Cross-platform app development with React Native, Flutter and Ionic

We build one app for iPhone and Android from a shared codebase, with React Native and Expo, Flutter or Ionic, and the web admin and back end to go with it. You own the code we write for you.

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Cross-platform apps we have built

Selected projects from our case studies.

Loyalty and rewards

A React Native (Expo) app and PWA for a multi-tenant loyalty platform with receipt checks and lucky draws. See the Froono case study.

Location apps

Flutter apps that create a unique map ID for any location and guide people to it. See the MyAddressPin case study.

Ordering apps

Ionic apps for a restaurant start-up: order now or later, pay by card, and an order manager with receipt printing. See the Forkourse case study.

Work-request apps

A React Native app on top of a long-running ticket and work-request platform. See the Rackless case study.

Admin and back end

The web admin, APIs and database behind the app, built by the same team.

Store releases and upkeep

App Store and Google Play releases, framework upgrades and fixes after launch.

Cross-platform or native?

A shared codebase is usually the better choice when both platforms need the same features and you want one team to build and maintain them. Native apps win when the app depends on device features such as Bluetooth, background location or the camera pipeline; see iOS and Android.

Which framework:

  • React Native and Expo when your web team works in React.
  • Flutter for a consistent, custom-designed interface on every device.
  • Ionic when the app is close to a web app and your team has web skills.
Two phones receiving the same app from a shared block of code

Industries we have built for

The industries of our cross-platform apps projects. Each card opens the projects we show for it.

Selected projects with an app built for iOS and Android from one codebase.

Froono: customer loyalty platform screenshot

Cross-platform app with React Native (Expo)

Froono: customer loyalty platform

  • Retail and eCommerce
  • Web apps
  • Mobile apps
  • Integrations
  • AI

2023–2026

A multi-tenant customer loyalty platform: web admin, customer API, a mobile app and a PWA, with receipt checking, lucky draws, WhatsApp campaigns, AI image generation and online payments.

MyAddressPin app screens: introduction to MapID, the user's MapID list and a contact's public MapID

Cross-platform app with Flutter

MyAddressPin: unique map ID for any location

  • Business software and compliance
  • Logistics and transport
  • Web apps
  • Mobile apps

A digital address service: users create a unique 8-digit MapID for any location, share it and get route guidance, on a Node.js web app and Flutter mobile apps sharing one Firebase back end.

Drive lah: car-sharing app connected to an in-car device

Cross-platform app with React Native

  • Logistics and transport
  • Mobile apps
  • Integrations

2021

A React Native app for iOS and Android that talks to an in-car IoT device over Bluetooth Low Energy, with AES-CBC encryption, CRC checks and a back-end API.

All case studies

What clients say

Harsukhbir is an immediate starter with minimum support, provides clear milestone/daily updates and helped us choose the best solutions to save us time and money on a critical project. We are very pleased to recommend Harsukhbir who help us deliver React Native application for mobile and tablet. We wish him good luck and hope to work together soon.

TappingToad LtdReact Native app for iOS and Android · 2020

All client testimonials

Articles

Guides from our team on the questions buyers ask about this service.

All articles

Technologies we use

Cross-platform tools we use, and the back ends they connect to. Linked technologies open our page for them.

Frequently asked questions

What is a hybrid or cross-platform app?

An app built once and released on both iOS and Android, using tools such as React Native, Flutter, Ionic or Xamarin. It can reduce cost and time compared with two native apps.

Which hybrid framework do you recommend?

It depends on your team, the app and the user experience you need. We work with React Native, Flutter, Ionic, Xamarin, PhoneGap and Kotlin, and help you choose.

When is a native app a better choice?

When the app relies heavily on device features or needs the best possible performance. See our iOS and Android pages.

Do you sign an NDA, and who owns the code?

We sign an NDA before work starts, and you own the code we write for you.

How do I get a quote?

Use the form on this page or book a project call. Tell us what you need and we come back with questions and next steps.

How can we work together?

There are three ways, on the same terms:

  • Dedicated team, best for ongoing work: interview the developers, then they work on your project full or part time.
  • Fixed scope, best when requirements are clear: we agree the scope and the price up front, and deliver against it.
  • Time and material, best when the scope will change: you pay for the time used and can change priorities as the work goes on.

Whichever you choose, we sign an NDA before work starts, you own the code we write, and every change is reviewed in your repository.

Can I interview the developers before we start?

Yes. For a dedicated team you meet the developers in an online call and interview them before they join your project.

Have an app in mind?

Tell us what the app should do. We come back with questions, the framework we would choose and an estimate.