Custom web applications
Dashboards, booking and membership platforms, internal tools and SaaS products, with accounts, payments and real-time data.
Available for new projects
Software, built properly. From idea to shipped.
RBDK is a private software development studio. We design and build custom web apps, mobile apps, AI tools and games, then keep them running.
- React
- TypeScript
- Next.js
- Elixir · Phoenix
- Swift · SwiftUI
- Expo · Capacitor
- Supabase
- Postgres
- Python
- Node.js
- Claude AI
- Computer vision
- Fly.io
- Cloudflare
- Tailwind
40+Projects delivered
3Platforms: web, iOS & Android
100%Delivered end to end, from design to deployment
1Point of contact from start to finish
Services
What we can build for you
One studio from first sketch to production, so you deal with a team that knows the whole system.
Mobile apps
Native iOS in SwiftUI, or cross-platform iOS and Android with Expo and Capacitor, taken all the way to App Store and Play Store approval.
AI agents & automation
AI assistants, voice agents, video and image analysis, and automated pipelines that take repetitive work off your plate.
Games & interactive
Web and mobile games with in-game economies, multiplayer, leaderboards, and the balancing that keeps players coming back.
Backend, data & hosting
Postgres and Supabase databases, APIs, authentication, row-level security, deployments and monitoring that hold up under load.
Product & UI design
Clickable prototypes, design systems and responsive interfaces that look sharp on every screen before any code is written.
Products & apps
Built in-house by RBDK
Our own games and apps. Each one was planned, designed, built and shipped in-house.
Game · Web & mobile
Pack It Up — Cromito
A World Cup 2026 card game. Players open packs, collect real footballers, trade on a live transfer market, and earn coins from how their players actually perform in real matches.
- Elixir · Phoenix LiveView
- Supabase
- Fly.io
Game · iPad + phones
Womp
A party music game. An iPad hosts and plays the music while everyone joins from their own phone by scanning a QR code, with no install, and races to buzz in first.
- SwiftUI
- WebSockets
- Apple Music
Game · Multi-sport
Cromito Rugby & F1
The Cromito card platform extended to international rugby and Formula 1, with live player ratings, prediction games and a shared coin economy.
- Phoenix
- Supabase
Sports platform · Web & mobile
Intercept Padel
A padel club and community platform with ELO rankings, match tracking, player profiles, achievements, XP and online payments, plus a companion mobile app.
- React · TypeScript
- Expo
- Supabase
- PayFast
Sports AI · Video analysis
SquashCam
Upload a squash match video and get real statistics back: rallies, shot types, distance covered and T-dominance, all from computer-vision ball and player tracking.
- Computer vision
- Python
- React
Coaching tool · Web
MatchReview
An opponent tracker for coaches. Log results, note what each opponent did well and where they struggled, and have the scouting report ready before the next match.
- React · TypeScript
- Supabase
Recruiting AI · Web
Scout
A recruiting agent that scans junior tennis circuits and ranks prospects on results, UTR, ranking and upset wins, using a weighting the coach controls with live sliders.
- Node.js
- Data pipelines
Sports stats · Web
Intercept Netball Stats
Live courtside stat capture for netball teams, recording possession, player status and match events, then turning them into reports coaches can use.
- React
- Supabase
AI assistant · iOS
Jarvis
A voice assistant app. Hold to talk and Jarvis answers out loud through a 3D energy orb that reacts to its voice, backed by a personal AI agent.
- SwiftUI · SceneKit
- Voice AI
- WebSockets
AI automation · Video
Klip
Turns long YouTube videos into short vertical clips. It transcribes the video, finds the best moments, reframes them around faces, adds animated captions and posts them.
- Python
- Whisper
- FFmpeg
Health · Mobile web
AcuCal
A weigh-first nutrition tracker. Search a food, enter its weight in grams, and watch calories and macros update against targets set with a built-in calculator.
- React · TypeScript
Education · Web
Noted
Study notes organised by degree, year and subject, so students can always find the notes they need.
- React
- Supabase
- Cloudflare
Shopping · Web
BestPrice
One search across every shop you use. Results land on a single page with a price filter, and each one opens straight on the real product page.
- Node.js
- Browser automation
Process
How a project runs
Clear steps, regular demos and no surprises. You see real progress every week.
- 01
Discover
We talk through the problem, who will use it and what success looks like. You get a written scope, a timeline and a fixed quote.
- 02
Design
Wireframes and a clickable prototype, so you can test the flow and sign off on the look before development starts.
- 03
Build
Development in short cycles with a working build you can try every week. You stay in the loop the whole way.
- 04
Launch & support
Deployment, app store submission, monitoring and ongoing improvements after launch. You own the code.
About
One studio, end to end
RBDK is a software development studio founded by Reuben de Klerk and based in South Africa. We take on private development work for businesses, clubs and founders, and build our own games and apps alongside it.
Running our own products keeps us honest. We deal with real users, real payments and real outages, and we bring that experience to every client project.
- Direct contact with the developers, no middlemen
- Modern, maintainable stack
- You own the code and the accounts
- Fast turnaround on prototypes
Let's work together
Have a project in mind?
Tell us what you're building. We reply to every enquiry, usually within one business day.
hello@rbdk.uk