Rails Application Modernization
Upgrade Rails apps with confidence
$5 free credits • Pay-as-you-go • Works with your existing tools
The problems you face today
How it works
Analyze Rails app structure
Plan ActiveRecord changes
Generate convention-aware code
Test with Rails testing tools
Stack-specific features
Technical implementation
Intelligent File Discovery
Hierarchical folder selection, pattern filtering, and AI relevance assessment
- Root folder selection based on task
- Targeted regex pattern groups
- LLM analyzes actual file contents
- Automatic dependency detection
- Files organized into XML for LLM consumption
Multi-Model Planning
Generate multiple implementation approaches using different AI models, then synthesize the best solution
- OpenAI GPT‑5 family (GPT‑5 and GPT‑5 Thinking/Pro), historical o‑series (e.g., o3 variants); Anthropic Claude Sonnet 4 and Opus 4.1; Google Gemini 2.5 Pro - availability and features vary by plan and endpoint (ChatGPT vs API).
- AI architect merges best insights
- Your guidance shapes the merge
Use official vendor docs to confirm features like streaming, function calling, and background mode for each model.
Quick setup for your workflow
Install PlanToCode
Download for your platform. Launches in seconds, no complex setup.
Connect your tools
Integrates with Claude Code, Cursor, Codex CLI and more.
Start planning
$5 free credits to start. Generate your first implementation plan in under a minute.
Available for macOS & Windows • $5 free credits
What developers achieve
Explore related topics
Python Django Web Development with AI
AI that understands Django's conventions and your app's architecture
TypeScript Next.js SaaS Development
Build production SaaS with AI that understands Next.js App Router
Go + Gin Microservices Development
Plan microservice changes with dependency awareness
Related resources
Ready to get started?
Join thousands of developers who ship with confidence using architectural AI planning.
Pay-as-you-go credits. $5 free for new users. No subscription traps.