Solo dev builds native Swift iOS therapy app using Claude Opus 4.6 for coding, debugging, and architecture
A solo developer built Prelude, a fully offline iOS therapy preparation app, with significant help from Claude Opus 4.6. The app is free, contains no ads or in-app purchases, and stores all data on-device with zero knowledge transfer.
What the app does
Prelude runs a session agent that conducts a voice reflection session before therapy, a brief agent that generates a structured summary from the reflection, and a weekly emotional trend graph.
What Opus 4.6 handled
- Code generation for the native Swift iOS app
- Debugging complex voice agent behavior — the AI assistant worked through issues with the speech recognition and agent conversation flow
- Architecture decisions for the on-device AI pipeline — determining how to run models locally and structure data flow
- Reasoning about system design — solving problems that required genuine understanding of the full system
The developer reports that their therapist noticed improved session quality because topics were clearly listed in structured briefs they could review together.
The project would not have been possible as a solo effort without Claude handling the hardest parts.
The app is available on the App Store: Prelude – Therapy Prep
📖 Read the full source: r/ClaudeAI
👀 See Also
Claude MCP workflow automates LinkedIn lead re-engagement with adaptive constraints
A developer built a workflow using Claude with MCP to automatically re-engage old LinkedIn connections, identifying leads, generating contextual messages, and handling platform constraints adaptively. Out of 7 targeted leads, 5 messages were sent successfully while 2 were skipped due to LinkedIn restrictions.
AI agent cost breakdown: $12 monthly with local models and cloud APIs
A developer ran an AI agent for a month using Mac Mini + Ollama for local models and cloud APIs, costing $12 total with 80% local usage at $0 and 20% cloud usage at ~$12. A single retry loop consumed $4.80 in 11 minutes, prompting circuit breaker implementation.
OpenClaw Architecture: Building a Persistent AI-Driven Distribution Engine
OpenClaw's architecture, featuring a daemon-driven approach with small composable tools, declarative recipes, and a memory layer, enables continuous and efficient automation workflows.
OpenClaw Agent Burned $20 in API Tokens Due to Web Scraping Context Bloat
A developer building an OpenClaw agent to monitor financial sites accidentally consumed $20 worth of API tokens in a few hours by fetching Yahoo Finance pages that included 609,000 tokens of extraneous HTML like nav bars and cookie banners in the context window.