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AI App Builders Comparison

a0.dev vs. Bubble

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

Bubble

Best for

Best for founders and teams that want to build and launch a full web or mobile app without engineers.

  • Freelancers
  • Small and mid-sized
  • Enterprise

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

Full Comparison

Criterion a0.dev Bubble
Starting price Not stated From $32 / month Starter, web only, billed monthly; $29 per month billed annually. Mobile only starts at $49 and web plus mobile at $69 monthly. A free plan covers building and testing.
Free trial Not stated Free plan
Commercial use Not stated Yes
Output Native iOS and Android apps (React Native), plus web Web apps and native mobile apps built in one visual editor, with a managed database and user accounts
API Yes Not stated
What it generates Native mobile apps for iOS and Android (plus web), from a prompt Web apps and native mobile apps built in one editor; the AI app builder can generate a complete app from a single prompt
Stack and frameworks React Native No-code visual programming: you build by pointing and clicking instead of writing code
Auth and database Managed backend with a choice of Convex or Supabase for the database, plus built-in push notifications Managed database with separate development and live environments, plus built-in user management for signup and login
Hosting and deploy One-click publishing to the App Store and Google Play (IPA/APK), with a web preview Apps run in the browser or install from the app stores as native apps, hosted on Bubble's infrastructure
Payments Built-in monetization: subscriptions and one-time purchases via the App Store Payments run through Bubble's official Stripe plugin: one-time charges and recurring subscriptions, with billing and plan management handled by Stripe
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 No-code visual editor, extended through community-made plugins
Deployment Cloud (SaaS), Browser-based Cloud (SaaS), Browser-based
Support Community forum 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 Not stated

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

  • Company size a0.dev Freelancers, Small and mid-sized Bubble Freelancers, Small and mid-sized, Enterprise
  • Output a0.dev Native iOS and Android apps (React Native), plus web Bubble Web apps and native mobile apps built in one visual editor, with a managed database and user accounts
  • What it generates a0.dev Native mobile apps for iOS and Android (plus web), from a prompt Bubble Web apps and native mobile apps built in one editor; the AI app builder can generate a complete app from a single prompt
  • Stack and frameworks a0.dev React Native Bubble No-code visual programming: you build by pointing and clicking instead of writing code
  • Auth and database a0.dev Managed backend with a choice of Convex or Supabase for the database, plus built-in push notifications Bubble Managed database with separate development and live environments, plus built-in user management for signup and login

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

Bubble

Strengths

  • Builds web and native mobile apps in a single editor
  • Generates a complete app from one prompt with the AI app builder, then lets you refine it
  • Large ecosystem of community-made plugins and connectors

Limitations

  • Priced in monthly workload units, so a busy app's running cost rises with usage instead of staying fixed
  • The free plan cannot run a live app on a custom domain

Plans

Pricing

Bubble

  • Free $0 Build and test for free; launching an app requires a paid plan.
  • Starter $32 Per month for web only ($29 billed annually). Mobile only $49, web plus mobile $69.
  • Growth $134 Per month for web only ($119 billed annually). Mobile only $199, web plus mobile $249.
  • Team $399 Per month for web only ($349 billed annually). Mobile only $529, web plus mobile $649.
  • Enterprise Not stated Quoted by Bubble; handled through an account manager.
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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.

Bubble

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

Bubble https://bubble.io · no check date recorded yet

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