What is the difference between Astro and Bubble?

Astro is best for Developers wanting content-focused static sites, while Bubble is best for Non-developers wanting to build full web applications. Astro starts at Free and Bubble starts at Free.

Is Astro or Bubble cheaper?

Astro starts at Free and is free. Bubble starts at Free with a free tier.

Is there a free alternative to Bubble?

Both Astro and Bubble offer free tiers.

Astro vs Bubble

Astro is web framework for content-driven websites with island architecture and zero JS by default, while Bubble is no-code platform for building fully functional web applications with databases and logic. Astro is open source and can be self-hosted, giving you full control over your data. Astro is built for developers wanting content-focused static sites, whereas Bubble targets non-developers wanting to build full web applications.

At a glance

	Astro	Bubble
Best for	Developers wanting content-focused static sites	Non-developers wanting to build full web applications
Starting price	Free	Free
Free tier	✓	✓
Open source	✓	—
Free tier available	✓	✓
Open source	✓	—
Content Collections	✓	—
Database	—	✓
Island Architecture	✓	—
No-Code	—	✓
Plugins	—	✓
SSG/SSR	✓	—
Workflows	—	✓
Zero JS	✓	—

Astro

Strengths

Open source and transparent
Includes Island Architecture as a core feature, purpose-built for website builder workflows
Fully open-source — you can self-host, audit the code, and avoid vendor lock-in
The core product is free with no paywalled essentials

Weaknesses

May lack some advanced features
Self-hosting is free but requires server maintenance and DevOps knowledge
Fewer built-in features means you may need additional tools to cover gaps
Performance and SEO control is limited compared to custom-coded sites

Try Astro → Full review

Bubble

Strengths

Includes No-Code as a core feature, purpose-built for website builder workflows
Includes Database as a core feature, purpose-built for website builder workflows
Free for learning — generous enough for most small teams to get real work done
Established product with 14+ years on the market and a mature ecosystem

Weaknesses

Free plan exists but key features are locked behind the paid upgrade
Fewer built-in features means you may need additional tools to cover gaps
Performance and SEO control is limited compared to custom-coded sites
Limited team/admin features if your organization eventually scales up

Try Bubble → Full review

The bottom line

Pricing: Both Astro and Bubble are free. You can try both without spending a dollar.

Feature gaps: Astro offers Content Collections, Island Architecture and SSG/SSR that Bubble lacks. Bubble brings Database, No-Code and Plugins that Astro does not have.

Team fit: Both tools target small teams teams, so the decision hinges on features and workflow fit rather than scale.

Open source: Astro is open source, meaning you can self-host, audit the code, and avoid vendor lock-in. Bubble is proprietary — you are trusting the vendor with your data and uptime.

Where each tool shines: Astro's biggest strengths are: open source and transparent. includes island architecture as a core feature, purpose-built for website builder workflows. Bubble's biggest strengths are: includes no-code as a core feature, purpose-built for website builder workflows. includes database as a core feature, purpose-built for website builder workflows.

Watch out for: With Astro, users commonly note that may lack some advanced features. With Bubble, the main complaint is that free plan exists but key features are locked behind the paid upgrade.

Choose Astro if...

Your profile matches its sweet spot: developers wanting content-focused static sites
You need self-hosting, data sovereignty, or the ability to audit source code
You specifically need Content Collections and Island Architecture
You care about includes island architecture as a core feature, purpose-built for website builder workflows

Choose Bubble if...

You need a tool built for non-developers wanting to build full web applications
You specifically need Database and No-Code
You care about includes database as a core feature, purpose-built for website builder workflows
The free tier works for you: free for learning