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.
Interactive 2D board game UI, built in React.
The challenge
A zoomable, selectable board-game experience with precise interaction — the kind of UI that breaks easily if the engineering isn't solid.
What we did
- Clean interaction model for selecting zones
- Smooth zoom / pan, including pinch behavior
- Maintainable codebase — future features aren't a rewrite
Ownership and clarity, from people who'd know.
“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.