Custom apps and platforms, Built like we’re part of your team.
We help companies design and develop mobile apps and web platforms that scale, with a sharp focus on speed, clarity, and user experience.
We help companies design and develop mobile apps and web platforms that scale, with a sharp focus on speed, clarity, and user experience.
From mobile health apps to customer platforms and CRM tools, we’ve helped 90+ teams build fast, launch smarter, and stay flexible.
Let's DiscussWe’ve helped over 60 clients build and launch more than 85 projects across mobile, CRM, and web platforms.
Let's DiscussUnited Kingdom | OYNB
United Kingdom | Trim
We work across mobile, web, and interface systems, with the right balance of technical depth and user-first design.
We prioritize clean, intuitive interfaces that not only look good but also work better.
Scalable, high-performing web platforms built to fit your workflow and grow with your business.
We design and build mobile applications tailored to your users, from prototype to launch.
QA is integrated into every project from the outset. We catch issues before they become blockers.
We also support custom storefronts and CMS needs, as Shopify development partners and WordPress website designers.
We work closely with your team from start to finish, sharing aligned goals and maintaining full transparency throughout the process.
View MoreWe align on product goals, user needs, and business context. This phase includes technical scoping, user insights, and early risk checks.
We create user flows and interface designs that prioritize clarity, usability, and system logic, ready for handoff or direct build.
Code is shipped in fast sprints, with regular demos and shared progress. We work in frameworks that support scalability and performance.
Testing runs alongside development. We cover functionality, edge cases, and cross-device checks.
Once live, we support performance monitoring, issue handling, and iterative improvements based on user or team feedback.
We align on product goals, user needs, and business context. This phase includes technical scoping, user insights, and early risk checks.
We create user flows and interface designs that prioritize clarity, usability, and system logic, ready for handoff or direct build.
Code is shipped in fast sprints, with regular demos and shared progress. We work in frameworks that support scalability and performance.
Testing runs alongside development. We cover functionality, edge cases, and cross-device checks.
Once live, we support performance monitoring, issue handling, and iterative improvements based on user or team feedback.
A few builds we’ve worked on with clear goals, sharp delivery, and results that speak for themselves.
Let's DiscussPerformant designed and built a refreshed website home page for us in Wordpress and did an excellent job. They were helpful and respectful but clearly knowledgeable in their field, offering expert advice and recommendations at each stage. From the outset, with very tight timelines, they proposed a clear schedule which they then stuck to, even though it ran over the holiday period. It was lovely to see design and development skills wrapped up so efficiently; they gave us three design approaches in Figma and then moved on to execute the Wordpress build seamlessly.
One of our most valuable agency partnerships, wouldn't have been possible to scale at speed without them.
Very knowledgeable team. Easy to work with. Understood clearly the requirements after asking detailed questions. Extremely happy with the result, particularly the fact that they took it off my plate and I could trust them to execute (even without knowing them, but based on the way the PM talked about the project).
They were brilliant, highly recommend. Really easy to deal with and knew their stuff. 10
The team at Performantcode worked tirelessly to deliver the project, even with last-minute curve balls from us. The final product looks great, and we are going to continue using them for future projects. Communication was great, the work was completed quickly, and the support during go-live was much appreciated.
Performant delivered excellent work on this FE development project and I enjoyed working with them. Communication was top-notch, met all deadlines, and skills were very strong. I enjoyed working with them and will likely have additional jobs for them in the future. Very few agencies have the ability to untangle complex requirements with ease and finesse. Highly Recommend!
You don’t need to have everything mapped out. We’re happy to take a look, ask the right questions, and help you explore what’s possible.
Let’s Talk Today
What teams say after working with us