Jenova UI/UX Prototype Generator vs Lucid Train

Jenova UI/UX Prototype Generator turns natural-language descriptions into visual prototypes for iOS, Android, and web apps. It can create connected screens for flows such as onboarding, navigation, dashboards, settings, and edge states. Generated designs draw on iOS Human Interface Guidelines, Material Design, and modern web conventions. Users can provide brand assets or describe a visual identity, then refine layouts, colors, typography, and other details through follow-up messages. Persistent memory carries design language across sessions, and conversation history and memory sync across web, iOS, and Android. Sketch or image input and clickable prototypes are supported. The generator is also available through the Jenova API, and the listed platforms include Android, API, iOS, Linux, macOS, web, and Windows. Its output is visual prototypes rather than code repositories or production design files. A free plan offers core features with limited usage. Plus costs $20 a month, billed monthly, with higher usage limits and specific AI model selection. Jenova’s privacy policy says chat history and uploaded files are not used to train its own AI models.

Lucid Train is a desktop coding harness that draws architecture diagrams from a codebase and passes the diagram to a coding agent as a specification. The agent emits a semantic graph, and the ELK layout engine positions diagram elements and routes edges. Diagrams are Excalidraw scenes that can export to SVG and PNG or become Markdown specifications; Mermaid support and diagram import are also listed. Proposed edits appear as diffs, and commands use risk tiers, with catastrophic commands refused. Model options include local Ollama, OpenRouter, other OpenAI-compatible endpoints, and hosted cloud models. Repository files are processed locally; prompts and code go to the selected provider, or nowhere when using local models. The maker says it collects no telemetry, analytics, prompts, code, or usage data from local or bring-your-own-key sessions. API keys are stored locally or in the OS keychain. Connectors include GitHub, Vercel, Railway, and Grafana, plus arbitrary stdio MCP servers; remote HTTP and SSE servers cannot connect directly. The free CLI is open source. The native app costs $2.50 per month, billed $30 a year, and includes a 7-day free trial.