Together with our clients, we get the most out of digital solutions.
Do you want to create an iOS app that strengthens your brand and truly engages users? At DTT, we help businesses turn their ideas into high-quality iOS apps for iPhone, iPad, and Apple Watch. With our experienced team of iOS app developers, we build apps that not only look great but also offer an exceptional user experience. We are ready to bring your vision to life....

Meet with our digital experts


Event app full of news and experiences
The Royal Navy Days
Event app full of news and experiences


Work more efficiently with a customised business app
BTB-Tech
Work more efficiently with a customised business app
Accessible psychological support for everyone
OpenUp
Accessible psychological support for everyone

Loyalty app
Belgium's largest garden center, now also as an app
Garden center Famiflora, for garden, deco and animal, is a household name in Belgium. To serve its loyal customers even better, we worked with Famiflora to create its own loyalty app. For every euro spent, users save two Famiflora loyalty points. They can redeem these for discount coupons or other fun rewards. Furthermore, the app offers convenient features while shopping, such as a barcode scanner. The loyalty app solution enables Famiflora to gather valuable insights and further enrich the shopping experience for its most loyal customers.



The welfare app for students at Erasmus University Rotterdam
ROOM
The welfare app for students at Erasmus University Rotterdam


The community platform that connects hospitality businesses and guests
Fundie Feeds
The community platform that connects hospitality businesses and guests


Personal running training with Lotte van Leeuwen
RUN A LOTT
Personal running training with Lotte van Leeuwen
Digital addiction treatment
Always a buddy nearby with the innovative SupportRadar.
The Jellinek Minnesota app changes lives by supporting people with addiction problems. Based on the Minnesota model, this care app provides a close-knit community where participants can find, encourage and support each other.


Greenpeace protects Antarctic Sea with Augmented Reality
King Penguin
Greenpeace protects Antarctic Sea with Augmented Reality

A luxurious high-end app for the best restaurants in Amsterdam
Elizabeth on Food
A luxurious high-end app for the best restaurants in Amsterdam


Innovative tyre management from A to Z
Casing Monitor
Innovative tyre management from A to Z

Levi
Technical director
iOS is Apple's operating system for iPhones and iPads. Using various techniques, we build top-notch experiences for iOS users.
iOS is Apple's operating system for iPhones and iPads. Using various techniques, we build top-notch experiences for iOS users.
Good references for successful collaborations.

Sander Verheijen
Editor-in-chief
"Our beautiful Hebban Books App was built by DTT in Amsterdam. A partnership we are still super happy with."

Harjo Keizer
Advisor innovation healthcare and IT
"We got to know DTT as a nice club to work with, a proactive attitude and thinking along with the client are highly valued. At the start of the collaboration, we went deeper into strategy and concept with DTT, followed by the delivery of a creative strong design with strong gamification elements. Furthermore, their organizational strength and process-oriented approach made us move smoothly and steadily towards a beautiful final delivery."

Andries Takke
Director Takke Breukelen B.V.
"We at RTRI are incredibly satisfied with the app developed by DTT. Everything has been thought of. Moreover, a very complex caching mechanism was used, because a lot of data is loaded into the app (over time). A clever piece of work, in which we experienced a very fine cooperation."

Mustafa Demirayak
Project lead
"After working with DTT for 2 years, the end result was very positive. DTT is still working on the new developments for our company app. The new app helps our employees work faster, more efficiently and effectively. Great to see that everything within our company is completely automated, thanks to the thinking team at DTT. Doing Things Together."


Digital support for safety training
BHV-H
Digital support for safety training


Over 18,000 pupils trained in CPR
I Save Lives e-health app
Over 18,000 pupils trained in CPR


A future-proof smell training app for people who have lost their sense of smell and taste
Smellow
A future-proof smell training app for people who have lost their sense of smell and taste


Carefree parenting on the go
BabyMaps
Carefree parenting on the go


An interactive training game for the workplace
The CNV Serious Game
An interactive training game for the workplace


Fast delivery - for more orders and satisfied customers
Spare Rib Express Driver app
Fast delivery - for more orders and satisfied customers


Buy and sell pallets easily
Pallet app
Buy and sell pallets easily

Fighting litter together
Operatie Z.U.I.V.E.R.
Fighting litter together

Educational about water and climate - play directly in the Facebook feed
The HHNK Clean Water Facebook game
Educational about water and climate - play directly in the Facebook feed


HR workshops for the entire team in a scalable B2B e-learning game
Anders denken
HR workshops for the entire team in a scalable B2B e-learning game

Discover the night sky in Augmented Reality
OSR Star Finder 2.0
Discover the night sky in Augmented Reality

A sustainable solution for a safe road network
RTRI
A sustainable solution for a safe road network

Community and gamification
The fair word game - a hit in the app stores
WordCrex puts a unique twist on Scrabble: namely, everyone plays with the same letters. This multiplayer game is wildly popular with a growing community of regular players. Our partnership with WordCrex kicked off in 2022 with a code review and effective optimizations. This resulted in great results and milestones, including 300,000 downloads.



Secure and GDPR-proof questionnaires among hard-to-reach audiences
RIVM Respondent Driven Sampling
Secure and GDPR-proof questionnaires among hard-to-reach audiences


The world's leading app for birth support
Doula
The world's leading app for birth support

The largest community of readers in the Netherlands
Hebban Book community
The largest community of readers in the Netherlands

B2B start-up
Exercise classes at 70+ nurseries
Jim Movebooks offers a unique gym class for children: with colourful characters, exercise and play come together. When the Amsterdam studio closed its doors in early 2020, DTT helped transform the Jim Movebooks concept into a scalable B2B solution. In less than 12 months, this Amsterdam start-up rapidly grew to 70+ connected nurseries.



For this SaaS alert service, user-friendliness is critical
Multibel
For this SaaS alert service, user-friendliness is critical

Fitness community for healthy soccer fans
Healthy Football League
Fitness community for healthy soccer fans

Quick and simple memo creation - a hit with 100k+ downloads
VoNo Voice Note to Mail app
Quick and simple memo creation - a hit with 100k+ downloads

Exploring the solar system with Virtual Reality
Fly Me to The Stars VR
Exploring the solar system with Virtual Reality

Play the ultimate word game with >300,000 downloads
Wordcrex
Play the ultimate word game with >300,000 downloads


Physical and app go hand in hand to map emotions
E-moodboard
Physical and app go hand in hand to map emotions


On this platform, security professionals and administrators can find each other 24/7
Miedema
On this platform, security professionals and administrators can find each other 24/7


Suriname's largest real estate agent pushes forward on app stores
Surgoed real estate portal
Suriname's largest real estate agent pushes forward on app stores

This solution helps field staff quickly go from scan to quote
Flamma inspection app
This solution helps field staff quickly go from scan to quote

Chamber of Commerce helps entrepreneurs with import missions via e-learning
KVK Import e-learning
Chamber of Commerce helps entrepreneurs with import missions via e-learning


This wrapper app allows you to quickly and securely manage your assets from anywhere
Axento
This wrapper app allows you to quickly and securely manage your assets from anywhere


With this intranet app, Topa's team works better together every day
Topa Verpakking
With this intranet app, Topa's team works better together every day


Quick and easy ordering with this user-friendly loyalty app
Spare Rib Express
Quick and easy ordering with this user-friendly loyalty app


Strava link: from miles to discount points
Sportwallet
Strava link: from miles to discount points

A five-year study on healthier lifestyles
SupremeNudge
A five-year study on healthier lifestyles

Levi
Technical director
We develop iOS apps that integrate seamlessly with Apple's ecosystem. This ensures optimal security and an intuitive user experience.
We develop iOS apps that integrate seamlessly with Apple's ecosystem. This ensures optimal security and an intuitive user experience.
Frequently asked questions about creating iOS apps
What does it cost to have an iOS app made?
The cost of an iOS app depends on the specifications, the desired functionality and the scope of the project. A basic app is usually more affordable than an app with complex functionalities. Contact us for a tailor-made quote.
How long does it take to develop an iOS app?
Developing an iOS app takes between 2 and 6 months on average, depending on several factors. The size of the app, the complexity of the functionalities and the available resources play an important role. By working well together and setting priorities, we ensure that the development process runs efficiently and appropriately.
Can my iOS app be extended later with new features?
Yes, we build your app so that it can be extended in the future. This makes it possible to add new features without having to rebuild the base.
Do I have full control over my iOS app after delivery?
Absolutely. After delivery, you get full access to your app and its source code, without vendor lock-in. This means you can fully manage, modify and further develop the app as you wish.
Will my iOS app be placed on the App Store?
Yes, we guide you through the whole process, including submitting your app to the Apple App Store. We make sure your app complies with Apple's guidelines and is ready for publication.

17.04.2026
Now live: smart customer communication for Quintes
Together with Quintes, DTT revamped its customer communications regarding important documents. Find out how this digital solution ensures more efficient processes and a better email experience for customers.

01.04.2026
Welcome Pito
Doing Things Together, now also with Pito – the go-to community app for neighbourhoods.
Full service.
For all things digital.

Concept, design, strategy, development, maintenance, growth.We do it all, with one team in the center of Amsterdam.In consultation, we tailor our digital services to the needs and wishes of our clients.Please feel free to contact us for a customized consultation. We are happy to help you digitally advance.


Meet with our digital experts
































