Greta.sh vs Tempo: AI App Builder vs a React Team IDE

Greta.sh vs Tempo: Team IDE vs Product Platform. Which One Takes You Further?

There is a question that comes up constantly in developer communities right now: how much of building can AI actually do?

For Tempo, the answer today is: AI agents can work inside your existing codebase alongside designers, PMs and engineers, turning feedback into issues, specs, designs and pull requests. That's genuinely useful, and for product teams that already have a repo, it changes how work moves from idea to merged code.

For Greta.sh, the answer starts somewhere else: AI can build the product itself from a plain-language description, deploy it in one click, and keep improving the published site's SEO and AI-search readability after launch.

These are not two competing answers to the same question. They are answers to two different questions. Tempo is asking: how does a product team ship faster on the codebase it already has? Greta.sh is asking: how do founders and teams get from an idea to a live product?

If you're trying to decide between these two tools, the right choice comes down to which question matters more for your situation.

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What Is Tempo?

Earlier versions of this comparison described Tempo as a React component builder, similar to v0.dev. Tempo has since pivoted. It now describes itself as "The IDE for the whole team": a desktop app for macOS, Windows and Linux that you download and point at your real codebase. Tempo announced that it would wind down its web editor on June 14.

Inside the app, coding agents powered by Claude Code and Codex run in parallel, each on its own branch. Tempo's site lists a Triage Agent that turns feedback into prioritized issues, a Spec and Design Agent that writes PRDs and clickable designs from your real components, a Bug Fixer Agent and a Feature Builder Agent. The output is pull requests in your git repo, and Tempo can work across multiple repos (frontend and backend).

Tempo is built for:

• Product teams (designers, PMs and engineers) who already have a codebase
• Designers who want to design with real components and ship changes as pull requests
• PMs who want specs, clickable prototypes and issues tied to the code
• Engineers who want to run several coding agents in parallel, with PR and CI status in one view

As of October 2026, Tempo's pricing page lists a Free plan, Pro at $50/month for one user, Team at $200/month for five users (extra users $40/month each). Its top tier, Enterprise, is custom-priced.

But the starting point matters.

Tempo works on a codebase you already own. It does not host your app, and it does not provide a managed backend or database. It needs Node.js and Git on your machine. Getting merged code to live users still runs through your own hosting and deployment setup.

For startup founders and teams building from scratch, this distinction is important. Tempo makes an existing engineering workflow faster. Greta.sh is designed to give you the product and the place it runs.

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What Is Greta.sh?

Greta.sh is a growth engineering platform built for founders, startup teams, freelancers, and agencies who want to go from a prompt to a deployed web product.

The greta.sh homepage introduces the name as Growth Engineering Tech Agent. That name reflects the tool's ambition: to help with growth after launch, not only with the first build.

Where Tempo works inside your existing repo, Greta.sh builds and hosts the product:

• AI-powered generation: describe your product in plain language, or start from one of 100+ marketplace templates
• Portable code: clean Next.js code that you can export and take anywhere
• Team collaboration: each project has one Owner who invites Editors and Viewers (team management is on the Pro plan)
• Creator marketplace: creators publish templates, set a price (including $0), and earn when someone buys
• Built-in growth tooling: web analytics, one-click deployment with SSL and a global CDN, and integrations with GitHub, Supabase and Netlify, plus connectors such as Resend and AWS SES for email

The core question Greta.sh answers for its users is not "how do I make my team's repo move faster?" It is "how do I get from idea to a deployed product, and keep it growing?"

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Greta.sh vs Tempo: 6 Key Differences

1. Agent Pull Requests vs Full-Stack Generation

This is the defining difference between the two tools.

Tempo runs coding agents (Claude Code and Codex) on your git repo. You or a teammate assign an issue, an agent builds the change on its own branch, and the result arrives as a pull request ready for review. The agents can work on frontend and backend repos, but everything they produce lands in a codebase you already maintain.

Notice the pattern: Tempo's output is a change to an existing project. That project needs its own hosting, its own database and its own deployment pipeline. Tempo does not provide those.

Greta.sh generates the product itself from a prompt: the pages, the app logic and, on the Pro plan, a database. Then it deploys the result in one click with SSL and a global CDN, and you can set up a custom domain from the Starter plan.

The verdict: If you have a codebase and a team, Tempo helps you ship changes to it faster. If you need the product to exist in the first place, Greta.sh starts from the idea.

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2. Integration Model vs Self-Contained Platform

Tempo is designed as a tool that plugs into your existing engineering workflow. To use it, you need:

• An existing codebase in git ("Download Tempo and open your codebase")
• Node.js and Git installed locally
• Your own hosting, backend and database
• Someone who reviews and merges the pull requests the agents open

The upside: for teams that already have these things, Tempo adds parallel agents, specs and designs on top of the repo without changing where the app lives.

The downside: for anyone starting from scratch, such as a founder with an idea or a freelancer beginning a client engagement, Tempo assumes the project already exists.

Greta.sh is a self-contained product platform. You describe what you want or pick a template, Greta.sh builds it, and one-click deployment puts it online. If you later want to move, the code exports as clean Next.js.

For teams that already have mature projects, Greta.sh's templates can still be a fast starting point for new products. But for new product development, the difference is clear.

The verdict: Tempo speeds up existing projects. Greta.sh creates new ones from scratch.

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3. Deployment: Pull Requests vs One-Click Deploy

Tempo does not host apps. Its agents produce pull requests, and getting merged code to a live environment is on you: your cloud provider, your CI/CD configuration, your environment management, your SSL and CDN setup. For experienced engineering teams, this is not a problem. For founders and non-technical builders, it can be a significant barrier.

Greta.sh includes deployment:

• One-click deployment with SSL and a global CDN
• Custom domain setup from the Starter plan ($5/month welcome offer, normally $20/month, as of October 2026)
• GitHub version control on the Pro plan
• Supabase as a project integration for your data

You can read more about performance and scalability in our Bolt comparison.

The verdict: Tempo produces code changes you still have to ship. Greta.sh ships the product for you.

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4. Team Features: Whole-Team IDE vs Project Roles

Tempo is built around teams. It brings designers, PMs, engineers and agents into one IDE, with issues, docs, specs, designs and PR status side by side. Its Team plan includes five users, with Admin and Member roles.

Greta.sh handles collaboration at the project level through its Team feature:

• Each project has one Owner, who invites Editors and Viewers
• One Editor works at a time, and the Owner can take control back
• Credits are billed to the Owner
• Only the Owner connects GitHub or Supabase

For product teams that live in a shared codebase all day, Tempo's collaboration model is built around that repo. For a founder, a designer and a part-time developer shaping one hosted product, Greta.sh's project roles keep ownership and billing with one person.

The verdict: Tempo is a team IDE for an engineering workflow. Greta.sh gives a product team clear roles around a hosted project.

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5. Marketplace: None Listed vs Creator Economy

Tempo's own site does not list a template marketplace or a way for users to sell what they build. What you build with Tempo lives in your own repo.

Greta.sh has a creator marketplace:

• Creators publish templates and set a price, including $0
• Creators earn when someone buys their template
• Builders can start from 100+ templates instead of a blank project
• Templates can cover the kinds of web products freelancers and agencies build again and again, from UI-heavy apps to dashboards

For freelancers and agencies that repeatedly build the same types of products, a marketplace template turns one finished build into something other builders can buy.

The verdict: Greta.sh has a creator marketplace with a direct revenue model. Tempo's site does not list one.

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6. AI Focus: Your Codebase vs Your Live Site

Tempo's AI works on your codebase. Coding agents (Claude Code and Codex) run in parallel on separate branches, already loaded with the issue and its designs. Supporting agents triage feedback into issues, write specs and designs from your real components, reproduce and fix bugs, and build features as pull requests.

That is a lot of context about your code and your backlog. What Tempo does not do is host the product or work on it after it goes live.

Greta.sh's AI builds the product and stays with it after launch. As a growth engineering platform, it:

• Generates production logic from high-level descriptions, not just individual screens
• Deploys the result in one click
• Keeps improving a published site's SEO and AI-search readability on a schedule, guided by analytics, through its self-growing websites feature
• Supports flows and a knowledge base per project on the Pro plan

The verdict: Tempo's AI helps a team move its backlog through the codebase. Greta.sh's AI builds, launches and keeps tuning the product.

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Who Should Choose Which?

Choose Tempo if you:

• Are part of a product team (design, product, engineering) with an existing codebase
• Want to run coding agents like Claude Code and Codex in parallel on your repo
• Want specs, designs and issues tied directly to your real components
• Are comfortable with your existing hosting, deployment, testing, and CI/CD workflows
• Want every change to arrive as a reviewable pull request

Choose Greta.sh if you:

• Are building a product from scratch and don't have a codebase yet
• Are a founder, startup team, or agency who needs a complete, deployed web product
• Want hosting, SSL, a CDN and custom domains handled for you
• Want simple project roles (Owner, Editor, Viewer) with billing on the Owner
• Plan to sell templates through a creator marketplace
• Want the published site to keep improving its SEO and AI-search readability after launch
• Want to go from idea to deployed product without stitching together multiple tools

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Feature Comparison at a Glance

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Why Greta.sh Wins for Founders and Product Builders

Tempo fits a specific situation well: a product team that already has a codebase, hosting and an engineering workflow, and wants designers, PMs and agents to contribute directly to that code. For that team, it delivers real value.

But many people who need to build products today don't have that setup.

The startup founders, the freelancers, the agencies, the product managers and the non-technical builders who have ideas and need applications often start without a repo, a backend or a hosting account. A tool that works on an existing codebase assumes that part is already done.

For that group, the real question is: "How do I go from idea to deployed product without a full engineering team?"

That is the question Greta.sh is built around.

When you build with Greta.sh, the product is generated, deployed and hosted in one place. The code is clean Next.js you can export. Deployment is one click. Your team can work on the project with clear roles from day one.

This is what it means to build with a growth engineering platform rather than an IDE for an existing codebase.

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The Component vs Product Distinction Matters More Than You Think

There's a pattern that repeats itself in the early stages of product development. A founder or a small team picks up a tool that generates code fast. They generate some UI. It looks great on screen. They feel momentum.

Then they need a backend, a database, auth and hosting. Each new piece is a separate service with its own configuration and maintenance. The fast start turns into a patchwork stack that is harder to manage than expected.

That's why it matters whether a tool gives you code for a project you run yourself, or a product that is already deployed.

Greta.sh is designed to cover the build, the deployment and the post-launch growth work in one platform, so a small team has fewer pieces to stitch together.

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Conclusion: Choose the Tool That Finishes the Job

Tempo is useful for teams that want AI agents working on the codebase they already have. Greta.sh is built for the whole path, from first idea to production deployment and the growth work that comes after.

If you're part of a product team with a mature codebase and you want designers, PMs and coding agents shipping pull requests together, Tempo earns its place in your workflow.

If you're building a product from scratch, as a founder, a startup team, a freelancer with a client to ship for, or a builder with an idea that needs to become a real application, Greta.sh is built to take you from idea to a live product.

Team IDEs are useful when the codebase exists. Product platforms help you get there.

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