets and metered connections. Field teams, delivery apps, and clinical tools generally need this; a login-and-browse app does not, and we will say so.
Can a cross-platform app use the camera, push, and biometrics?
Yes. Camera and photo library access, push notifications, foreground and background location, biometric unlock through Face ID and fingerprint sensors, file storage, Bluetooth, and secure keychain storage are all reachable from React Native, either through Expo's modules or through maintained community packages. Where no package exists, or an existing one behaves badly, we write a native bridge in Kotlin or Swift and call it from TypeScript, which keeps the rest of the app cross-platform. Two things decide whether this goes well. First, permissions: both platforms expect a clear reason shown before access is granted, and both stores reject apps whose stated reason does not match actual behaviour. Second, battery and privacy: continuous location tracking and background work are the usual cause of poor battery reports and the usual subject of reviewer questions. We scope them to what the feature needs and make the path work when a user declines.
What does getting an app onto Google Play and the App Store involve?
Each store needs a developer account, signed builds, listing copy and screenshots at the required sizes, a privacy policy, and a completed data disclosure: App Privacy for Apple, the Data safety form for Google Play. Before submitting, we test on real Android and iOS hardware, including older low-memory devices, because emulators misrepresent camera behaviour, push delivery, biometrics, and real-world performance. Apple's review is the stricter of the two, and what commonly delays approval is predictable: a disclosure that does not match what the app actually sends, login-gated content with no demo account supplied, vague permission descriptions, a payment flow bypassing in-app purchase where Apple requires it, and crashes on the reviewer's device. We clear those before submission rather than after a rejection. Neither store publishes a binding review time, so we plan releases around that uncertainty instead of quoting a publication date.
Who builds the backend and APIs behind the app?
We do, as part of the same project. A mobile app is a client, and most of its behaviour depends on what sits behind it: authentication and session handling, the API it calls, push notification delivery, file and image storage, background jobs, and an admin interface for whoever runs the business. We build these in Node.js and TypeScript, or on Firebase where its authentication, realtime database, storage, and messaging cover the requirement and reduce what has to be maintained. Designing the API alongside the screens avoids the common mismatch where one view needs four requests to render. If you already have a backend, we integrate with it and document what we found. We also build desktop applications from a shared codebase for Windows, macOS, and Linux, which suits internal tools where staff work mainly on a laptop and only occasionally on a phone.
Mobile Apps questions
Is React Native suitable for a production app?
Yes, for most categories. It renders real native UI components rather than a web view, and performance complaints in practice usually trace to list rendering, image handling, or over-fetching, all of which are fixable. Apps built around heavy media processing or sustained 3D rendering are better served natively.
How much does a mobile app cost to build?
It depends on the number of screens, whether offline sync is needed, which device capabilities are involved, how much backend already exists, and whether both stores are in scope. We scope those with you and quote against a defined feature list rather than a guessed figure.
Do I need my own Apple and Google developer accounts?
It is better if you own them. The app, its signing identity, reviews, and analytics then stay with your business, and nothing has to be transferred later. We can help set them up and do the submission work from your accounts.
Can you take over an app someone else built?
Yes. We read the codebase and build it locally first, then report what we find: dependency state, native configuration, test coverage, and anything likely to block a store release. You get that assessment before committing to further work.
How long until the app is live in the stores?
That depends on scope and on review, for which neither Apple nor Google guarantees a duration. We give a build schedule against an agreed feature list, submit once device testing is clean, and keep you updated through review rather than committing to a publication date.
What happens after launch?
Fixes at the JavaScript level can ship as over-the-air updates without a new store submission. Native changes, new SDKs, and support for new OS versions need a fresh build through each store. We also handle dependency upgrades, backend monitoring, and store policy changes as they arrive.
Thinking about a mobile app?
Tell us what the app needs to do, who uses it, and whether a backend already exists. We will come back with a straight view on cross-platform versus native, a scope against a feature list, and what the store path looks like. We work with clients in India, the UAE, the USA, and Canada.
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