"Always the best, without switching tools."
Bolt is an AI-powered builder for websites, web apps, and mobile apps. Users describe their project via prompt, and Bolt generates a working project from it in a short time.
In addition, Bolt bundles Bolt Cloud Hosting, databases, domains, authentication, file storage, analytics, and Edge Functions directly in the interface.
Bolt.new
Always the best, without switching tools
Location: USA ⓘ StackBlitz, Inc., 2443 Fillmore St #380-7122, San Francisco, CA 94115, USA.
Teams For teams with collaborative work, higher limits, and team-oriented usage. Other Enterprise Custom offering for organizations with advanced requirements.
bolt.diy Official open-source version for local/self-hosted use with your own LLM providers such as OpenAI, Anthropic, Ollama, Gemini, Mistral, xAI, DeepSeek, Bedrock, and others.
Target audience
Bolt is aimed at product managers, founders, marketers, agencies, students, and builders who want to create websites, web apps, or mobile apps without the overhead of a traditional setup. Official pages also address teams working with design systems, private registries, organizational sharing, and centralized administration. Bolt is particularly strong for people who want to move quickly from idea to prototype, landing page, or MVP while having hosting, database, and deployments directly in the tool.
Outstanding features
What stands out is the combination of prompt-to-app, model selection within Bolt, integrated infrastructure via Bolt Cloud, and direct integrations with Figma, Expo, Stripe, GitHub, Supabase, and MCP servers. Added to this are private and public publishing, custom domains, SEO-relevant hosting/publishing features, authentication, file storage, edge functions, and built-in analytics. Also relevant for teams are design system knowledge, private NPM registries, and admin/governance functions.
Main use cases
Bolt is particularly well suited for landing pages, campaign pages, prototypes, MVPs, internal tools, smaller SaaS products, and mobile app prototypes. The homepage explicitly addresses product teams, entrepreneurs, marketers, agencies, as well as learning and side-project scenarios. Because Bolt includes hosting, domains, and databases and can connect to Stripe, it is also interesting for first production web products.
Usage & notes
Operation is primarily via chat/prompt, supplemented by code view, publish/share functions, and project/cloud settings. For mobile apps, the mobile use case must be clearly specified in the prompt; Bolt uses Expo for this. It is important to know the technical limitations: Chromium desktop browsers are recommended, mobile browsers are not yet fully supported, and according to the documentation, Bolt is limited to JavaScript-based technologies for backends. For data protection and enterprise procurement, the legal documents should be reviewed individually before production use, because the public legal/compliance situation is not documented as comprehensively as with established enterprise SaaS providers.
| Target audience | Assessment |
|---|---|
| Private individuals / Makers | Very suitable – for fast web apps, websites, prototypes, and experiments via prompt. |
| Self-employed / Freelancers | Very suitable – for landing pages, MVPs, client prototypes, and simple apps without a full development team. |
| Startups / Founders | Very suitable – especially for rapid product validation, prototyping, and early app versions. |
| Agencies / Web designers | Suitable to very suitable – for quick drafts, websites, frontends, and client demos. |
| SMEs / Teams | Suitable – for internal tools and quick app ideas, provided data protection, code quality, and hosting are reviewed. |
| Large enterprises | Conditionally suitable – review the enterprise/team context; for sensitive data and complex architecture only with governance and code review. |
Hosting & Data
1) On-prem / local hosting
Meaning: The company operates the solution on its own hardware or within its own infrastructure. In the strictest sense, not only the application runs locally, but ideally the model as well.
2) Private cloud / data center
Meaning: The solution runs in a dedicated or more clearly separated cloud environment, often with a hosting provider or hyperscaler, but in a German data center or in a particularly controlled environment.
3) EU SaaS / managed
Meaning: The provider operates the solution itself as a service. The company uses the tool as a ready-made cloud service, ideally with EU data residency.
4) Hybrid
Meaning: One part of the processing remains internal / local / in a private cloud, while another part runs in an external cloud or EU SaaS.
5) AVV / DPA
Meaning: This is the data processing agreement or Data Processing Addendum. It governs that the provider processes personal data on behalf of the customer and is bound by the customer's instructions.
6) No training
Meaning: The provider does not use your prompts, uploads, attachments, chat histories, or outputs for training or improving the general model — ideally excluded by contract.
7) Open-source / transparency path
Meaning: There is a path toward greater technical transparency and sovereignty, for example through:
- open models
- documented components
- self-hostable parts
- traceable architecture
- export / switching options
| On-prem / local hosting | ❓ |
| Private cloud / data center | ❓ |
| EU SaaS / Managed | ⚠️ |
| Hybrid | ⚠️ |
| DPA / AVV | ❓ |
| No training on customer data | ✅ |
| Open source / transparency path | ⚠️ |
Overall assessment of hosting & data:
Bolt.new is a managed SaaS tool for AI app and website creation with prompt-to-app, project hosting, domains, databases, file uploads, SEO features, and AI image editing. Full on-premises hosting of Bolt.new itself is not established as a standard; however, with bolt.diy there is an official open-source/self-hosting path for similar workflows with freely selectable LLM providers. Positives include speed, end-to-end app building, hosting, database options, and an open-source fallback path. Critical points are US platform hosting, an unclear public DPA situation, dependence on third-party providers, and the necessary code/security review before going live.
Conclusion:
Bolt.new is strong for fast websites, apps, and MVPs; for GDPR-critical projects, bolt.diy or controlled in-house hosting with vetted model providers is significantly better suited.
| On-prem / local hosting | ❓ |
| Private cloud / data center | ❓ |
| EU SaaS / Managed | ⚠️ |
| Hybrid | ⚠️ |
| DPA / AVV | ❓ |
| No training on customer data | ✅ |
| Open source / transparency path | ⚠️ |
Overall assessment of hosting & data:
Bolt.new is a managed SaaS tool for AI app and website creation with prompt-to-app, project hosting, domains, databases, file uploads, SEO features, and AI image editing. Full on-premises hosting of Bolt.new itself is not established as a standard; however, with bolt.diy there is an official open-source/self-hosting path for similar workflows with freely selectable LLM providers. Positives include speed, end-to-end app building, hosting, database options, and an open-source fallback path. Critical points are US platform hosting, an unclear public DPA situation, dependence on third-party providers, and the necessary code/security review before going live.
Conclusion:
Bolt.new is strong for fast websites, apps, and MVPs; for GDPR-critical projects, bolt.diy or controlled in-house hosting with vetted model providers is significantly better suited.
Strengths & weaknesses at a glance
| Strengths | Weaknesses |
|---|---|
| • Very fast path from idea to a working prototype or MVP. | • Public privacy/compliance documentation appears thin from an EU perspective; the publicly found StackBlitz Privacy Policy is very old and refers to US hosting/transfers. |
| • Integrated cloud features instead of a zoo of tools: hosting, DB, domains, auth, file storage, analytics, edge functions. | • No verified public information is available about a freely accessible AVV/DPA page specifically for Bolt — as of April 27, 2026. |
| • Good integrations for Figma, Expo, GitHub, Stripe, Supabase, and MCP. | • According to the official documentation, Bolt only supports JavaScript-based backends; PHP or Python are explicitly listed there as incompatible. |
| • Also suitable for commercial use; according to the official docs, the code generated with Bolt/StackBlitz belongs to the user. | • Mobile browsers are not yet fully supported; desktop and Chromium-based browsers are recommended. |
| • Private publishing and team/admin features for collaborative workflows. | • Token consumption increases with project size because a large share of usage comes from reading and synchronizing the project files. |
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GDPR-compliant usage possible?
GDPR assessment: From a GDPR perspective, Bolt.new is suitable with limitations. A positive aspect is that Bolt.new belongs to StackBlitz and the platform provides public Terms/Privacy information as well as Team/Enterprise features.
Another positive is that there is an official open-source version, bolt.diy, which can be run locally or self-hosted and allows the use of your own model providers.
A negative is that the StackBlitz Privacy Policy explicitly refers to hosting in the USA, and a publicly clearly documented Bolt.new-specific DPA/AVV or general EU data residency cannot be reliably found. For projects involving personal data, the StackBlitz contract, subprocessors, model providers, Supabase/database integration, logs, secrets, and hosting of the published app should therefore be reviewed.
Server location: For StackBlitz/Bolt.new, the USA is publicly documented as the primary location; for bolt.diy/self-hosting, it is freely selectable. Further links: Bolt Pricing, StackBlitz Privacy, Bolt Docs, bolt.diy.