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Full-Cycle App Development Services

We provide full-cycle app development services to keep your business up to date and save your connection with customers in our fast-changing world.

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Your trustworthy partner for the end-to-end development process

Making our custom expertise global, we help businesses adapt to new conditions & expand their opportunities.

Outsource full-cycle development process to Interexy

We’re an effective team of focused experts from different areas.

Perfect quality and success of the developed products.

Our vision is to make the business of our client a better place


Keep up with the mobile-first world!

Get in touch to build a multifunctional, user-friendly, secure mobile app for your business.

Share your core business idea, and we’ll take care of the rest

We adapt to innovative technologies immediately and provide next-gen expertise to save you time and money on full-cycle mobile app development services. Thanks to high-quality standards we keep sustainable and reliable app functioning even in unstable conditions.

Tight Testing Process

We emphasize the value of testing and make sure the software meets your expectations in terms of quality and will be extendable and stable for large user audiences.


We ensure both structured & standardized processes along with a human approach in place. It helps us achieve clarity of processes and quality of work.

Control & reliability

We take care of each stage of the full-cycle app development and use technical creativity to implement your business idea in the best way.


With deep specialization in full-cycle application development, we dive into innovative processes & provide new app development solutions that have not been on the market yet.

Specialists Support

Every member of our team works specifically with mobile solutions, which improves the quality of the projects we’re working on, differentiating them on quality from the competitors.

Interexy’s experience in Full-cycle Development

Crumb app screenshot


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.

One Rover

One Rover is a leader in Rideshare cost savings, options, and satisfaction. A Rover is a professional partner Driver that is dedicated to providing robust commute options to One Rover platform users in boundless locations around the world.


Develop a stable mobile solution for existing SaaS web-based products to automate logistics & items scanning activities for employees in cannabis businesses.


During the development process we faced different issues, some of them: 1. Building a product from scratch 2. Matching Algorithm, Geofencing & Driver Payments 3. Different Applications for Different Entities


In partnership with our full-cycle mobile app development company, One Rover had the application delivered on time & on budget. Even though we had multiple alterations through the development process: we modified the design several times to adjust to a changing target audience & marketing team requirements.

One Rover app screenshot

How our end-to end development team works

01. Requirements &
Specification & Estimation
UI/UX Design
Testing & Bug fixing
06. Launch (AppStore &
Google Play approval)
01. Requirements & Qualification
Specification & Estimation
UI/UX Design
Testing & Bug fixing
06. Launch (AppStore & Google Play approval)
01 Requirements & Qualification

The very first stage that our full-cycle app development company does is meeting your account executives to define relationships and factors in the requirements that we need to develop.

02 Specification & Estimation

After the specification is completed, we’re providing you with an estimation for the product with a break-down of budget & timeline divided into sprints for the whole product development.

03 UI/UX Design

Using the insights from the mockups & wireframes prepared during the Specification development process, our full-cycle mobile application development company fleshes out the journeys and states to create a clear, seamless, and delightful user experience.

04 Development

The fundamental stage, which success is based on well thought-through project structure and effectively performed previous steps. During the development process, you can suggest any features you would like to carry out.

05 Testing & Bug fixing

We have testing & bug fixing as a separate stage of the process – and that’s why we provide top-notch full-cycle mobile application development services.

06 Launch

We develop applications that fully meet market requirements. When the application is fully ready, we publish it on Google Play and App Store and take on any questions that may arise during its publication.

Keep up with the mobile-first world!

Get in touch to build a multifunctional, user-friendly, secure mobile app for your business.

Post-release support

The after-launch support of the developed application requires supplementary control to ensure functional consistency and future successes of the application on the market.


40 hours / month

Basic Plan

40 hours* of Developer support

*Hours do not carry over to the next month
*2 business days inquiries response time

3 month

Minimum Package
10% OFF

80 hours / month

Essential Plan

80 hours* of Developer support

*Hours do not carry over to the next month
*1 business days inquiries response time

6 month

Standard Package
5% OFF
20% OFF

160 hours / month

Unlimate Plan

160 hours* of Developer support

*Hours do not carry over to the next month
*Immediate inquiries response time

12 month

Yearly Package
10% OFF

Full-cycle app development with Interexy best choice for

Process Digitalization

Building new digital ecosystem

B2B Startups

Our Industry Expertise and
Business Verticals

Technology expertise for solid solutions

React Vue.js

React Native (JS, Typescript, CoffeeScript)

ML & AI for Apps

PHP, Python, Ruby on Rails


Native iOS (Swift)


Kotlin Multiplatform


Android (Kotlin, Java)


Flutter (Dart)

Technology expertise for solid solutions


Jason Kelley

Founder @MUSL

“I was always looking at where it intersects with the skill base of the team and the customer service, communication, project management. You can have a really amazing team of talented developers and programmers but you’re going to end up spending a great deal of your time actually trying to self-manage them. Versus you have the opposite which is really good project management and really excellent communication but not so great development team. And what I’ve enjoyed working with Interexy is the fact that I get both of those pieces together and that has been very satisfactory.” Read more

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.” Read more

Will von Behr

Founder @ Urbs Travel

“I got an amazing product that was exactly what I envisioned when I first sat out & drew the plans. The two areas that I think where Stan & his team particularly excel: first is attention to detail (…) & secondly the kind of support they’ve provided after the app was largely complete. I’m sure the number of teams just do the bug work & leave it but they are [Interexy team] always on hand to answer any questions really at any time of day which is incredible.
So I’d encourage anyone who wants to build any sort of product to use Stan & his team. It’ll accelerate your business and make your life a whole lot easier.”
Read more

Rob Fedun

Founder of Tinga Nutrition Inc.

“I was very impressed by their level of knowledge, willingness to learn, creativity and customer service. They are a growing company and take this opportunity very seriously, looking to learn from their overall process and client interactions. Interexy LLC is in line with our expectations and they are always available.” Read more

Explore our latest projects case studies

Take a look at some of the iOS and Android apps we developed.
Let’s find out if we’d be the right fit to collaborate.

Ways to Engage with us

Or fill the form below / email us at or give us a call at (239) 719 2347 (8:00 am to 5:00 pm pacific time)