Best for
Best for founders building a SaaS MVP end-to-end from a prompt.
- Freelancers
- Small and mid-sized
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AI App Builders Comparison
At a glance
Best for
Best for founders building a SaaS MVP end-to-end from a prompt.
Best for
Best for enterprise IT teams that want AI-generated applications inside a governed low-code platform with its own architecture guard rails.
Cataleo does not name a winner. Both statements come from the vendors themselves.
| Criterion | Lovable | OutSystems |
|---|---|---|
| Starting price | Free tier; paid from ~$25 / month The free tier is limited by credits. | Free Personal Edition; OutSystems Developer Cloud quoted by the vendor ODC is metered on three things: application complexity in Application Objects, which is the sum of screens, database tables and API methods, with a typical medium app around 150 AOs; the number of internal and external end users; and advanced add-ons. A base subscription starts with one medium production application and 100 internal users. |
| Free trial | Free tier with limited credits | Free Personal Edition, no credit card required, for up to 100 internal users |
| Commercial use | Yes | Not stated |
| Output | Full-stack React and Supabase apps with auth, database and payments | Full-stack enterprise web and mobile applications with data model, server-side logic and UI screens |
| API | Not stated | Yes, API-first with CI/CD APIs and APIs for uploading external libraries |
| Hosting | Not stated | OutSystems Cloud on AWS; self-hosting is available as an advanced add-on |
| What it generates | Full-stack React apps with Supabase | Full-stack enterprise applications: Mentor generates the data model, server-side logic and UI screens from a natural language prompt or an uploaded requirements document, shows a visual blueprint before building, and then evolves the app through conversation inside the IDE with human sign-off on each implementation plan |
| Stack and frameworks | React and Supabase, with shadcn/ui components | .NET Core on Linux containers, each application isolated in its own container, orchestrated with Kubernetes on AWS; developers extend apps with custom .NET code uploaded as high-code external libraries, whose methods are exposed to the visual editor as server actions |
| Auth and database | Yes, auth and database pre-wired | Amazon Aurora Serverless with PostgreSQL compatibility as the managed database; ISO 27001 compliance is included and SOC 2 Type II and PCI DSS are advanced add-ons |
| Hosting and deploy | Yes, publish to a live URL from the platform, or sync to GitHub and deploy elsewhere | OutSystems Cloud with development, testing and production runtimes and a 99.5 percent uptime guarantee, upgradeable to 99.95 percent; extra runtimes and a self-hosted option are advanced add-ons. Built-in CI/CD pipelines with monitoring, tracing and logging |
| Payments | Yes, Stripe and Paddle | No checkout of its own; payment providers are integrated through components from the OutSystems Forge, including Stripe connectors for both ODC and OutSystems 11 that handle charges, customers and refunds, and a payments plugin covering Apple Pay, Google Pay and Stripe |
| Access to the code | GitHub sync, the code stays portable | Applications are built visually rather than in a repository of hand-written source; custom C# and .NET logic enters as external libraries uploaded through the SDK and APIs, decorated so their methods surface as server actions |
| Deployment | Cloud (SaaS), Browser-based | more entries Cloud (SaaS), Browser-based, On-premise |
| Support | Not stated | Email helpdesk, Community forum |
| Onboarding | Not stated | Documentation and knowledge base |
| Company size | more entries Freelancers, Small and mid-sized | Enterprise |
Adds a column to the table, from the tools in this category.
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
Every line is one datapoint from the table above, picked automatically. Nothing here is written text.
The trade-offs
Lovable
Strengths
Limitations
OutSystems
Strengths
Limitations
Plans
Lovable
OutSystems
What users say
Lovable
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OutSystems
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Where this comes from
Lovable https://lovable.dev · no check date recorded yet
OutSystems https://www.outsystems.com · 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.