Dev Ships 36k Lines of Code in 120 Days Using Claude

civerooni · reddit · 2026-07-31

A developer with 18 years of experience detailed how he leveraged Claude (Sonnet 4.6) to independently build and launch a full-stack app, Ticketmappr, in 120 days.

Scale & Data

From empty repo to Web and Android apps, generating 36,159 lines of code across 286 files.
86 commits over 49 active days.
The most recent stretch included 24 sessions, with the largest single session transcript hitting 16MB (1,000+ turns).

Core AI Impacts

Zero Sunk Cost: AI eliminated the mental friction of throwing away bad features. However, adding became so frictionless that conscious pruning is required to prevent codebase bloat.
Frequent Rewrites: 28% of commits were correcting, removing, or rebuilding previous work. Core systems like the background import model were rewritten from scratch.

Human Experience Still Matters

When hitting real infrastructure limits like querying and merging live events at map-pan speed, solving the issues required the developer's architectural knowledge to identify non-negotiable constraints, which couldn't be solved simply by prompting harder.

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Dev Ships 36k Lines of Code in 120 Days Using Claude

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