OnSpace AI

Overview

OnSpace AI is a no-code development platform founded by William Penrose and headquartered in San Francisco, California. The company built its "Prompt-to-Product" engine to close the gap between AI prototypes and revenue-generating software, letting non-technical founders go from idea to published app without managing servers, compilers, or Apple hardware. The platform runs on the web and ships a companion mobile creator app for iOS and Android, so users can prototype and iterate from any device. Underneath every project, OnSpace generates professional-grade React and TypeScript code backed by Supabase for authentication and data storage. The agentic layer relies on Claude Sonnet 4 throughout the build workflow, handling autonomous planning, code generation, and iteration in a single session. What sets OnSpace apart from web-first competitors like Bolt.new and Lovable is native mobile output. Those platforms build web applications only. OnSpace produces iOS and Android apps in the same build pass, includes direct App Store and Google Play publishing, and bundles RevenueCat for in-app purchases and Stripe for web payments out of the box — removing weeks of backend configuration that founders would otherwise handle themselves.

Features

• Natural language prompt-to-app generation -- describe an app in plain text and the agentic engine produces a working build across iOS, Android, and web simultaneously
• Agentic mode with Claude Sonnet 4 -- an AI agent plans, writes, debugs, and iterates on complex app logic autonomously during each session
• Native iOS and Android output -- generates native mobile apps, not web wrappers, from the same project that produces the React website
• Direct App Store and Google Play publishing -- submits apps to both mobile storefronts from within the platform without requiring Apple hardware
• Supabase-backed database and authentication -- user logins, data storage, and row-level security are provisioned automatically with zero server configuration
• Stripe payment integration -- web subscription and one-time payment flows are wired in without manual backend setup
• RevenueCat in-app purchase integration -- mobile subscription logic for iOS and Android is handled natively, bypassing weeks of StoreKit and Google Play Billing configuration
• Figma and screenshot import -- paste a design file or upload a screenshot to generate a functional app from an existing visual
• GitHub version control -- every change is committed to a repository the user owns, preserving full history and enabling off-platform development
• React and TypeScript code generation -- outputs production-grade, human-readable source code that developers can maintain and extend independently
• Real-time visual preview -- changes appear in a live preview window as the agent builds, allowing immediate review before deployment
• Mobile creator app -- a companion iOS and Android app lets users prototype, edit, and monitor projects from a phone or tablet
• Third-party API and library integration -- connect external APIs and npm packages within the builder without leaving the interface
• Private projects -- paid plans keep projects hidden from the public project gallery
• Custom domains -- attach a custom domain to web app deployments on paid plans
• Fast track generation -- priority queue access on paid plans accelerates build speed during peak usage
• Credit rollover -- unused monthly credits carry forward to the next billing period on paid plans, capped at one month's allocation
• APK download -- download the Android application package directly for sideloading or custom distribution on paid plans

Best For

Non-Technical Founders and Entrepreneurs, Mobile App Builders Without Apple Hardware, SaaS Prototypers and MVP Developers, Small Teams and Scaling Startups

How It Works

A user opens a project and describes their app in plain language. The agentic mode, powered by Claude, reads the prompt, breaks it into subtasks, writes the code, connects the backend, and surfaces a real-time preview — all inside one session. The agent can plan, execute, and iterate on complex app logic without the user leaving the interface, which is where OnSpace diverges from simpler code generators that require human-guided edits after each generation step. Users can also start from a Figma file or screenshot instead of a text prompt, and the platform parses the design into functional components with authentication, database tables, and payment flows already wired in. GitHub integration records every change to a repository the user owns, so teams retain full version history. The code generator outputs production-ready React and TypeScript, meaning the codebase can be taken off-platform and maintained by developers if the project outgrows the builder. Cloud-based compilation removes the need for Apple hardware. A Windows or Linux user can build and submit a native iOS app without owning a Mac. Once a project is ready, OnSpace handles App Store and Google Play submission from within the dashboard, and the built-in RevenueCat integration manages in-app subscription logic without a separate backend service.

Frequently Asked Questions

What is OnSpace AI and what does it do?

OnSpace AI is a no-code agentic app builder that converts natural language prompts into native iOS, Android, and web applications. An AI agent powered by Claude handles planning, code generation, and iteration autonomously. The platform connects Supabase for backend data, Stripe for web payments, and RevenueCat for mobile in-app purchases without requiring users to write code or manage servers.

Is OnSpace AI free to use?

OnSpace AI has a free tier that includes 2,000 monthly credits with a 500 daily limit. The free plan covers iOS, Android, and web app building plus core agentic features. Public projects only on the free tier. Paid Pro plans start at $25 per month for 7,500 credits and unlock private projects, custom domains, and credit rollovers.

Who is OnSpace AI best for?

OnSpace AI is best suited for non-technical founders who want to ship a real app without hiring developers, mobile builders who lack Apple hardware and need cloud-based iOS compilation, and early-stage SaaS teams building MVPs quickly. It is less suited for developers who need full framework flexibility (React, Next.js, Vue, Svelte choices) or complex custom backends beyond what Supabase provides out of the box.

How does OnSpace AI compare to Bolt.new and Lovable?

OnSpace AI is the only major AI builder that outputs native iOS and Android apps alongside web apps in the same project. Bolt.new and Lovable focus on web applications and do not support native mobile output or App Store publishing. Lovable offers stronger GitHub integration where every change is committed automatically. Bolt.new provides greater framework flexibility across React, Next.js, Vue, Svelte, and Astro. OnSpace has built-in RevenueCat and Stripe integrations that both competitors require manual setup to replicate.

What are the main limitations of OnSpace AI?

OnSpace is best suited for simple to moderately complex applications. Highly customized or enterprise-grade apps requiring specialized backend logic or non-standard frameworks are not well served by the platform. Users report limited memory and context for long-running agent sessions, a credit system that can feel restrictive on the free tier, and less framework flexibility than Bolt.new for developers who want full control over their stack.

Can I own and export the code generated by OnSpace AI?

Yes. OnSpace generates professional-grade React and TypeScript source code that users own outright. GitHub integration is available on paid plans, and the code is designed to be maintained or extended by developers independently of the platform. Android APK downloads are available on paid plans for direct distribution outside the Google Play Store.

Does OnSpace AI require Apple hardware to build iOS apps?

No. OnSpace compiles iOS apps in the cloud, so Windows and Linux users can build and submit native iOS applications to the App Store without owning a Mac. This cloud-based compilation is one of the platform's primary differentiators for mobile-focused builders who do not work in the Apple ecosystem.