When a custom build is the right answer.
Custom software is the expensive option, and it should be the second thing you try. These are the cases where it's still the right one.
You've evaluated the tools. Each does 60% of the job, and the gap is exactly the part your business runs on.
You need something you can put in front of users and investors — that won't need a rewrite the month it gets traction.
Something works but nobody understands it, and every new feature costs three times what it should.
You need a browser product and native apps, and you'd rather not run two teams that disagree with each other.
What we build.
From a first MVP through to the version that has to hold up under real load.
Fullstack Web Apps & Dashboards
SaaS MVPs, internal tools, marketplaces and dashboards — built with a stack that won't trap you later.
Mobile Apps — React Native / Expo
Cross-platform iOS + Android apps from one codebase, with native performance and fast release cycles.
Fixes, Features & Performance
Bug fixing and cleanup, Core Web Vitals speed work, feature development, security hardening and tech-debt reduction on existing projects.
Technical Consulting
Best stack for your product, architecture and scalability guidance, security reviews and practical tooling recommendations.
Custom builds are scoped per project after a discovery pass — there's no honest range before we know what the thing has to do. You get a fixed scope, a milestone plan and a number before any code is written.
Boring, proven tools — chosen so you can hire for them later.
Real stores. Named clients. Still running.
Named clients, real systems, still running. Platform migrations, storefronts built from nothing, custom apps for problems no app-store listing solved, and operations automation that gave a small team back more than ten hours a week.
Ownership and clarity, from people who'd know.
“We have been working with Danny for almost two years. He has taken the time to listen to our ideas and understand how we want our webshop to work, and then found ways to turn those ideas into practical Shopify solutions. I would recommend Danny to companies looking for a Shopify developer who listens, understands their needs and can be a long-term partner.”
“Sleek App has been an invaluable partner for development and SEO optimization. Their professionalism and extensive expertise have significantly contributed to our project's success. They consistently deliver solutions that enhance functionality and user experience, going well beyond our expectations.”
“Danny was able to use AI to understand how to pull the data, store it and allow us to reduce the manual work required by over 10 hours each week. That's 10 hours going back into our business. He was super easy to work with and extremely detail oriented.”
“He fixed a broken codebase written by unreliable contractors and then also created a ready to deploy pipeline that allows me to push updates as needed. Working with Danny is easy and efficient - which are the two essentials for finding a partner. He communicates efficiently, logs all requirements, delivers on time, promptly fixes any live site related issues.”
“The Lead Developer was one of the best frontend developers I have ever worked with. Easy to trust. Strong ownership. Delivered what they committed to.”
“Extremely professional in communication and ownership of tasks. Quick to take direction and run with it to efficiently produce high-quality work.”
“Very pleased to have worked with Sleek App. The team was able to quickly grasp the requirements of our complex project and deliver the initial deliverables in good time.”
Scope. Build. Ship. Maintain.
The same process whichever lane you came in through. You always know what’s done, what’s next, and what’s blocked.
Scope & quote
We map what you need, what it will cost and what could go wrong — before anyone signs anything.
Build & ship
Senior engineering, weekly check-ins, clean delivery. Quality you don't need to review line by line.
QA & launch
We finish strong — testing, hardening and launch support, not “good luck from here.”
Maintain & extend
Ongoing maintenance, monitoring and new features on a retainer — if you want us to stick around.
Tell us what you’re building — or fixing.
Send the details and you’ll get back a clear recommendation, a realistic timeline, and a straight answer on whether we’re a fit.