Mobile App Development Services

Build your iOS and Android apps with us and discover new possibilities mobile technologies can offer.

 

 

Comprehensive approach to mobile app development

Android

Android app development

Apple iOS

iOS app development

Flutter

Cross-platform app development

Icon: smartphone

UX/UI Design

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QA tests

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Project management

Our mobile app development services

Native iOS and Android apps

Designing UI in native apps

Find out when it's best to choose a native app.

We offer mobile app development services with a special focus on native iOS and Android software. To achieve desirable results, we use Swift and Kotlin. Our native mobile apps guarantee smooth performance even when they offer multiple features based on system components. We customize gestures and navigation elements, so they are adjusted to either iOS or Android standards.

Designing UI in native apps

Find out when it's best to choose a native app.

Find out more

Cross-platform apps

UI building in cross-platform apps

Get to know the benefits of cross-platform app development.

If you want to reach users of Android and iOS devices with one application – choose a cross-platform technology. It’s recommended especially when the app is simple and doesn’t have too many features based on system components. At Holdapp, we develop cross-platform apps with Flutter technology.

UI building in cross-platform apps

Get to know the benefits of cross-platform app development.

Find out more

Native or cross-platform technology:
which is best for mobile app development?

Sometimes, it’s hard to decide what kind of mobile app would be the right choice for your project. This is when the Product Design workshop comes to the rescue. Take part in a session and find out what solutions are recommended in your case.

Find out more

Mobile app development process

Every mobile app is unique and has to be treated individually. But at the core of each project there’s an optimized development process that allows us to work efficiently and create products that bring real profit to your business.

1

Kick-off

Before we write the first line of code, we need to take care of organizational issues. Our team meets the client, and we all introduce ourselves, so everyone knows, what are the responsibilities of each person. Then, based on the concept of an MVP, we estimate the cost of a project. It’s also the time when we talk about communication channels and tools. At the end of this stage, we inform the client about the upcoming activities and deadlines.

2

Preparations

Now, it’s a moment when our app developers get to know the scope of the project. Then they analyze it and try to identify the risky areas. They also choose what tools we need to create the mobile app. At this point, the entire team together prepares the initial version of the backlog.

3

Design

It’s an optional stage in a product development process when we prepare a UI/UX design. We conceive the projects based on wireframes, personas, or other tools that help us create both functional and aesthetically pleasing designs.

4

Development & testing

We work in iterations, according to Agile development guidelines. Over the course of one iteration, the team meets every day and exchanges the info about the current status of progress. When the iteration is finished, a quality assurance specialist tests the product. We also conduct retrospective meetings to discuss what worked well and what needs to be improved. We want you to know that with us, you’re always kept in the loop. We regularly show you what we’ve created, so you can see if the project moves in the right direction.

5

Product release

We take care of the entire distribution process, so you don’t need to do it all by yourself. It’s on us to make sure your mobile applications meet all the requirements Google Play and Apple App Store have. We’ll let you know what legal and marketing materials you should prepare. We can also advise you on ASO-related issues.

6

Maintenance

Think of this stage as a second part of the Development & testing phase. This is when our mobile app developers improve the product, make sure it’s stable, and add new features. When the new version of the application is tested and ready to go, we get back to the Product Release stage and begin the distribution process.

Languages & technologies

Native apps

Cross-platform apps

Clients

answear logo
forBET logo
Egmont logo

Build your mobile application with us

9
YEARS ON A MARKET
7
YEARS OF AV. DEVELOPERS' EXPERIENCE
60+
PROJECTS
30+
CLIENTS

Our mobile app development team

Łukasz

Łukasz

CTO & iOS Developer

Bartek

Bartek

iOS Developer

Marek

Marek

iOS Developer

karolina ios developer

Karolina

iOS Developer

Wojtek

Wojtek

iOS Developer

Kacper

iOS Developer

Grzesiek

Grzegorz

Android Developer

Dominika

Dominika

Android Developer

Piotr

Piotr

Android Developer

Igor

Igor

Android Developer

About our mobile app development services

Why choose our software development company?

Our team has been creating mobile apps since 2012. We have only accomplished developers on board, with at least 4 years of experience in software development. So, if you decide on creating your app with us, you can rest assured that the project is in good hands.

We’re the app development company that likes challenges and out-of-ordinary projects. This approach allows us to make software that gets recognized not only by our clients or users. Our apps have been nominated for the Mobile Trends AwardsAnswear in 2017 and DaNoize in 2020. We’ve also developed the award-winning mobile app for a sports betting company forBET.

What do we offer as a part of mobile app development services?

We do our best to answer clients’ needs, so we offer a comprehensive approach to mobile app development. If you want to polish your idea for an application, we can run a Product Design workshop for you and your team. Additionally, we can prepare UI/UX designs.

Our main field of expertise is mobile app development – we specialize in building native iOS and Android apps. We also develop applications for two platforms with Flutter.

As a mobile app development company that considers quality a priority, we offer QA services. Our testers carefully check all our products before they get published on the app stores.

Project management is another service we offer that helps us work efficiently. If you decide to develop a mobile app with us, we can either assign you a dedicated project manager or our software developer can become a technical coordinator, instead.

Pricing models for mobile app development

We often cooperate with clients based on a time and materials model but sometimes, we also sign a fixed price contract. The latter is usually recommended when you want to develop an MVP or your budget is limited.

Times and material is a more flexible model that increases the chances to build a top-tier, marketable product but it’s less predictable when it comes to budget and deadlines.

Here you can find more info about these two billing models that can help you choose the best one for your project.

Efficient cooperation even in different time zones

We’re a software development company based in Europe. We have our office in Poland but we cooperate with clients from all around the world. Even if team members live in different time zones, we can adjust our meetings accordingly, so everyone could be actively involved in a mobile app development process.

Our projects

Forbet app for Apple watch
forBET - iPhone app
Project

Legal Bookmakers Award 2019:
1st prize in Best Mobile App category

android / ios

forBET

Native app for one of the leading bookmakers in Poland. With forBET users can make sports bets anytime and anywhere. They also can stay up to date with current promotions and upcoming events.
Find out more
Answear mobile app
Aplikacja Answear - widok główny
Project

Nomination for Mobile Trends Awards 2017 in M-COMMERCE category

android / ios

Answear

M-commerce app for online fashion retailer with more than 80 000 clothes, shoes and accessories from over 300 brands, including Adidas, Nike, Tommy Hilfiger, DNKY and Valentino.
Find out more
DaNoize iOS app
DaNoize app
Project

Mobile Trends Awards 2020: nomination in Sport & recreation category

android / ios

DaNoize

Native iOS and Android apps for sports fan who can use it to support their teams with cheering even if they cannot watch the game from the stands.
Find out more
CoinDeal iOS app
CoinDeal mobile app - wallets
Project

android / ios

CoinDeal

Native Android & iOS apps for one of the safest cryptocurrency exchange platforms in the world. CoinDeal lets users buy and sell cryptocurrencies by choosing from over 50 currency pairs.
Find out more

Learn more about mobile app development

Layout design elements

5 Reasons Why You Should Build the UI in ConstraintLayout

ConstraintLayout is a popular solution that Android developers use every day. And not without a good reason. If you’re at the beginning of your journey as a software engineer, get familiar with the most important features this layout can offer. It will help you understand the way it works, and Android app development will become easier.

Read more
Duplex communication system with WebSockets on iOS

WebSockets on iOS – Real-time Communication That Doesn't Slow Down the App

When you want to download data for the app, you probably use API RESTful interface. All it takes is to ask the server for the data and that’s it! This method works well when the app doesn’t need permanent access to new information. But what to do if the content has to be updated in real-time? A delay can make it impossible for the user to buy an item or make a sports bet, for example. But there’s a solution – WebSockets on iOS. Check out why you should implement them, and how to do it.

Read more
iOS Localized Notifications

How to Send iOS Notifications in Different Languages? Guide to Dynamic Localization

The best way to set a connection between a user, provider, and an app? System notifications. They allow users to get the latest news in no time. This solution is easy to implement in apps dedicated to one market. But it gets complicated when the messages must be displayed in many languages. In such cases, the dynamic localization of remote notifications can be a real game-changer.

Read more

Check our other services

Desktop

Web app development

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Product design workshops

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