Backend Feature

A Real-Time Backend for Your Mobile and Web App

Stop building infrastructure. VibeFast includes a production-ready Convex backend with real-time database, serverless functions, and authentication—ready to deploy.

Modern Backend Features

Everything you need for a production backend, with nothing to manage.

Real-Time Database

Your data syncs instantly across all clients. No manual polling or websocket setup needed.

Serverless Functions

Write backend logic in TypeScript. Mutations, queries, and actions deploy automatically.

Auto-Sync

Changes propagate to all connected clients in real-time. Perfect for chat, collaboration, live updates.

File Storage

Upload and serve files through Convex. Images, documents, user uploads handled for you.

Authentication

Built-in auth with session management. Integrates with Google, Apple, and email login.

TypeScript Native

End-to-end type safety. Your queries and mutations are fully typed in your app.

Why Convex?

The modern backend for React developers.

Zero Infrastructure

No servers, no database management, no scaling headaches. Convex handles everything.

React-First

Hooks that feel natural in React. useQuery and useMutation just work.

Instant Updates

Data changes sync to all clients in milliseconds. Build real-time features effortlessly.

Type Safety

Schema types flow from backend to frontend. Catch errors at compile time.

What's Included

Convex project configuration
Database schema setup
User and session tables
Auth mutations and queries
File upload utilities
API client for mobile
API client for web
Environment templates
Local dev workflow
Production deployment guide
Webhook handlers
Scheduled functions example

Simple & Type-Safe

Write backend functions in TypeScript. Use them directly in your app.

convex/messages.ts (Backend)
import { v } from "convex/values";
import { mutation, query } from "./_generated/server";

// Query: Get all messages (real-time)
export const list = query({
  handler: async (ctx) => {
    return await ctx.db.query("messages").order("desc").take(50);
  },
});

// Mutation: Send a message
export const send = mutation({
  args: { content: v.string() },
  handler: async (ctx, args) => {
    const user = await ctx.auth.getUserIdentity();
    return await ctx.db.insert("messages", {
      content: args.content,
      author: user?.name ?? "Anonymous",
      createdAt: Date.now(),
    });
  },
});
ChatScreen.tsx (Frontend)
import { useQuery, useMutation } from "convex/react";
import { api } from "@/convex/_generated/api";

export default function ChatScreen() {
  // Real-time query - updates automatically!
  const messages = useQuery(api.messages.list);
  const sendMessage = useMutation(api.messages.send);

  return (
    <View className="flex-1">
      <FlatList
        data={messages}
        renderItem={({ item }) => <MessageBubble message={item} />}
      />
      <MessageInput onSend={(text) => sendMessage({ content: text })} />
    </View>
  );
}

Save Weeks of Backend Work

FeatureVibeFastFrom Scratch
Database setup1-2 days
Auth backend2-3 days
API layer1-2 days
File storage1 day
Real-time sync3-5 days
Deployment config0.5 day
TypeScript typesOngoing
Total TimeReady today2-3 weeks

Frequently Asked Questions

What is Convex and why use it?

Convex is a backend platform that combines a real-time database, serverless functions, and file storage. It's designed for React applications and provides automatic sync, type safety, and zero infrastructure management. VibeFast uses Convex because it dramatically reduces backend complexity while providing enterprise-grade features.

Can I use a different backend?

VibeFast is built around Convex, but the frontend code is modular. If you prefer Supabase, Firebase, or your own backend, you can swap the API layer. However, you'll lose some Convex-specific features like automatic real-time sync and the integrated type system.

How does real-time sync work?

When data changes in Convex, all connected clients receive updates automatically within milliseconds. You don't need to set up websockets, polling, or push notifications for data sync—it's built into the useQuery hooks. This is perfect for chat, notifications, live dashboards, and collaborative features.

What's included in the Convex starter?

VibeFast includes a complete Convex setup: database schema with user and session tables, auth mutations, file upload utilities, typed API clients for both mobile and web, environment configuration, and examples for webhooks and scheduled functions.

How much does Convex cost?

Convex has a generous free tier that covers most hobby and small production apps. Paid plans start when you need more storage, bandwidth, or team features. VibeFast works with any Convex plan—you're not locked into specific pricing.

How do I deploy the backend?

Convex deployment is simple: run 'npx convex deploy' and your functions are live. VibeFast includes environment templates for staging and production. The backend runs on Convex's infrastructure, so there's no servers to provision or maintain.

Ready to Ship with a Real-Time Backend?

Get VibeFast and deploy your backend this week.

One-time purchase. Lifetime updates. Commercial license included.