Builds polished full-stack web applications with incredible UI design, though less specialized for native mobile stores.
Builds polished full-stack web applications with incredible UI design, though less specialized for native mobile stores.
a0.dev records 18,569 monthly visits with -35.9% month-over-month growth and Freemium pricing. OpenRouter records 19,941,437 monthly visits with -6.2% growth and Paid pricing.

Build and ship real iOS & Android apps from a chat prompt
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | a0.dev | openrouter.ai |
| Pricing Model | Freemium | Paid |
| Monthly Visits | 18.57K (18,569) | 19.94M (19,941,437) |
| MoM Traffic Delta | -10.42K (-35.9%) | -1.33M (-6.2%) |
| Primary Market & Share | 🇮🇳 India (21.9%) | 🇺🇸 United States (16.1%) |
| Direct Visits / mo | 11.26K | 11.96M |
| User Rating | 4.2 | 4.8 |
| Supported Platforms | Website | Website |

Build and ship real iOS & Android apps from a chat prompt
Chat with an agent that writes and edits your mobile app's code in real time, so changes appear as you describe them.
a0.dev handles the build, creates your App Store Connect listing, and uploads the app for you.
Set up in-app payments and subscriptions without wiring together separate payment tooling.
Develop against Convex or Supabase backends and use built-in APIs for AI inference and image generation.
One API key for hundreds of AI models from every major provider
Six hundred plus models for text, image, video, audio, transcription, embeddings, and reranking behind one OpenAI-compatible API.
Requests are rerouted to another provider on outages or rate limits by default, so you don't write custom retry logic.
The auto-router selects a model and provider per request using live marketplace performance and pricing data.
Track spend, tokens, and usage per model, provider, and team member in one place, including bring-your-own-key usage.
Builds polished full-stack web applications with incredible UI design, though less specialized for native mobile stores.
Builds polished full-stack web applications with incredible UI design, though less specialized for native mobile stores.

SpecialistOffers full programmatic control and cloud execution via an AI agent, rather than pure no-code mobile generation.
SpecialistOffers full programmatic control and cloud execution via an AI agent, rather than pure no-code mobile generation.
Converts conversational prompts into hosted web and mobile applications with automated hosting and deployment.
Converts conversational prompts into hosted web and mobile applications with automated hosting and deployment.
Offers an interactive in-browser full-stack development environment, but focuses primarily on web apps over native mobile.
Offers an interactive in-browser full-stack development environment, but focuses primarily on web apps over native mobile.
SpecialistProvides industry-leading UI component generation, though you must handle full mobile packaging and app store publishing separately.
SpecialistProvides industry-leading UI component generation, though you must handle full mobile packaging and app store publishing separately.

Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Offers robust serverless inference and GPU clusters for open models, but features a narrower selection of proprietary models.
Specializes specifically in generating native Swift and Kotlin mobile applications directly from text prompts.
Specializes specifically in generating native Swift and Kotlin mobile applications directly from text prompts.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.
Features adaptive LLM routing and automatic failover, but lacks OpenRouter's massive ecosystem of community-rated model endpoints.

Generates fully functional web applications with integrated databases and payments from text prompts.
Generates fully functional web applications with integrated databases and payments from text prompts.
SpecialistDelivers exceptional inference speed and high-throughput performance for open models, but focuses primarily on hosted weights rather than multi-provider aggregation.

Free / Open-sourceProvides self-hosted and Python SDK control over 100+ LLMs, but requires setting up your own infrastructure.