SERVICES / BUILD: WEBSITES, APPS & SOFTWARE

Mobile App Development for Android and iOS with Flutter

A mobile app makes sense when people use your service every week or when your staff work away from a desk. RDS Innovations builds cross-platform apps with Flutter, so one codebase runs on both Android and iOS. We plan the screens, connect the app to a secure backend, handle notifications and patchy networks, and guide you through the Google Play and App Store release process.

  • App scope and screen flows
  • Mobile UI design
  • Flutter app development
  • Backend and admin panel
IN PLAIN LANGUAGE

Mobile App Development, explained simply.

Flutter is a framework created by Google that lets us write an app once and release it on both Android and iOS. The app is compiled for each platform, so it responds quickly and can use phone features such as the camera, location, fingerprint or face login and notifications. For most business apps this means less build and maintenance effort than writing two separate native apps.

An app is only as good as the system behind it. Most apps need a backend that stores accounts, orders, bookings, visits or other records, and an admin panel where your team manages that data. We build or extend this backend with REST APIs, often using Django or Firebase, so the app, a web dashboard and your other systems all work from the same information.

Mobile users are often on unreliable networks. For field staff apps in particular, we decide which features must work offline, such as viewing the day's assigned tasks or completing a visit form, and how that data syncs when the connection returns. We also design for small screens, one-handed use, older Android phones and clear messages when something goes wrong.

Publishing involves more than uploading a file. Each store has review guidelines, privacy disclosures, screenshots and listing text. Google Play and Apple developer accounts should be opened in your business name, and their fees are billed separately. We prepare signed release builds, help complete the store listings, respond to review feedback and plan how updates will be released after launch.

PROBLEMS IT SOLVES

Why businesses invest in it.

Customers who expect an app

For repeat orders, bookings or memberships, customers prefer an app that remembers their details, sends reminders and makes reordering quick.

Field teams reporting on paper or by phone

Sales reps, technicians and delivery staff often send updates through calls, WhatsApp photos or paper forms that someone retypes later, which delays information and loses detail.

No direct way to reach users

Without push notifications, businesses rely on SMS or email for reminders and offers, which are easy to miss and cost money per message.

Two separate apps to maintain

Separate native Android and iOS apps can double development and update effort for a business that does not need platform-specific features.

Weak connectivity on site

Apps that stop working without internet are unusable on construction sites, in rural areas or in basements, so staff fall back to paper.

IS IT RIGHT FOR YOU?

Who needs it, and when.

Who it is for

  • Retail, food and service brands that want a customer app for ordering, bookings or loyalty
  • Companies with sales, service or delivery teams that need a field app for tasks, visits and proof of work
  • Clinics, gyms, coaching centers and training providers that want members or students to book and track progress
  • Startups building a consumer or marketplace product where mobile is the main channel

When it is the right time

  • Your users interact with you frequently, such as weekly or daily
  • You need phone features like camera capture, GPS location, barcode scanning or push notifications
  • Staff need to record information on site, including where internet is weak
  • You already have a web platform and want a mobile experience built on the same backend
WHAT'S INCLUDED

Features, deliverables and capabilities.

Scope is agreed in writing for every project. These are the building blocks we typically plan with you.

01

App scope and screen flows

A prioritized feature list and user flows for each role, such as customer, staff and admin, with the screens needed for the first release.

02

Mobile UI design

Figma designs that respect Android and iOS conventions, with clear navigation, readable text, comfortable touch targets and screens for loading, empty and error states.

03

Flutter app development

One codebase for Android and iOS covering login, profiles, the core workflows and phone features such as camera, location and file upload.

04

Backend and admin panel

APIs, a database and a web-based admin to manage users, content, orders, tasks or bookings, built new or extended from your existing system.

05

Push notifications

Transactional and promotional notifications through Firebase Cloud Messaging, with deep links that open the relevant screen in the app.

06

Offline handling

Local storage for selected data, queued submissions that sync when the network returns, and clear indicators showing what has and has not synced.

07

Testing on real devices

Checks across a range of Android phones and iPhones, screen sizes, OS versions and network conditions, including budget phones common among field staff.

08

Store release support

Signed release builds, store listing text, privacy details, screenshots and help responding to Google Play and App Store review feedback.

USE CASES

How businesses use it.

Representative examples of the work, described generically. They are not client case studies.

Field service app for technicians

Technicians see the day's assigned jobs, navigate to each site, record parts used, capture photos and a customer signature, and close the job without signal, syncing later.

Sales visit and ordering app

Reps check in at a retailer using GPS, note shelf stock, take orders from the dealer price list and track their monthly targets, while managers see visits on a dashboard.

Customer ordering app for a food brand

Customers browse the menu, customize items, reorder favorites, pay online and receive push updates as the order is prepared and dispatched.

Member app for a fitness center

Members book classes, check plan validity, receive renewal reminders and view attendance, while trainers mark sessions from the same app.

Parent app for a school or coaching center

Parents receive attendance alerts, homework updates, fee reminders and circulars, and can message the class coordinator directly.

DELIVERY PROCESS

How we deliver it.

Decisions stay visible, important workflows are validated early, and delivery is shaped around the agreed scope.

  1. 01

    Product discovery

    We define the users, their daily tasks, which features must work offline and which phone features are needed, then decide what belongs in the first release.

  2. 02

    Design and prototype

    We design the screens in Figma and share a clickable prototype so you can try the flow on your own phone before development starts.

  3. 03

    Backend and app development

    We build the APIs and admin panel alongside the Flutter app and share test builds through internal testing channels at regular intervals.

  4. 04

    Testing

    We test on real devices and slow networks, and check permissions, notifications and edge cases such as interrupted uploads or expired sessions.

  5. 05

    Store submission

    We prepare store listings, privacy disclosures and release builds, submit them for review and address any feedback from Google or Apple.

  6. 06

    Post-launch updates

    We monitor crash reports and user feedback, update the app for new OS versions and plan the next feature releases with you.

DECISION GUIDE

Cross-platform, native or a mobile-friendly web app?

Not every business needs an installed app. This comparison helps you match the approach to your users and budget.

Cross-platform app with Flutter

Best for: Most customer and staff apps that need to run on both Android and iOS.

One codebase produces both apps with responsive performance and access to the camera, location, notifications and local storage. It reduces build and maintenance effort compared with two native apps and suits the large majority of business use cases.

Native apps

Best for: Apps that depend on the newest platform-specific capabilities or very demanding graphics.

Separate apps written in each platform's own languages give the most direct access to new OS features. They need two codebases and often two specialist teams, which increases cost and the effort behind every update.

Mobile-friendly web app

Best for: Occasional use, internal tools or early validation before investing in an app.

A responsive web application or progressive web app opens in the browser with no store approval and updates instantly. It has more limited access to notifications, background tasks and offline features, especially on iPhones, and cannot be discovered in the app stores.

Benefits, technologies and integrations

BENEFITS

  • One codebase for Android and iOS, which simplifies every update
  • Direct contact with users through push notifications
  • Quicker, more complete information from field teams
  • Work that continues in areas with poor connectivity
  • A mobile experience that shares data with your web systems

TECHNOLOGIES WE USE

FlutterDartFirebasePythonDjangoREST APIsWebhooksPostgreSQLMongoDBRedisDockerCI/CDGitFigma

INTEGRATIONS & CUSTOMIZATION

  • Firebase Authentication and Cloud Messaging for sign-in and notifications
  • SMS/OTP providers for phone-number login
  • Payment gateways such as Razorpay or Stripe for physical goods and services
  • Google Maps for locations, routes and location-based check-ins
  • WhatsApp Business API for order or appointment updates
  • Barcode and QR code scanning for stock, assets or attendance
  • Existing CRM, ERP or booking systems through APIs
  • Crash reporting and in-app analytics
PLANNING

Considerations, cost and timeline.

Limitations & implementation considerations

  • Google Play and Apple developer account fees, and any store commissions on digital purchases, are billed separately and paid to the stores.
  • Store review can take several days and may request changes. Apple in particular checks privacy, login options and payment rules closely, so release plans should allow time for this.
  • Apps need regular updates to stay compatible with new Android and iOS versions and store policies, even when no new features are added.
  • Offline support adds complexity. We agree which features must work offline rather than making the whole app offline, which would raise cost and sync conflicts.
  • Getting people to install and keep an app is a marketing task in itself. If customers will use it only occasionally, a mobile-friendly web app may serve them better.

What affects cost

  • Number of user roles and screens
  • Whether a backend and admin panel must be built or already exist
  • Phone features such as offline sync, maps, camera, scanning or background location
  • Integrations with payments, messaging and existing business systems
  • Design complexity, animations and custom components
  • Range of devices and OS versions to support and test

Typical timeline

A focused first version of a business app typically takes a few months, including backend work, testing and store review. Larger apps with multiple roles and integrations are usually released in phases, depending on scope.

FAQ

Questions about mobile apps.

Why do you use Flutter instead of separate native apps?

Flutter lets us build one app for Android and iOS, which reduces development and maintenance effort while still giving access to phone features. For most business apps the experience is comparable to native apps. If your app needs something Flutter handles poorly, we will tell you during scoping.

Who pays for the Google Play and App Store accounts?

Developer accounts should be opened in your business name so you own the listings and reviews. Google and Apple charge their fees directly, and these are separate from our development charges.

Can the app work without internet?

Selected features can. For example, a field app can show the day's tasks and save forms offline, then sync when the connection returns. We decide together which parts need offline support, because it adds design and testing effort.

How long does app store approval take?

It varies. Google Play reviews are often quicker, while Apple reviews can take longer and may ask for changes. We keep a buffer before any launch date and help resolve review feedback.

Can you build an app for our existing website or software?

Yes, if the existing system has APIs or can be extended with them. We review your current backend and either connect to it or build the APIs the app needs.

Do apps need maintenance after launch?

Yes. New Android and iOS versions, store policy changes and library updates mean apps need periodic attention. We recommend agreeing on a maintenance arrangement from the start.

NEXT STEP

Let's discuss your mobile apps project.

Tell us what you are trying to build, fix or improve. We will reply with questions, a suggested approach and a realistic estimate.

Chat with us