# Emergent

> An agentic AI app builder that plans, codes, tests, and deploys full-stack web apps and Expo mobile apps from a chat prompt.

Emergent is an agentic app builder: describe a product in chat and its agents design, write, test, and deploy it as a full-stack app. Web projects use React, Next.js, FastAPI, and MongoDB; mobile projects use Expo (React Native). You own the code, can push it to GitHub, and can host it anywhere, so it suits an MVP you expect to outgrow.

Website: https://emergent.sh

Emergent is an agentic app builder. Instead of a single model answering a prompt, you talk to agents that plan the application, write the code, run tests against it, and deploy it, then keep iterating with you in the same chat. The output is a real full-stack project rather than a hosted no-code artifact, which is the main reason a founder would pick it over a builder like [Base44](/tools/base44) where the backend belongs to the platform.

The stack is conventional and documented: React and Next.js on the front end, Python FastAPI on the back end, MongoDB for data. Mobile projects run through a separate Mobile Agent that builds Expo (React Native) apps against the same backend. Because those are mainstream choices, a developer you hire later will recognize everything in the repo.

## Highlights

- **Agents that test as well as write.** Emergent's help center describes built-in testing alongside live preview and deployment, so the loop is generate, verify, fix rather than generate and hope.
- **Web and mobile from one platform.** The Mobile Agent produces Expo (React Native) apps, and the docs cover moving between web and mobile versions of a product.
- **You own the code.** Save to GitHub from the editor, pull a repository back in, or download the project and host it yourself.
- **One-click LLM integration.** Adding an AI feature to your own app is a platform primitive, which matters if the product you are building is itself AI-powered.
- **Hosting with custom domains and SSL.** Deploy to a live URL from Emergent, attach your own domain, and get continuous deployment as you keep changing the app.
- **Bigger context and custom agents on Pro.** The Pro tier adds a 1M-token context window, an "ultra thinking" mode, system prompt editing, and custom AI agents for larger projects.

## In a founder's workflow

Emergent suits the MVP that has a backend from day one: accounts, data that belongs to users, and an admin side. A first prompt that gets a useful result is specific about roles and data:

```text
Build a two-sided marketplace MVP for freelance photographers.
Photographers create a profile and packages; clients browse, book a
date, and pay a deposit. Include an admin dashboard for approvals
and a simple email notification on each booking.
```

Let the agents scaffold it, use the preview to click through every flow, and save to GitHub before you start heavy revisions. When you reach the point where you want line-level control, the [Lovable to Claude Code handoff](/guides/founders/lovable-to-claude-code-handoff) guide applies almost unchanged: the repo is standard, so a coding agent can take over.

> [!NOTE]
> Credits fund code generation, testing, deployment, and integrations, and each deployed app draws 50 credits a month while it is live. Budget for hosting as an ongoing line, not a one-time cost.

## Good to know

Emergent is browser-based with no local install. As of September 2026 the pricing page lists a free plan, Standard at $20/month ($17 on annual billing) with 100 monthly credits, Pro at $200/month ($167 annual) with 750 credits, and custom-priced Business and Enterprise tiers. Business adds role-based access, SSO, shared team workspaces, and real-time co-editing; Enterprise adds audit logs, self-hosted database support, and VPC deployment. Top-up credits do not expire, while monthly credits reset each billing cycle.

Two caveats. First, MongoDB and FastAPI are a sound stack, but they are Emergent's choice, not yours; if your future team is committed to Postgres or a TypeScript backend, plan for a migration. Second, agentic builders can spend credits quickly on ambiguous requests, so write prompts that describe user roles and data before you describe visual polish.

Closest alternatives: [Lovable](/tools/lovable) for a Supabase-based web MVP with a larger template ecosystem, [Replit Agent](/tools/replit-agent) for a hosted IDE with an agent inside it, and [Rork](/tools/rork) if the product is mobile-first. The [Claude Code for non-developers](/guides/founders/claude-code-for-non-developers) guide explains what changes once you leave the builder and work in the repo directly.

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_Source: https://agentscamp.com/tools/emergent — Tool on AgentsCamp._