iOS App Built Entirely with Claude Code by Non-Engineer Ships to App Store

App Overview

SpectraSort is an iOS app that sorts iPhone photos using on-device AI. It has two modes: one ranks photos by quality (sharpness, exposure, composition), while the other learns your personal taste after approximately 30 swipes and sorts based on your preferences. The app builds a profile of your photography preferences that can be shared with others.

Development Process with Claude Code

The developer is a product manager, not an engineer, with no iOS development experience. They had never built an iOS app before, never written Swift, and described themselves as someone who "can't code. Like at all." The entire application was built using Claude Code, including:

• SwiftUI implementation
• CoreML integration
• Vision framework usage
• ML pipeline development

The project started as a Gradio prototype to test if AI sorting worked, then transitioned to native iOS development. The developer worked with Claude Code over several months, starting on earlier Opus versions and transitioning to versions 4.5/4.6.

Technical Details

The app processes everything on-device with no cloud processing. It achieves about 10 photos/second on the Neural Engine, though this varies depending on device model. The app uses on-device inference for all AI operations.

Developer Observations

After months of daily use with Claude Code, the developer noted:

• Claude Code gets noticeably better over time, with significant improvements from earlier Opus versions to 4.5/4.6
• The jump to newer versions resulted in more autonomous operation, fewer bugs, and better context retention across sessions
• Working with Claude Code feels like working with a real product team rather than "prompting a computer"
• The process resembles sculpture more than traditional software development: initial direction, building a version, then shaping together
• Development is organic and responsive to what's actually in front of you rather than being constrained by specifications
• Direction can change mid-stream faster than any agile sprint

App Availability

SpectraSort is available on the App Store with a free 7-day trial. After the trial period, a paid tier is required for saving and sharing results, but sorting remains free. The app can be found at https://spectrasort.app.