- Hear her voiceTap “Introduce yourself” and Sophie greets you out loud.
- Talk to herChat with Sophie in character, right in your browser.
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Custom AI Companions · Mobile Dev
Intelligent Solutions.
Built for Legacy.
Custom AI Companions & Mobile Development
Meet Sophie
Talk to Sophie, now with a voice
Sophie is our AI companion. She now has her own screen where you can talk to her and hear her speak.
Mobile development
Braai Wena
Our own Android app, designed and built in-house by Legacy Koi. We build mobile apps like this for clients too, from first idea to the Play Store.
In testing on Android
Braai Wena: share your braai with South Africa
Braai Wena is in testing, so getting it takes two quick steps:
- 1
Join the testers
Join the free Braai Wena testers group with your Google account.
Join the testers(opens in a new tab) - 2
Get it on Google Play
Then open the Play Store link on your Android phone and install the app.
Get it on Google Play(opens in a new tab)
Use the same Google account for both steps as the one on your phone's Play Store.
Your data, your country
Your data stays in South Africa
Most AI tools send your customer conversations to servers overseas. Our companions think and remember locally, so your data stays secure and under your control.
Local AI model
Your companion runs on its own AI model on a local server, so chats are never sent to overseas AI services like ChatGPT or Gemini.
Stored locally
Every conversation is saved in a local database in South Africa, not in overseas data centres.
You own your data
Your data belongs to you. You can read every chat your companion has, and we never sell it or use it to train public AI models.
POPIA compliant
Built around the Protection of Personal Information Act from day one.
Private by design
Each client gets its own secure database, kept separate from other clients.
Services
What we build
Intelligent, personality-driven products for modern businesses, from conversational AI to production-ready mobile apps.
AI Companions
- Persona-driven chatbots for businesses
- 24/7 customer engagement with memory
- Full access to every conversation your companion has
WhatsApp Companion
- Chat with your AI companion on WhatsApp
- Instant replies to customers on the app they already use
- Hand over to a real person when needed
Mobile Development
- Cross-platform apps for iOS, Android and Web
- Flutter & .NET MAUI expertise
Custom Solutions
- Tailored integrations
- API development & automation
How it works
Three steps from idea to launch
Step 1
Discovery Call
We learn your business, your users and your goals.
Step 2
Design & Build
We design the companion, the app and the backend.
Step 3
Deploy & Support
We launch, monitor and keep improving.
Work
Selected projects
Case studies are on the way. Here is a taste of what we are building.
Coming soon
AI Companions
AI Companion Platform
A persona-driven assistant with long-term memory and command handling.
Coming soon
Flutter
Cross-Platform Mobile App
A consumer app shipped to iOS and Android from a single codebase.
Coming soon
.NET MAUI
Business Workflow App
A native line-of-business app connected to existing back-office systems.
Coming soon
Custom Solutions
API & Automation Suite
Integrations and automations that remove manual work from daily operations.
About
Built for the long game.
Legacy Koi builds AI companions and mobile apps that feel human, work reliably, and scale with your business. We focus on craft over shortcuts.
Our mission: building intelligent, personality-driven AI companions and mobile applications for modern businesses.
Feels human
Companions with personality, context and memory.
Works reliably
Production-grade engineering, monitored after launch.
Scales with you
Architecture that grows with your users and your business.
POPIA compliant
We build every companion and app around the Protection of Personal Information Act (POPIA), South Africa's data privacy law. Your customers' information is handled lawfully, kept secure and stays in the country.
- Personal information is collected only for a clear, lawful purpose
- Chats and customer data are stored in a local South African database
- Your AI companion runs on a local model, so data is not sent overseas
- Access is restricted, encrypted and kept separate per client
- You can ask to see, correct or delete your information at any time
Contact
Start a project.
Tell us what you want to build. We usually reply within one business day.