Web & mobile product development · Portugal / worldwide
KAELLUN
Digital work,
built to earn its place.
React websites and web apps. React Native mobile products. From a new idea or your existing design to a working release — with one engineer accountable for delivery.
See the workBooking & outreach for musicians · Private beta
Encore.
Direct commerce for independent creators
Dropp.love
Independent by design
38.6765° N · 9.1651° W
One person.
The whole build.
KAELLUN is the independent web and mobile product studio of Rui Daniel Luís. You work directly with me: from shaping a new product to implementing an existing Figma or Sketch design, testing it, and preparing it for release.
I work with founders, owner-led businesses and creative agencies. My collaborations include KOBU and Brand Image — bringing development capacity to a team without adding another layer between the brief and the build.
How we can work together
- Build a product
- Websites, React web apps and React Native / Expo mobile apps. Scope, implementation, testing and release.
- Develop what exists
- Design-system implementation, reusable components, authentication, APIs, payments and useful AI integrations.
- Support your agency
- External development capacity for a defined project or ongoing collaboration. Scope and availability agreed together.
More selected builds · My role
Awareness Tool
Independent concept, design and React Native / Expo development. Reminder scheduling, automated CI checks and EAS delivery. Live on the iOS App Store; Android in closed testing.
App Store ↗EyeFirst
A client's concept and supplied Figma design, implemented in React Native with Firebase and AI integration. Shipped to the iOS App Store.
App Store ↗Soraya Moon
React commerce development: a video store with authenticated access and Stripe payments.
Website ↗Rui Luís
My artist website, built with React, with commerce and ticketing integrations. I'm also a singer-songwriter and independent music producer.
Website ↗Tell me your goal, current stage and what should work better.
Written: EN · PT · FR · DE Calls: EN · PT