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AI App Builders Comparison

a0.dev vs. WeWeb

At a glance

At a glance

a0.dev

Best for

Best for founders who want to ship a native mobile app to the App Store from a prompt.

  • Freelancers
  • Small and mid-sized

WeWeb

Best for

Best for teams and agencies that want a visual front end on top of Supabase or Xano and the option to export the code and host it themselves.

  • Freelancers
  • Small and mid-sized
  • Enterprise

Cataleo does not name a winner. Both statements come from the vendors themselves.

Full Comparison

Criterion a0.dev WeWeb
Starting price Not stated Free plan; paid seat and hosting plans are priced separately Pricing is split in two. A seat plan (Free, Essential, Pro, Partner) controls editor access, AI tokens, code export and MCP access; a hosting plan (Free, Launch, Grow, Scale) covers WeWeb-hosted deployments, with limits on bandwidth, storage and app sessions. A seat plan is required before a hosting plan can be added, and self-hosted apps have no session limit.
Free trial Not stated Free plan with the visual editor, WeWeb-hosted deployment with a session limit and a monthly AI token allowance
Output Native iOS and Android apps (React Native), plus web Vue.js single-page web apps, hosted by WeWeb or exported and self-hosted
API Yes Not stated
Hosting Not stated WeWeb cloud on AWS, or self-hosted after code export
What it generates Native mobile apps for iOS and Android (plus web), from a prompt Production web apps such as SaaS products, customer portals, internal tools, directories and MVPs, built visually or generated from a description by the WeWeb AI assistant
Stack and frameworks React Native Vue.js single-page applications, editable visually or extended with coded components
Auth and database Managed backend with a choice of Convex or Supabase for the database, plus built-in push notifications Supabase, Xano, Airtable, Algolia, SmartSuite and any REST API, with internal databases connected without replication; auth through Supabase Auth, Xano Auth, Auth0, OpenID, custom tokens or WeWeb Auth
Hosting and deploy One-click publishing to the App Store and Google Play (IPA/APK), with a web preview WeWeb cloud hosting on AWS, or self-hosting anywhere after code export, with a documented Cloudflare route
Payments Built-in monetization: subscriptions and one-time purchases via the App Store Yes, a Stripe plugin among the documented extensions
Access to the code Projects are built on Expo and edited by the agent inside a0's own workspace. The documentation covers runtime and Expo SDK upgrades, over-the-air updates and store publishing, and documents no source-code download, GitHub sync or local development Yes, full Vue.js code export and self-hosting from the Essential seat plan upwards
MCP-ready No stated Yes
Deployment Cloud (SaaS), Browser-based more entries Cloud (SaaS), Browser-based, On-premise
Support Community forum more entries Chat, Community forum
Onboarding Documentation and knowledge base Documentation and knowledge base
Company size Freelancers, Small and mid-sized more entries Freelancers, Small and mid-sized, Enterprise
Integrations Convex, Supabase, App Store Connect, Google Play, Firebase Cloud Messaging more entries Supabase, Xano, Airtable, Algolia, SmartSuite, Stripe

Compare more tools

Row where the values differ The small markers point at the lower number, the longer list or the stated feature. They describe the data, they are not a verdict.

The short version

Key Differences

  • Deployment a0.dev Cloud (SaaS), Browser-based WeWeb Cloud (SaaS), Browser-based, On-premise
  • Company size a0.dev Freelancers, Small and mid-sized WeWeb Freelancers, Small and mid-sized, Enterprise
  • Support a0.dev Community forum WeWeb Chat, Community forum
  • MCP-ready a0.dev No WeWeb Yes
  • Output a0.dev Native iOS and Android apps (React Native), plus web WeWeb Vue.js single-page web apps, hosted by WeWeb or exported and self-hosted

Every line is one datapoint from the table above, picked automatically. Nothing here is written text.

The trade-offs

Strengths and Limitations

a0.dev

Strengths

  • Generates a full React Native app and publishes it to the App Store and Google Play
  • Built-in monetization with subscriptions and one-time purchases
  • Convex backend and push notifications wired in

Limitations

  • Primarily a mobile app builder: it generates native iOS and Android apps, with web as a secondary target
  • Output is React Native on Expo, so you work within that stack rather than a framework of your choice

WeWeb

Strengths

  • Exports the generated Vue.js source, so an app can be self-hosted and is not locked to the platform
  • Connects to Supabase, Xano, Airtable, Algolia, SmartSuite and any REST API, including internal databases without replication
  • Six documented authentication routes, from Supabase Auth and Auth0 to a custom token flow
  • Official MCP server, so outside agents such as Claude, Cursor or ChatGPT can build inside a project

Limitations

  • Seat plan and hosting plan are billed separately, so the cost of a project depends on both
  • Code export and self-hosting require at least the Essential seat plan
  • MCP access needs a Pro or Partner plan once the 14-day trial on a new workspace ends
  • The MCP server does not expose plugin actions, so an agent cannot build with the Xano or Supabase plugins
  • It builds the front end and expects a backend such as Supabase or Xano alongside it

Plans

Pricing

WeWeb

  • Free (seat) $0 Visual editor, API integrations, WeWeb-hosted deployment with a session limit, and a monthly AI token allowance. No code export.
  • Essential (seat) Not stated Adds code export and self-hosting, and is the minimum seat plan required before a hosting plan can be added.
  • Pro (seat) Not stated Adds team seats and continued access to the WeWeb MCP server after the 14-day trial.
  • Partner (seat) Not stated For building in customer workspaces; MCP use there requires the customer workspace to be on at least Pro.
  • Hosting plans Not stated Free, Launch, Grow and Scale, added on top of a seat plan for WeWeb-hosted apps. They set deployment location, bandwidth, storage, compute and app sessions.
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What users say

Review Scores · opens after launch

a0.dev

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

WeWeb

Ease of use
Not rated yet
User interface
Not rated yet
Onboarding
Not rated yet
Support and service
Not rated yet
Value for money
Not rated yet
Features
Not rated yet

No reviews yet. Be the first to review this tool. Every review is checked for fairness before it appears, and the vendor cannot have one removed.

Where this comes from

Where this comes from

a0.dev https://a0.dev · checked against the official source on 2026-09-02

WeWeb https://www.weweb.io · checked against the official source on 2026-09-12

This table lists factual criteria taken from information the vendors publish themselves. For how we put it together, see the methodology.