iPhone app developer Amsterdam

Joost Gunterman

Need more info?

Please feel free to contact us via phone or email. We will be happy to help.

DTT your iPhone app developer

Are you searching for a suitable partner to develop your iPhone app? Then you are at the right place. No challenge is too big for us and the motivated team of DTT knows exactly how to make sure your idea develops into a unique app of high quality for iOS. We make this possible by creating the right combination of technique, strategy and creativity to your idea. DTT is known as a reliable, flexible and fast app developer with an eye for results and quality. 

Two iPhone apps from previous collaborations:

King Penguin Greenpeace app
Greenpeace was looking for an app developer to get more reach and attention for their campaign ‘Protect the Antarctic Ocean’. They found the right partner in DTT to develop a creative app for their campaign. In a relatively short period of time the King Penguin Greenpeace app was developed.

Users of the app can look for penguins via augmented reality. A variation of the popular Pokémon GO app, but penguins instead of Pokémon. The app has been released recently and well-known Dutch media such as the tv program Koffietijd from the channel RTL4 and the radio channel BNR already talked about the King Penguin Greenpeace app.

RIVM Tick bite awareness app
The Dutch National Institute for Public Health and the Environment (RIVM) was looking for an app developer to develop and to inform users about ticks and Lyme disease. They went to different app developers and decided DTT would be the best partner for their project. According to RIVM, our dedication during the first meeting and our rates were definitive reasons for their decision to partner up with DTT.

The result of this collaboration is the RIVM Tick bite awareness app. The app has different functionalities, for example a tick-radar, in which users can easily see if there are ticks in their area. There are also video instructions for checking, removing and treating ticks in the correct way. We are proud of the result, a week after the completion of the RIVM Tick bite awareness app, it was number 1 in the category of healthcare in the App Store. Next to this, well known Dutch media such as the news channel NOS and the magazine Margriet wrote about the app.

BEDRIJFS-APPS ontwikkeld door DTT

business apps

DTT has extensive experience in developing business apps for both public and in-house distribution. We have developed such apps as ING Marketing day app and BAM Inspiration solution.

CONSUMENTEN APPS ontwikkeld door DTT

consumer APPS

Our aps have great succces in the app stores. Among our most popular apps are RIVM Tick bite awareness app , Doula Labor Coach app and OSR Augmented Reality app.

Game apps ontwikkeld door DTT

Game apps

Game apps are an effective and fun way to support a campaign and increase customers' loyalty. Our most fine examples of the developed games are Krasloten December game and PokerConnect app.

WEB OPLOSSINGEN ontwikkeld door DTT

WEB solutions

Apart from apps DTT specializes in developing sucessfull websites for different purposes. HG Webshop and HG Order Portal are few examples of the web solutions we have made.


Native versus cross platform

Nowadays iOS is, together with Android, by far the most used platform for apps. Apps can be developed for a specific platform (native app) or for multiple platforms (cross platform). Both options have their advantages and disadvantages. Which option is right for you, depends on who and what you want to reach.

If you want to create an app specifically for iPhone, a native app could be a good choice for you. In this case, an app will be specifically developed for iOS by the team of DTT, so the possibilities of this platform are utilized to the fullest.

A good cross platform app can adjust itself well to different platforms, and therefore, also to iOS. But a native app does not have to adjust itself. An easy way to compare the two, is by seeing a native app as a local and a cross platform app as a tourist. A native app reacts intuitively and flawlessly to a platform, while a cross platform app needs to actively adjust itself. Besides this, during the development of a native app, all the possibilities of iOS can be used, while this is more limited with the development of a cross platform app.

Whether you already made a choice between native or cross platform development or if you could use some help in this, we would be happy to have a talk with you about the possibilities for your app. Partners we worked with before are very positive about our way of working and our results. At DTT we like to prove to you how experienced and motivated we are in our profession. We put ourselves in your place to understand your needs and fully commit ourselves to develop an app which meets your targets and demands.

Are you curious about the possibilities DTT can offer to your idea for an iPhone app for your organisation? Don’t hesitate to contact us, we would be happy to have a (non-obligatory) talk with you about your possibilities.

Testimonials from our clients


Greenpeace Nederland

Ehtimaad Rais, Online Campagner

"Speaking for both myself, Joost and the entire projecteam, I would like to thank DTT deeply for your efforts. We are thrilled with the end result!

When we approached you with the request to make penguins appear everywhere in the Netherlands through AR, we received an exceptional proposal. A very entertaining elaboration of our campaign to make the South Pole a protected marine reserve. Together we quickly came up with the name for the King Penguin app and fun occasions to use the app so everyone can search virtual penguins via AR in their own neighborhood. By combining this quest with information about the animals and their threatened environment at the South Pole, awareness is created in a playful way. And that's exactly what we wanted. Once again, compliments on how fast you brought this amazing app into the digital world. I experienced it as a very pleasant collaboration."



Desirée Beaujean, Head of Development and Implementation Department

"The RIVM (National Institute for Public Health and Environment) had the "Tick bite" app launched in April 2014. This app was initially developed for Android. With this app people can check what ticks are and how to correctly remove them (even without internet connection!). Starting from July 2014 the app will be available for IOS also.

In the beginning we have spoken with a number of potential executors and we chose for DTT. What struck us was that from the very start DTT was very involved in the issue and the development of the app. The rates were reasonable and certainly played a role in choosing DTT. During our collaboration, we got to know Jeffrey and Dirk better. We emailed and called eachother so often, we even noticed the urge to contact them when it wasn't necessary. I think that says enough!

In short, DTT has been a great partner to develop an app. They are reliable and always up for a joke. Great job!"

Joost Gunterman

Need more info?

Please feel free to contact us via phone or email. We will be happy to help.