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A focused first release
One complete user journey, clear onboarding and the smallest set of features needed to make the app genuinely useful.
Mobile app development
A mobile app built for the job people need to do.
I shape and build mobile product experiences around the core workflow, the people using it and the systems it must connect to. The first release should be useful, testable and realistic to support.
Selected teams I have worked with
Start with the experience, then choose the stack.
Expo and React Native can be a sensible route to iOS and Android, but the product decision comes first. I define what users must do and what the team must operate after launch.
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Product strategy
A focused first release
We choose one primary user and the complete journey they need from the first release. That includes onboarding, the main action, useful feedback and the states that appear when something goes wrong. Keeping the boundary clear gives people a product they can actually use, without spending the first budget on a long feature list.
Mobile experience
Mobile interaction design
I design for the way people hold, navigate and return to a mobile product. Controls, forms, loading states, empty screens, permissions and error messages are considered as part of the journey. The interface follows familiar iOS and Android patterns where they help, while still feeling like one coherent product across devices.
Connected systems
Connected product systems
Accounts, content, payments, notifications and business data are connected only where the workflow needs them. I define which system owns each piece of information, how changes stay in sync and what happens when a service is unavailable. That makes the app more dependable and gives the team a clearer system to support after launch.
Release and learning
Release and learning
The release is tested on real devices, prepared for the relevant app stores and supported by a practical route for feedback and fixes. I measure adoption, task completion and the points where people struggle. The next backlog is then shaped by real use and support needs, rather than assumptions made before anybody had the product.
Relevant work and thinking
Process
Three decisions before development starts.
Prove the mobile need
I map the moment of use and the device features that matter. This prevents a website journey from being rebuilt as an app without a reason.
Scope one complete flow
We define the primary action, account and data needs, edge cases and a release boundary the team can actually test.
Ship and observe
The app is checked on devices, connected to the right systems and measured against adoption or task completion after release.
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Have a specific problem?
Have an app idea or an existing mobile product?
Tell me who it is for, what they need to do and what already exists. I can help decide whether to build, improve or start with a smaller release.
Selected work
See all workSelected websites, apps and connected systems
Testimonials
What clients say
"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."
Karin Young
Psychotherapist · Karin Counselling
"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"
Taita Ngetich
CEO · Synnefa
"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."
Carla Nassisi
Growth · Briink
"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."
Isabelle Krauze
UX Lead · LLInformatics
"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."
Diana Donaldson
CEO · Be Indigo
"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"
Eliza Gerland
Strategic Marketer · UFODrive
"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."
Karin Young
Psychotherapist · Karin Counselling
"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"
Taita Ngetich
CEO · Synnefa
"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."
Carla Nassisi
Growth · Briink
"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."
Isabelle Krauze
UX Lead · LLInformatics
"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."
Diana Donaldson
CEO · Be Indigo
"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"
Eliza Gerland
Strategic Marketer · UFODrive
"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."
Karin Young
Psychotherapist · Karin Counselling
"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"
Taita Ngetich
CEO · Synnefa
"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."
Carla Nassisi
Growth · Briink
"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."
Isabelle Krauze
UX Lead · LLInformatics
"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."
Diana Donaldson
CEO · Be Indigo
"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"
Eliza Gerland
Strategic Marketer · UFODrive
"As I grow in my business, I need services to grow with, Derrick is that service when it comes to my website. He is patient, listens and takes onboard the changes I want in a timely manner. My website changes and develops with the needs of my clients and my offer which is great. He also brings new ideas and perspectives in how to improve and grow in line with my goals and business needs. I look forward seeing how this new phase develops."
Karin Young
Psychotherapist · Karin Counselling
"Derrick has been a great help in getting our SaaS website up and running. He is very knowledgeable in Webflow and was able to help us get the most out of the platform. His design skills are excellent and he was able to create a custom function-filled website that looks great and operates perfectly. I would highly recommend Derrick to anyone looking for a web designer who knows his stuff!"
Taita Ngetich
CEO · Synnefa
"Derrick is just great to work with! He's super fast, always responds in a timely manner, and is very flexible with last-minute requests. His Webflow development skills are rock solid and he has no problems keeping up with the fast pace of early-stage startups."
Carla Nassisi
Growth · Briink
"It has been a pleasure to work with Derrick! He delivered a pixel-perfect website for LLI, which not only looks and performs well but is also very organised and simple to maintain! During the process, he had the patience to clear all the incoming doubts that occurred when we were transitioning from one platform to another, and he not only delivered a great site but also tutorials on how to manage it."
Isabelle Krauze
UX Lead · LLInformatics
"Derrick is a gem of a person and a wealth of knowledge. He was so patient and helpful when explaining the more intricate parts of Webflow and bouncing around different possible solutions. He really knows the ins and outs of Webflow — it's no wonder that he's a certified Webflow Expert! I'm looking forward to the day when I get to work with him again."
Diana Donaldson
CEO · Be Indigo
"Derrick helped us redesign and build our site on Webflow and we couldn't be more pleased with the entire project. Derrick is very easy to communicate with, fast and efficient, and takes time to ask questions and provide suggestions where necessary. He has a great balance of technical and visual knowledge, which helped us build a fast, SEO-optimized site that looks great and is on-brand. Would happily hire Derrick again!"
Eliza Gerland
Strategic Marketer · UFODrive
Have something to build or improve?
Let's talk about it
Need a website or app built, improved, managed or automated? Tell me what is getting in the way and I'll get back the same working day.
Mobile app development FAQs
Clear answers about scope, process and what happens next.
Start with the job. A website is often enough for information, enquiries and simple transactions. An app becomes more useful when repeat use, device features, notifications or an account-led experience are central.
Often, yes. A shared React Native and Expo codebase can support both, while specific device behaviours may still need separate design, testing or implementation.
I set up a short feedback and measurement loop so the next iteration is based on actual use. Ongoing support can include fixes, product improvements and release work.
Yes. I can review the current user journey, interface, codebase and connected systems, then separate urgent fixes from larger product improvements. The first step is understanding what users struggle with and what the team can realistically maintain.
Usually. I can connect accounts, content, payments, CRM data or other services where the APIs and permissions allow it. Data ownership, failure handling and security are scoped before the integration is built.
It depends on the number of user journeys, integrations and release requirements. A focused first release is much quicker than a mature product with several roles and complex data. I define the release boundary and timeline before development starts.
need a hand?
I build websites and apps
I work across product marketing and engineering, turning ideas into useful digital products and improving how they perform after launch.
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