On Demand Mobile Application Development

We’re a cutting edge on-demand app development company for technology startups that create universal applications for the B2B market and for businesses to digitize their processes through cutting-edge app development solutions.

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Mobility is the key to the progress and evolution of an on-demand business

Just look at some statistics:

25 Billion

The annual growth rate of the on-demand sphere revenue is expected at about a 6% level in the next 4 years, which should result in a market volume of about $25 billion by 2023.



42% or 86.5 million Americans have used on-demand mobile application development services.

693 Billion

By 2021 mobile app market revenue is expected to reach $693 billion.

9 999

However, almost 9,999 in 10,000 mobile apps fail.


Build loyalty with clients and succeed with integration of a high-quality and multi-compliant app that correlates with business goals and its clients’ needs.

Case studies

Interexy with contemporary technology stack enhances and adapts innovative ideas to modern requirements to meet business goals.

Adapt and sustain your business

A mobile application that fully covers the needs of your business in digitizing.

Digitize My Business 01/03

Realize your business idea

Complex development solutions that allow the creation of robust and powerful apps.

From Web to App 02/03

Create compliant product

Solutions that meet business needs & offer exceptional customer satisfaction.

App development 03/03
01/03 02/03 03/03

Industry sectors we’re professionals in

Food delivery App

Meet the latest food business trends, stay tuned for demand and boost your sales and marketing with apps like Uber Eats and Glovo with an on-demand application development company.

Healthcare App

Crucial in case of emergency. Give an opportunity to patients from remote areas to get immediate access to healthcare services.

Case study

Pharmacy Delivery App

Extend the boundaries of customer capabilities, especially elderly people as well as people with medical conditions through on-demand mobile app development services.

Case study

Professional services App

Give the possibility to hire professionals for any work. It also offers all professionals an employment opportunity.

Case study


Digitize your business with modern mobile app technology and attract new customers with logistics app like Uber that rocked the world already.

Case study

Real estate

Help users explore and buy properties across their desired locations. Simplify communication with the owner of the properties in all issues.

Case study

E-commerce on-demand services

Enable users and retailers to buy and sell almost everything they need with help of interexy’s on-demand mobile app development services.

Case study

Core technologies used to build functional mobile solutions

Payment gateway integrations

AR/VR for Apps

ML & AI for Apps

Social features

Camera functionalities

Location management

Essential Notifications

The Wishlist Feature

Visual Appeal

Ratings & Reviews

Efficient Customer Care

Authentication and Security

Easy Interface

Activity List

Core technologies used to build functional mobile solutions

We ensure:

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& stability


Fresh minds

Structured and professional communication

Responsiveness and responsibility


Relevant cases &

Well-balanced & effective on-demand app developers

Post-production product support and scaling

What the app looks like

See our customers’ evolution


Hamburg-based fintech health startup mobile application based on the idea of rewarding users for health & fitness activities


Creation of the first MVP for the company from scratch based on a project that was created in a very short time to convince investors of the need for a financial round.


We decided to rewrite the whole product from scratch, using native iOS development technologies. HealthKit integration was one of the main reasons for us to make this kind of decision since the app was built using cross-platform React Native technology.


We got to the top 17th of the German Health & Fitness App Store page — the product was competing with a multi-million dollar application, and we built an MVP within 1.5 months with under a $20k budget. Awesome user reviews are the best validation of the work done.

Read case


Saad Saeed

Founder & CEO @ Crumb

Within its first nine weeks, the app received 8,000 users and a 4.7-star rating. The platform is well-designed and hasn’t had many bugs. Interexy LLC is fast and efficient at building new features as well as taking scope changes in stride. Expertise and responsiveness are hallmarks of their work.

Christian Marougi

COO & Co-Founder @ Vloggle, LLC

Great work! They were able to adapt to our current codebase very well, and successfully completed all the required features. Will definitely come to them again for future projects!

Peter Larsen

Managing Partner @ Candor Venture Partners

Interexy were great. Extremely responsive and easy to work with. Very knowledgeable and efficient with iOS. Will definitely use them in the future!

Peter Standish

Founder & CEO @ Risk Mentor

Good builders of iOS and Android apps

Nik Ivanoff

Co-Founder @ The Collective

Best Developer around. Every aspect we needed, they had it covered with resources in their group, it was amazing. Cannot wait to work with them again.

Ernest Wolfe

CEO @ Wolfe Education Solutions

Stan & his team are hands down one of the best developers I’ve worked with on this site. They did the job quickly with the utmost professionalism, and on top of that their code was very well documented and organized. One of the best iOS Swift developers on Upwork whom I recommend as highly as possible!

Armen Youssefian

Co-Founder and CMO @ ARK Behavioral Health

Stan & his team has been very easy to work with and extremely professional from our first contact. I would strongly recommend them for IOS App Development.

Austin Wood

CTO @ JustHive

Interexy team are great developers. Very good communication and easy to work with. I would hire them again.

Ways to Engage with us

Fill the form below or email us at info@interexy.com or give us a call at (239) 719 2347 (8:00 am to 5:00 pm pacific time)