Explore
Need help with your project?
This field is required
Incorrect phone number
Incorrect Email
This field is required
Please fill in all fields
Next
Next
Your role in the project
Services
Budget
Please select one option in each category
Submit
Submit
several colorful figures
Request sent
Our manager will contact you shortly.
Oops! Something went wrong while submitting the form.

Cross-Platform App Development Company

A cross-platform app development company builds one codebase that ships to both iOS and Android, replacing the need for two separate native teams. We've done this since 2014 with React Native and Flutter, as part of our full-cycle mobile app development expertise. If you already know you want React Native specifically, our React Native app development page covers that stack in depth.

From $56,0004–5 months typical buildReact Native / Flutter / KMP

Our cross-platform mobile development services

Cross-platform app design

From outlining a perfect user flow to creating beautiful app screens that look good on any device, we'll help you achieve the vision you have in mind. Our designers know how to create designs that're accessible for everyone and intuitive for both iOS and Android users. This will allow you to reach a much wider audience with your product.

Cross-platform development consulting

Let our expert designers and developers guide you to create the app you want. Our system analysts will help you flesh out your business idea, analyze the market, and find your competitor's weak points. Top of the line designers will map out excellent UX for your app, and our software engineers will tell you what roadblocks to avoid during development.

Outsourcing

Delegate cross-platform app development to our team. We can significantly decrease your time-to-market, considering that we can release your app in 3–4 months. Our agency has every specialist necessary to design and develop the app you want. You can work on your business idea and leave the development to us.

MVP development

If you want to test your idea “in the wild”, consider releasing an MVP (minimum viable version). You'll get a functional product that has all the necessary features at a fraction of the cost you'd have to pay for the development cycle of a full-scale app. With an MVP, you can gain crucial feedback that will elevate your product and distinguish you from your peers. Once it generates profit, you'll get solid proof that your app works, which can help win over investors.

Why choose our custom software development

550+
Project released
10 years
Of making apps for startups and businesses
>50К
Positive reviews collected by our customers' apps in the app stores
>7 years
Longest partnership with the client
200+
People on the team

What our clients tell about us

Seth Abel-Sadeq, KEM — Payment app
Seth Abel-Sadeq
CEO
KEM — Payment app

I'm the CEO of KEM, a P2P mobile payment service for the Kuwaiti market, where not everyone has access to online banking. Our banking partners needed an MVP for demonstrations. Purrweb delivered the design and the MVP, working around the restrictions on connecting to the banking API. On completion, they handed the project over to our in-house team with full documentation and a month of technical support.

KEM — Payment app
Fintech, Design+Development, Mobile app, Cross-platform, MENA

KEM is a P2P app for instant money transfers in the Kuwaiti market: linked bank cards, money requests from the contact list, and transaction history. The key challenge: for security reasons, Kuwaiti banks don't allow outside developers to work with their API — so Purrweb built the back end on mock data, fully simulating the final functionality for demos.

View full case
Matt Brzowski, Buzz
Matt Brzowski
Founder
Buzz

I'm building Buzz, an app for finding and organizing events in small American towns. I came to Purrweb with almost nothing — just an idea. Purrweb helped with marketing, brand identity, and the logo, and walked the whole road to MVP with us, even when our requirements shifted a lot in the early stages. I valued the flexibility and the quality of the design.

Buzz
Lifestyle, Design+Development, Mobile app, Social app, Geolocation

Buzz is a geosocial service for residents of small American towns: a geolocation-based feed of public events, private events with friend invites, group chats, and a Ticketmaster integration. Purrweb created the brand identity from scratch, optimized the architecture, reused ready-made modules, and shipped the MVP in 12 months.

View full case
William Angel, Personalised — wellness app design
William Angel
CTO
Personalised — wellness app design

I'm the CTO of Personalised Co., an app for tracking supplement and vitamin intake. Purrweb designed the product's UI/UX with a Shopify store integration for automatic reordering, and built an interface for healthy living with personalized tracking.

Personalised — wellness app design
HealthTech, Design, Mobile app, Shopify, Wellness

Personalised Co. is an app for people who take supplements and vitamins regularly: intake tracking and automatic reordering through a Shopify integration. Purrweb designed the product's UI/UX with a supplement marketplace and a personal intake schedule.

View full case
Founder of Budss, Budss — fintech cashback app
Founder of Budss
Budss — fintech cashback app

I wish I had known about you when I only started developing Budss. This way, I wouldn’t have to deal with the previous team’s mistakes.

Budss — fintech cashback app
Fintech, banking, insurance, Redesign & UX audit, UI/UX & web design, Mobile development
View full case
Seth Abel-Sadeq
CEO
KEM — Payment app

I'm the CEO of KEM, a P2P mobile payment service for the Kuwaiti market, where not everyone has access to online banking. Our banking partners needed an MVP for demonstrations. Purrweb delivered the design and the MVP, working around the restrictions on connecting to the banking API. On completion, they handed the project over to our in-house team with full documentation and a month of technical support.

KEM — Payment app
Fintech, Design+Development, Mobile app, Cross-platform, MENA

KEM is a P2P app for instant money transfers in the Kuwaiti market: linked bank cards, money requests from the contact list, and transaction history. The key challenge: for security reasons, Kuwaiti banks don't allow outside developers to work with their API — so Purrweb built the back end on mock data, fully simulating the final functionality for demos.

View full case
Matt Brzowski
Founder
Buzz

I'm building Buzz, an app for finding and organizing events in small American towns. I came to Purrweb with almost nothing — just an idea. Purrweb helped with marketing, brand identity, and the logo, and walked the whole road to MVP with us, even when our requirements shifted a lot in the early stages. I valued the flexibility and the quality of the design.

Buzz
Lifestyle, Design+Development, Mobile app, Social app, Geolocation

Buzz is a geosocial service for residents of small American towns: a geolocation-based feed of public events, private events with friend invites, group chats, and a Ticketmaster integration. Purrweb created the brand identity from scratch, optimized the architecture, reused ready-made modules, and shipped the MVP in 12 months.

View full case
William Angel
CTO
Personalised — wellness app design

I'm the CTO of Personalised Co., an app for tracking supplement and vitamin intake. Purrweb designed the product's UI/UX with a Shopify store integration for automatic reordering, and built an interface for healthy living with personalized tracking.

Personalised — wellness app design
HealthTech, Design, Mobile app, Shopify, Wellness

Personalised Co. is an app for people who take supplements and vitamins regularly: intake tracking and automatic reordering through a Shopify integration. Purrweb designed the product's UI/UX with a supplement marketplace and a personal intake schedule.

View full case
Founder of Budss
Budss — fintech cashback app

I wish I had known about you when I only started developing Budss. This way, I wouldn’t have to deal with the previous team’s mistakes.

Budss — fintech cashback app
Fintech, banking, insurance, Redesign & UX audit, UI/UX & web design, Mobile development
View full case

Estimate your cross-platform app

A ballpark range in seconds — refine it below, then talk to an expert.

What are you building?
Platforms
Stage
Features — the cost of each
Design maturity

MVP / new product

$30,000 – $45,000

Timeline: 2–4 months · team of ~4

~30% saved with React Native vs two native teams

Plus UI/UX design $5k–$5k · QA & project management included

What drives your estimate: iOS + Android build (+15%)

To fit a smaller budget: start with one platform

or discuss it with an expert

Preliminary estimate, refined on a call. USD.

We’ll email you a detailed estimate

We’ll email the breakdown right away: scope, cost drivers, timeline. No spam.

80
reviews on 3 platforms
4,9
average rating
Clutch logo
44 reviews
GoodFirms logo
19 reviews
17 reviews

Some cross-platform apps we can make

e-Wallets

From neobanks to cryptocurrency, we'll create an app that simplifies finance and makes you money. Our software engineers use reliable technologies to make financial transactions “bulletproof”: i. e. resistant to scammers. Your users won't have to worry that their personal info gets leaked somewhere, and this will allow you to retain more clients.

eCommerce

Food delivery, content marketplaces, you name it — we'll create an app that stands out from the likes of eBay and Amazon. Our UX designers will outline distinct features based on the business niche of your future app. This can give you a competitive edge over other similar apps, providing users with a unique experience they can't get anywhere else.

Healthcare apps

We know the ins and outs of this complicated business sphere, and have the experience necessary to help you get in. Our software engineers can develop a healthcare app for any device: from a regular smartphone to smart watches and fitbits. Also, you don't have to worry about your app violating some sort of law. We know what guidelines are important: e. g. we'll create a HIPAA-compliant app that won't get booted off the app stores.

POS-software

From integrations to tools for inventory data, we'll help you create an app that simplifies interactions with clients and in-person payments. Thanks to our experience as a POS software development company, you can rest assured, knowing you'll get a cost-effective solution on time.

Learning apps

Have an idea that'll change education as we know it? Leave it to us. Our designers will create a functioning app of any scale: this includes corporate educational platforms for SMEs and international apps for language learning. And if you want to have video calls and payment processing done in the app, we can integrate that, too.

IoT

Get an app that works no matter the technology. We can design and develop firmware for appliances, smart home-related software, an app for wearables and much more. Contact us if you want a product to enhance your work processes — or a white label app that you can sell to other companies.

Any mobile app of your choosing

The list of services on this page isn't exhaustive. If you want to create a cross-platform app in a different niche, don't hesitate to give us a call. We'll make sure your app stays on top of the competition.

Our cross-platform development process

1

Gauging the market

We analyze your potential customers and competitors. With this info, It'll be easier to pick the best features to add into your app. During this step, our system analysts analyze the market as a whole. They pinpoint key trends which can be of use during app development.
2

Choosing key features

After defining the target audience and their pain points, our specialists choose the appropriate features for your app. At the same time, they flesh out the unique selling point of your app, i. e. what makes you better than other similar apps on the market.
3

Creating UI/UX design

We believe this step is key for great, smooth, responsive user experience. Our designers will map out a user journey with actions your customers can take inside the app. This will help you create an app that users actually open and utilize.
4

Development and QA testing

Our software engineers create an app in record time with minimal bugs. If there are any glitches found before release, they'll be dealt with, thanks to regular testing. And because we create a cross-platform app, we can launch it on both iOS and Android in half the time.
5

Updating

Development doesn't end after release. With each update, we perfect the app so it finds more users and makes more money.

Cross-platform app development technologies we use

JavaScript
Nest.js
React.js
Electron.js
React Native
Flutter
Redis
PostgreSQL
AWS
Jenkins
Nginx
WebRTC
PWA
Vercel

How much does app development cost?

The cost of the app depends on several things.
A type of app. Simple apps — think brochure type apps, with uncomplicated designs — cost less to make than complex ones. The latter apps have fluid, responsive animations, an elaborate interface and additional features.
Number of features. It also plays a part in cost estimation. The more features you have, the more time it will take to implement them in an app, so you'll have to pay more.
Type of developer. If you're outsourcing software development, it's going to come out cheaper than in-house development. That's because you don't have to pay taxes, bonuses, and large salaries to get the job done.
If you want an app with a basic functionality, the costs can start from as low as $56,000. In this case, cross-platform app development takes roughly 4 months.

Advantages of cross-platform development services

Fast development

If you want to make an app that's compatible with both iOS and Android, cross-platform development will help you save time. Your mobile app developers can write code only once — and adjust some parts of it to suit it to both platforms. A company that tries to create an app for these systems natively would have to spend more time — compiling code for each of them from scratch.

Lower costs

Writing a cross-platform app requires less resources because you don't need to hire 2 separate teams. Companies that resort to native software development have to keep track of both iOS and Android-adjacent teams. They work with different frameworks: e.g. the former with Swift, the latter with Kotlin. Finding this many appropriate developers and hiring them costs more money and time.

Lower time to market

With two apps, companies have to supervise additional QA testing and release strategies. But a cross-platform app allows you to do that once and release an app earlier without bugs. You'll get an app that's ready to hit the market in about 4 months. You'll also encompass a broad audience — users of both iOS and Android platforms.

Native performance

With modern frameworks, cross-platform apps perform just as good as native ones. There will be no bugs or freezes. Your clients will be able to use your app on any device without getting irritated — either by malfunctions or non-native elements which would look odd.

React Native vs Flutter vs Kotlin Multiplatform — Which Framework Fits Your Project?

React Native is Purrweb's default cross-platform stack: TypeScript over a native bridge (or the newer Fabric renderer) calling native UI components on both iOS and Android. It's the right call for most MVPs and mid-complexity apps — fast iteration, a large hiring pool, and a native-module escape hatch for the rare feature the framework doesn't expose yet.
Flutter compiles Dart to native ARM code and renders its own widget tree rather than calling platform UI components. That tradeoff means Flutter apps look pixel-identical across every Android OEM and iOS device, which matters for design-forward consumer apps where a slightly different button shadow would get noticed. We build in Flutter when that pixel-parity requirement outweighs React Native's larger ecosystem.
Kotlin Multiplatform (KMP) shares business logic — networking, data models, validation — across iOS and Android while each platform keeps its own native UI layer (SwiftUI on iOS, Jetpack Compose on Android). It buys native-feeling UI on both platforms at the cost of writing two UI layers rather than one shared layer. It's a narrower case, and we don't market ourselves as a KMP-first shop — we say so plainly rather than claim expertise we haven't shipped at scale.
Start with React Native unless there's a specific, named reason otherwise: a pixel-parity brand requirement (Flutter) or an existing native codebase you're extending (KMP or targeted native modules). If you already know your project needs a single platform instead, our iOS app development and Android app development pages cover what each platform needs on its own.

How Much Does Cross-Platform App Development Cost by Project Tier?

MVP: $25,000–$60,000, 8–16 weeks. A single core flow, basic auth, and one integration (payments or maps) — the scope most founders validate demand with before a fundraising round.
Mid-complexity: $60,000–$150,000, 3–5 months. A multi-role app with a custom backend and three or more third-party integrations. A fintech app handling KYC costs more than a content app with the same screen count — compliance logic adds engineering hours that don't show up in a Figma file.
Enterprise: $150,000+, 6+ months. Custom infrastructure, compliance requirements, and multiple platforms.
One cost driver specific to cross-platform: dual-store QA. Testing a payment flow or a camera feature across representative iOS devices and Android OEM/OS combinations takes more QA hours than a single-platform test cycle — we scope it during discovery so it's priced upfront, not after the fact.

Cross-Platform Apps We've Built

KEM — P2P payment app for the Kuwait market. A fintech startup needed an MVP to pitch to banking partners before securing a banking API integration. We designed the UX/UI and built a cross-platform MVP with mock banking data — phone-number signup, linked card management, peer-to-peer money requests — using React Native for both iOS and Android. After handover, KEM's in-house team wrote the production backend with real banking APIs and carried the product toward market.
Settler — apartment renovation app for Dubai. A Dubai-based renovation service needed an app connecting homeowners with contractors, including live-stream video of work in progress. We built Settler as a React Native MVP — renovation stage tracking, expense tracking, contractor receipts — and shipped to both the App Store and Google Play in 4 months.
Fitness App — online workout platform for personal trainers. A fitness-industry client needed a platform connecting trainers with clients for remote coaching: video workouts, in-app chat, training-program scheduling, and Stripe payments. We built it with React Native and a Node.js backend, targeting both Google Play and the App Store.
Across all three, one React Native codebase targeted both platforms — the pattern cross-platform is built for, whether the goal is a bank-partner pitch deck, a live launch, or a release in progress, without funding two parallel native teams to get there.

Cross-Platform App Development Consulting

Not every engagement needs a full build. We run standalone cross-platform app development consulting for teams that already have an app or an in-house team and need an outside read on the stack: a framework audit on an existing React Native or Flutter codebase, an architecture review before a scaling push, a mobile-vs-web scoping call, or a second opinion on a native-vs-cross-platform decision before a founder commits budget either way.
This is scoped and billed separately from a full development engagement — a few days to a few weeks of senior engineering time, a written assessment, and a recommendation you can act on with or without hiring us for the build.

FAQ

What is cross-platform development?

Companies get cross-platform app development when they want to create a product for multiple systems — in the case of a mobile app market, it's Android or iOS.
It differs from native app development. When creating a cross-platform app, developers write code once and modify a small chunk of it to make the app faster. In the case of native app development, multiple application development teams work with separate apps using different programming languages. It usually takes longer and costs more.
Cross-platform game development with React Native is a popular use case — one codebase lets you ship a game to both iOS and Android, cutting development time and cost significantly.

How much does cross-platform app development cost?

The price typically varies from $30,000 to $60,000. There are many things which influence this number: e.g. the general business idea, the number of features and design complexity. If you want to find out more about the price, read more in a guide on factors going into the cost.

How long does cross-platform app development take?

In our case, it takes about 4-5 months. This is our own estimate — other companies may take longer when creating apps. Find out exactly what goes into development and how much time each step of the process takes.

How do you choose a cross platform app development company?

Look for contractors with expertise in cross-platform app development. A business focused on native app development won't have the skills needed to make a cross platform app.
Keep in mind that the company has relevant expertise — both in working with businesses of your size and in your niche. They'll know what pitfalls to avoid to make a solid product.
This is where a portfolio can help — you'll be able to find out whether any of projects similar to you have turned out a success.
Finally, make sure that the company has talented developers. This way, you won't have to overpay for development mistakes. You can read more about factors which influence whether the company is good.

Can I get modifications to my cross platform app once it is launched?

Yes! After the launch we can add new features and modify old ones.