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We use ReactJS for modular, customizable web & mobile app development

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Our clients include 150 Global Brands, Silicon Valley Founders,
Small Business Owners, Agencies and Software Companies

We deliver an intuitive architecture that can be responsive to changing business needs

ReactJS is a popular open source JavaScript library that allows for modular development for functional, visually-appealing apps. Created by Facebook, ReactJS also finds use in large projects like Instagram, AirBNB, and Sony websites. Developers and users like the ReactJS library because it presents modular solutions to app development. It allows developers to get exactly what they want by splitting the software code into individual segments, which can then be split into smaller segments, and so on. By working with ReactJS, our developers can deliver you an intuitive architecture that can be responsive to changing business needs.


Modular system
Modular system

ReactJS lets developers separate their code into into individual modules. This modular system allows for easier maintenance, scaling, and customization. If you want to make changes in your company, you’ll quickly be able to use the smart architecture to make those changes. Plus, several developers can work on each of the modules at once, reducing the time in development and presenting you with a product you can get off the ground quickly.

Perfect for hybrid apps
Perfect for hybrid apps

ReactJS apps look and feel like native applications, while also allowing you to build high-performance websites with SEO characteristics and reusable modules. By combining HTML and JavaScript, developers can write code that is not only powerful, but can be re-used in the future. What that means is that you can add onto your existing applications without having to rewrite your code. This will allow you to easily build beautiful user interfaces.

Gradual and easy implementation
Gradual and easy implementation

You don’t have to radically alter your existing frameworks to adopt ReactJS. You can start getting usable results with ReactJS by implementing it piece by piece. The nature of the ReactJS library is that you can use it to incrementally replace certain components of your web or native app as necessary. This way, you don’t have to make a huge investment in the ReactJS architecture until you’re ready.

Great for user interfaces and front end development
Great for user interfaces and front end development

We can use ReactJS to make beautiful and intuitive user interfaces, while also developing the front end of your website. ReactJS’s modular system means that it can be used effectively by businesses of any size. Whether you’re a startup or a Fortune 500 company, chances are that using ReactJS will improve your user experience.

Technologies We Use

ReactJS comes with certain sub technologies that we can use to benefit you.By using the technologies below, we augment the ReactJS library to bring you the most powerful form of the language.


We use Redux, a Flux library, to help prevent common bugs in ReactJS - thereby bringing you the cleanest code possible.

React native
React native

React Native increases the capability ReactJS to write fast native or hybrid applications. Using React Native, we can develop applications for iOS or Android within a single codebase—saving you time and money. Because development is faster, we can deliver and deploy the finished product faster.

Engagement Models

With all engagement models you get complete transparency and daily timesheets so you know exactly how much work is being done and when.

Dedicated  WordPress Team

Dedicated ReactJS Team

If you represent a company with regular large projects, or if your need ongoing work, ask about a retainer. It’s a pay-as-you-go monthly rolling contract. You’ll get our technical infrastructure, expertise, processes and execution abilities as easily as if we were located in the office across the hall. In fact, with this model, we effectively become cost-effective, easy-to-work with, and high-quality in-house staff.

  • No hidden costs
  • 80 or 160 hours of guaranteed production every month for part-time and full-time hires respectively
  • Monthly billing
  • Pay only for measurable work done
  • No setup fees
  • Dedicated team is better than Fixed-cost (Learn why)
Fixed Price

Fixed Price

If you have clear, well-defined requirements, you might prefer our fixed-price model. You’ll pay a certain amount that we agree on for a defined amount of work, making this a simple, transparent deal.

  • Know exactly what you’re getting up front, and how much it will be
  • Requires no change in price unless your needs change
  • Can be split and paid in milestones
  • Upgrade or cancel anytime

Why Dedicated ReactJS Team

Each employee has 3+ years of experience and is supervised by a technical lead

We pair you with developers whose talents specifically match your individual needs

No setup fees, so you only pay for the work done

Ironclad NDA's. We don't share the nature of your work with anyone

You get to choose whether to hire your developers on a full-time or hourly basis

As always, your results get delivered ahead of schedule

You'll also free project management with your team

All of this is backed by a no-questions-asked money back guarantee. Cancel at any time

Transparency is guaranteed. We share a detailed work timesheet via project management tools and Google Docs

You are protected by our…

100% Iron-Clad Triple Guarantee!

No sloppy developers
No sloppy developers

Can’t trust hired developers? Wrong! We pair you with an in-house developer whose skillsets and training are a match for your project. They will reliably and competently act as the go-to expert in their field, so you get quality work and consultation every time. And if you decide that it isn’t a good match? No problem. We will either provide an immediate replacement, or you get a refund. Under this model, you assume no risk. Either you get quality work, or you get your money back.

Get a free, no obligation estimate for your big idea
Get a free, no obligation estimate for your big idea

Get in touch. We’ll listen to your idea and provide you with a no-cost estimate, usually within 24 hours. If your vision is especially complex, it might take a little longer, but that just means we’re making sure to give it careful attention. Even if you decide not to work with us, you can take your estimate and compare it with other vendors to see who is the best fit. And don’t worry. Your idea is safe with us. We honor any and all NDA requests, otherwise we wouldn’t be in business.

Cheaper than your local guy
Cheaper than your local guy

We’re a money-saving solution. Local developers have a higher cost because they are often slower and have access to fewer resources. Working with us will be more cost-efficient, because we provide the perfect balance of competitive pricing and uncompromising quality. If you somehow the same service cheaper somewhere else, then we’ll match that price. So by working with us, you actually save money. Don’t believe us? Just ask for a quote.

Real Google Reviews

Jonas Peeters

5/5 stars


Great experience working with the Capital Numbers team. They were extremely diligent, accessible and utmost professional in their work. They were worth every euro. We are happy with the results they showed us and also the solutions they come up with to satisfy our needs. I definitely recommend working with them. It is useful to have someone on your side who does have (although limited) knowledge of IT and web hosting.

Per Peterson

5/5 stars


We have found Capital Numbers extremely easy to work with as development partners. They have been great at spending the time on the front-end of projects to understand the full scope which is helpful during development to guide decision-making and potential trade-offs to deliver on time and within budget. They're effective at integrating technical solutions with creative work and we have had a great experience with their project management.

George Levy

5/5 stars


I have been a customer of Capital Numbers for many years and multiple projects across both all my personal websites, and multiple clients. They are my most trusted partner when it comes to any web and mobile development issues.

See all Reviews

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Schedule a 15 Minutes FREE, No-Obligation Consultation

No matter where you are in the planning process, we're happy to help, and we're actual humans here on the other side of the form. Step 4 We're here to discuss your challenges and plans, evaluate your existing apps and website or even make some initial recommendations. And, of course, We're here to help any time you're in the market for web or app designers and developers.

Schedule Time To Talk

Or, Use this form to share your requirements. Get guaranteed response within 8 Hrs.


  • Deloitte Technology Fast 500
  • Deloitte Technology Fast 50
  • 1000 High Growth Comapnies 2018
  • BCC 1st runner-up 2016
  • The telegraph infocom SME of the year 2014
  • Dun and Bradstreet leading smes of india 2017
  • CII awards 2015

Accreditation & Partnership

  • ISO 9001-2015
  • Acquia
  • CII
4.4 ( 70 rating )