+49 30 258143174   hallo@app3null.com
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Your Reliable Software Development Service Provider

We're software development company that helps you
take your business idea from start-up to success.
App3null App & Web development company in Munich
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Global Presence

App3null is part of the Prestele Group, a global team of tech evangelists, providing android, iOS, custom mobile app development services.

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Technical Expertise

We love complex projects, unorthodox technologies, big data, scalability, but also simple interfaces and beautiful design.

Custom Mobile App Development

Digital transformation with mobile
apps that enable you to do
business – anytime, anywhere.

Mobile devices have changed the way we work. Using a mobile app as an innovative business solution can be revolutionary in how you deal with customers, colleagues, and the business in general.

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Secure &

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More Intuitive
& Interactive

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Better Mobile
Hardware Integrations

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Better UI/UX

Process of

Custom Mobile App Development with App3null

Mobile App Planning


Define strategic goals for evolving your idea into a successful app

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Analysis & Planning

Identify requirements, define team structure, and prepare product roadmap

UX UI Design

UX/UI Design

Create seamless and effortless user experiences with a polished design

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Custom Mobile App Development

Develop backend, API, and mobile app following agile development process

App Development Process Test


Validate your app’s quality thoroughly with a series of testing criteria

App Development Process Support

Deployment & Support

Launch app on the Apple and Google app stores with support for future revisions

App3null App Projects

Checkout some of our favorite custom mobile app development projects

Gaming App

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Genius Camp is an app that was originally developed for our own portfolio and then sold. It is a social quiz app, with single and multiplayer modes. The world’s first real-time IQ quiz app! In addition to the iOS app, a web app was developed. It is a quiz competition.

 Year: 2015
 Service: iOS, Android, Concept, Design

DOWNLOAD the app!

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Genius Camp Quiz Contest

Genius Camp
IQ Tests, Brain Games, Puzzles

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Food App

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Foodoholic is a popular recipe app, with hundreds of recipes, tens of thousands of downloads and many helpful features. The app is linked to the corresponding Foodoholic cookbook using a barcode function.

 Year: 2017
 Service: iOS, Android Apps, Backend

DOWNLOAD the app!

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Eat Better, Not Less!

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Service App

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TrackFox is a comprehensive fleet management system consisting of a web interface and an Android application.

 Year: 2015
 Service: Backend, iOS, Android development

DOWNLOAD the app!

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Track Fox
Modern Service Software

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Business App

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A successful SaaS software for B2B lead generation. The software analyses the web traffic and user behaviour on a website, identifies the visitor companies, determines the data of the contact persons and thus enables the users to get to the potential customers without any tedious lead research

 Year: 2019
 Service: Design, backend and database development

DOWNLOAD the app!

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Lead Rebel
Saas Software For Lead Generation

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Dating App

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A successful dating app with over several million downloads – programmed by APP3null! Justlo allows you to find a partner in your city quickly and easily. A very beautiful and technically complex app with an intuitive and user-friendly interface.

 Year: 2016
 Service: iOS, Android development, design

DOWNLOAD the app!

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Justlo 2

Dating App with Millions of Downloads

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Coaching App

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A beautiful iOS app for people going through a relationship crisis and heartbreak. The app offers various exercises to help overcome heartbreak.

 Year: 2020
 Service: iOS development

DOWNLOAD the app!

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Beyond Breakup
Coaching Self-Help App

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Dating App

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Marry Me Dating App was developed for a dating app provider from Switzerland. The app offers a variety of features, such as live radar, swipes, chat, gifts, etc. The app is used by over 100,000 users worldwide.

 Year: 2018
 Service: iOS development, design

DOWNLOAD the app!

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Marry me
Simple. Real. Love

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News App

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With this app you will receive information on architecture, urban development and building culture – if desired, also as a push message. Discover award-winning architecture with the mobile BDA architecture guide.

 Year: 2022
 Service: iOS development

DOWNLOAD the app!

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App3null Contact Us
Make Your App Idea A Reality

Let's talk

Let’s discuss your project idea and concept to explore custom mobile app development costs and time frames.

Discover our projects

Customer testimonials about our app agency

iOS Entwickler
Ich bin über das Internet auf die Werbeagentur APP3null aufmerksam geworden. Der Erstkontakt verlief sehr positiv, also beauftragte ich die Agentur nach einem seriösen Angebot. Jede weitere Korrespondenz verlief absolut unkompliziert, sehr schnell und absolut professionell. Ein Mitarbeiter stand für meine vielen Fragen immer zur Verfügung. Vielen Dank an Herr Svanidze und sein Team. Gerne empfehle ich Sie weiter!
Pilch Dachbau GmbH
App Agentur
APP3Null bietet einen Rundumservice für die Entwicklung von App und Webapplications. Alle Projekte von mir wurden zuverlässig und in vollster Zufriedenheit umgesetzt. Zusätzlich wurden auch Tipps zur Suchmaschinenoptimierung gegeben.
Daniel Charles Bossenz
App Entwickler
App3.0 hat für die Bayerische Fischerjugend im Landesfischereiverband Bayern e.V. unser App-Projekt umgesetzt. Geduldig, kompetent und immer zuverlässig - so können wir diese Top-Agentur beschreiben und deswegen nur bestens empfehlen! Weiter so!!
Simon Ternyik
App agency news, best practices, useful insights

Learn more about custom mobile app development

Find below some of our

Favorite App projects in Germany

Delivery Hero Mobile App Development
RA- Micro mobile app development
Bringmeister App development
Apps with love by App3null
Europäische Reiseversicherung Mobile App development by App3null

FAQ about custom mobile app development

How long does it take to develop an app with App3null?

While a basic version of a mobile app can take up to three months to develop, complex mobile app development can proceed for nine months.

There is no time limit as such to create a fully functioning mobile app for your business. The time it takes to complete your mobile app development project will entirely depend on the external factors you need to consider.

What are the costs of custom mobile app development?

The cost of an app varies, even among apps that belong to the same category (e.g. dating apps or logistics apps). Costs for basic apps are usually around 5,000 euros. There is no upper limit, depending on the duration and complexity, a mobile or web app can cost 100,000 euros and more.

Read App3null average mobile app development cost in 2022. We give you a deeper insight into the factors that exert an influence on app development costs. At the same time, we list sample budgets for different apps.

What are the prerequisites for a custom mobile app development project?

Anyone who has made it this far will be rewarded with a short summary of what is important for successful app development:

Define clear goals, set KPIs for the project.

Design the concept, provide the developers with sufficient input.

Allocate sufficient budget with enough buffer.

Select the best partner agency for your idea

If you want to be on the safe side, you should contact us directly and don't keep looking forever, because we are an agency where software projects don't fail.

How can I find good investors to fund my app development?

Your app development project can’t kick off without the essential funds. There are many ways to find reliable investors for your app development.

There is a large amount of grants and funding that want to advance the topic of digitalization. We help you with both the application process and the development. Together, we apply for funding for your project and implement it. For more specific information you can visit our page about subsidies for digitalization

How do we communicate with the project or software development team?

Permanent coordination and communication with the developers is another important factor for the success of your project. If you have your app built by an agency, you should hold regular meetings or calls. At APP3null we have weekly calls with our customers. Regular face-to-face meetings don't hurt either, provided the circumstances allow it. However, online meetings and calls do not have a major negative impact on the projects and sometimes reduce the time required for travel etc.

Do you develop a mobile app for all platforms?

Yes, we build mobile applications for all major mobile development platforms. You can hire our app developers for creating an app for iOS, Android and hybrid. Whether you want to develop apps for just one or two platforms or want to develop an app that works on all the mobile platforms, we are at your service.

How much does a chatbot cost?

The question “What does a chatbot cost?” cannot be answered in a blanket way. As always, the price depends on how complicated the solution should be. As a summary, we can again list the factors that influence the price of a chatbot:

1. building block system vs. programming required.

2. standard backend (from a third party) or own custom backend.

3. standard integration (Facebook, Telegram, etc.) or custom integration e.g., into own website.

4. predefined question-answer tree or AI-based.

5. number of various integrations: from no API integration to complex integration from various sources (e.g., CRM, ERP, HR software, etc.).

Hopefully, we were able to help you with this article about chatbot costs. If you have any questions or inquiries, please contact us by mail: hallo@app3null.com, or call us: 030 47050285

What if I want changes to be made in the app once it is launched or delivered?

As soon as you have accepted the project, the source code and ideally also the corresponding rights must be transferred to you. For successful operation of the developed app, it must be regularly updated and maintained. This also applies to the monitoring and optimization of the server infrastructure. Typically, software companies offer this service. With APP3null, software maintenance and support is an optional part of the offer. All successful software needs further development and occasional updates since there is a need for new functions on the one hand and the source code has to be brought up to date on the other.

Which framework or programming language would you use to develop a mobile application?

The framework or programming language that we use to develop applications depends upon the chosen platform by the client. We are very familiar with Android Software Development Kit (SDK), Kotlin,Java, Dagger , ReactiveX / RxAndroid, OpenGL, 3D Graphics, Location-based Service APIs, Android Security Architecture and other technologies. Our hybrid app developers use the following technologies: We are very familiar with Xamarin, React Native and Flutter, as well as 3D graphics, location-based service APIs, mobile app security architecture and other technologies.

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