We are your iOS App Agency

Our experts work with you to develop the perfect iOS app
Full service
Personalized apps
Time and cost efficient

4 reasons why we should develop your iOS app

Your application as you have always imagined it
All-round support

From the planning and design of the iOS app to the completion and aftercare of your project, Cayas is your reliable partner.

Your app - your device

Our experts plan and develop the implementation of your app for iPhones, iPads and MacBooks or as a web application.

Individual app programming

We plan, design and develop your app according to your needs - you decide how our iOS app agency supports you.

Work with a quality guarantee

In our daily work, we rely on native interfaces and APIs to offer you the highest quality in every step of the process.

All-in-one solutions and team support

Mockup einer iOS App

All-round service from your iOS app agency

At Cayas, you choose how we support you and your project

The first option is for our agency to take over the entire project. We plan, design and program your iOS app and continue to support it after the go-live. A second option would be supporting an existing project team until go-live, without any further follow-up support. In both cases, we attach great importance to working in a customer-oriented and quality-oriented manner.

More about Expert-As-A-Service

Arrange a free appointment with our iOS app specialist now

  • Personal consultation with our managing director.
  • Together we will find the right app technology for you.
  • Get clear insights and recommendations on how to successfully implement your app ideas.
Request now without obligation
Sebastian Seidel, Managing Director Cayas Software GmbH

4 simple steps to your app

The perfect iOS app for your target group


No obligation request

Contact us directly and without obligation using our online form.


Personal consultation

Together we will work on a suitable concept for your company.


iOS app development

We develop or customize your app so that it fits your company perfectly.


Satisfied customers

Increase customer satisfaction with a user-friendly app.

The success stories of our app customers

Big visions, small ideas, joint success
Sascha Willam

As interim team leader, Sebastian Seidel has not only laid a good foundation for the driver app. The team that he handed over to me also demonstrates his experience in dealing with people and technology.

Sascha Willam Teamlead Driver-App flaschenpost
Kim Dallmer-Zerbe

We already knew Cayas Software from a joint workshop and that's how we came to start a joint project. The quality that we then received in the development of the warehouse logistics app was absolutely professional.

Kim Dallmer-Zerbe DSP Project Management
Klaus Seidl

The .NET MAUI development with Cayas Software has provided our team with all the necessary aspects of app development to get started in this area.

Klaus Seidl Director Software Development Thieme-RECOM
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Questions & Answers

Experience has shown that the development of an app usually takes 3 to 5 months. As a precaution, you should allow a little more time for larger projects, while smaller projects can be completed more quickly. The following phases are run through in a development process:

  • Planning Duration 1 to 2 weeks. In this phase, the idea is worked out and a concept is created that contains the exact requirements for design, performance, functionality and quality.
  • Design & prototyping Duration 3 to 4 weeks. In this phase, slight adjustments can be made. An initial prototype visualizes the look and feel of the app.
  • Technical app development Duration 6 to 12 weeks. By combining the design with the functionalities, the app comes to life and comes very close to the final product.
  • Quality assurance Duration 3 to 6 weeks. Once the app programming has been completed, the app is checked for the functions and designs developed and any deviations are corrected.
  • App release Now the app is ready for the store release. This means it is uploaded to the App Store and is available to the public.

We offer comprehensive support during the development process, especially in the area of cross-platform app development for Android and iOS. We offer services such as the development of warehouse logistics apps, integration into existing teams to overcome bottlenecks, project management and consulting.

Cayas Software positions itself as a full-service partner and emphasizes high-quality and cost-effective solutions.

The choice between an app and a website depends on the specific requirements and goals. Here are some advantages of apps compared to websites:

  • Offline access Apps can also be used without an internet connection, while websites require an active internet connection.
  • Better user experience Apps are specifically optimized for mobile devices and offer a smoother and more user-friendly experience than websites.
  • Access to device features Apps can access device features such as camera, GPS, microphone and notifications, which is not always possible for websites.
  • Personalization Apps can deliver personalized content based on user preferences and behaviors
  • Faster access Apps can be launched directly via icons on the home screen, whereas websites need to be accessed via a browser.
  • Better performance Apps are often faster and more responsive than websites.
  • Monetization opportunities Apps offer various ways to monetize, such as in-app purchases, subscriptions and advertising.

Cayas Software GmbH has developed a variety of cross-platform apps that cover different industries and use cases. The app types they have developed include:

  • Warehouse logistics apps: These apps optimize warehouse processes and improve efficiency in logistics.
  • Driver apps: Developed for delivery services to enable drivers to navigate safely and efficiently.
  • Voice command integration: Implementation of voice commands in apps to increase user-friendliness.

We also offer training and support for teams who want to expand their app development skills.

Customized app solutions for Apple users

In-house apps
Customer loyalty apps

Over the years, we have specialized in two areas of app development in particular. On the one hand, we specialize in the development of company-internal apps to increase the efficiency of processes, and on the other hand in apps for customer loyalty that enhance existing products. The experts at Cayas are, of course, also the right contact for various other app types and develop customized solutions with dedication and vision.

Migrating old apps

Sometimes you don't need anything new - migrating existing apps is enough. We can modernize iOS apps and make them accessible to Android users by integrating them into the .NET MAUI platform, for example. Functionality and user-friendliness are thus retained, but the potential customer base can be significantly increased through platform expansion and modernization.

Bild von Sebastian Seidel
Bild von Teammitgliedern

We also realize your cross-platform and Android projects

Zwei Männer mit unterschiedlichen Devices für verschiedene Plattformen
Cross-platform projects with .NET MAUI

We rely on Xamarin and .NET MAUI when programming apps, which allows us to create cross-platform solutions. We design the user interfaces of the apps in XAML, which allows us to work very efficiently in the process and save around 30% on development time and costs.

Zwei Männer betrachten vor einem Laptop ihre Arbeit
Android App Development

We not only develop apps for Apple devices, but also support Android projects. In order to guarantee native performance, we rely on Java, Kotlin or .NET for Android, depending on the application. In this way, we increase development efficiency and at the same time ensure robust, user-friendly Android apps.

Sebastian Seidel, Geschäftsführer Cayas Software GmbH
Still have questions?

Are you interested in a Cayas service, but are still unsure and want to find out more?

Our expert will be happy to help you.

Koenigstr. 53, 32427 Minden, Germany


+49 (0) 571 82 92 58 10

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