CiertoLab
What We Build

Three services. Zero filler.

We focus on what early-stage startups actually need: fast mobile apps, solid web products, and AI features that ship.

React Native + LLM integrations, shipped fast.

AI-Powered Mobile Apps

We build cross-platform mobile apps in React Native with AI features baked in from the start. OpenAI, Anthropic, Gemini — we pick the right model for your use case and integrate it cleanly.

  • iOS & Android from one codebase
  • LLM-powered features (chat, summarization, recommendations)
  • Expo or bare React Native — we work with both
  • Real-time features with WebSockets
  • App Store & Play Store submission handled
  • Post-launch support included

Tech Stack

React NativeExpoTypeScriptOpenAILangChainNode.js
Discuss this service
mobile.ts
// AI-powered chat in React Native
const response = await openai.chat.completions.create({
  model: "gpt-4o",
  messages: [
    { role: "system", content: systemPrompt },
    ...conversationHistory,
  ],
  stream: true,
})
iOS & Android from one codebase
LLM-powered features (chat, summarization, recommendations)
Expo or bare React Native — we work with both
Real-time features with WebSockets

Next.js + Node.js — production-grade from day one.

Full-Stack Web Development

Need a web app, dashboard, or API? We build it with Next.js on the frontend and Node.js on the backend. Fast, scalable, and SEO-friendly. We don't do WordPress.

  • Next.js App Router with server components
  • REST or GraphQL APIs with Node.js
  • PostgreSQL / Supabase / PlanetScale
  • Auth with Clerk, NextAuth, or custom JWT
  • Deployed to Vercel, Railway, or AWS
  • Built-in analytics and error tracking

Tech Stack

Next.jsTypeScriptNode.jsPostgreSQLTailwind CSSVercel
Discuss this service
web.ts
// Type-safe API route in Next.js
export async function POST(req: Request) {
  const { userId, prompt } = await req.json()
  const result = await generateAIResponse(userId, prompt)
  return Response.json({ result })
}
Next.js App Router with server components
REST or GraphQL APIs with Node.js
PostgreSQL / Supabase / PlanetScale
Auth with Clerk, NextAuth, or custom JWT

Add AI to your existing product — no rewrite needed.

LLM Feature Integration

You already have a product. You want AI features. We add them without blowing up your codebase. Chat interfaces, semantic search, document Q&A, AI agents — we've built them all.

  • RAG pipelines (retrieval-augmented generation)
  • Semantic search with vector databases
  • Document Q&A and summarization
  • AI agents with tool use
  • Streaming responses for snappy UX
  • Prompt engineering and model optimization

Tech Stack

OpenAILangChainPineconepgvectorAnthropicStreaming API
Discuss this service
ai.ts
// RAG pipeline for document Q&A
const docs = await vectorStore.similaritySearch(query, 5)
const context = docs.map((d) => d.pageContent).join("\n")
const answer = await llm.invoke(
  buildPrompt({ context, question: query })
)
RAG pipelines (retrieval-augmented generation)
Semantic search with vector databases
Document Q&A and summarization
AI agents with tool use

Let's Connect

Follow the work, or just say hi

We share what we build, what we learn, and the occasional hot take.

GitHub
Twitter / X
LinkedIn
Instagram
Email

Not sure which service fits your project?

Book a free 30-minute call. We'll scope it out together and give you an honest answer — even if that means telling you what not to build.