GrainRun helps woodworkers, cabinetmakers, and luthiers identify wood grain direction and avoid costly surface tearout when planing, jointing, or routing hardwood lumber. Planing against the grain frequently leads to rough surfaces, tearout, and damaged workpieces. GrainRun provides clear visual references and systematic inspection guides to help you read cathedral patterns, end-grain growth rings, ray flecks, and edge grain runout before making a cut. Built for real workshops, GrainRun operates completely offline with no cellular connection required. Whether working in a basement shop, an off-grid timber frame site, or a metal building with poor reception, all visual diagnostic guides and grain reading references remain immediately accessible. Key Features: • Grain Direction Diagnostics: Step-by-step guides for interpreting face-grain cathedral arches, edge runout angles, and bark-side versus pith-side orientation. • End-Grain Growth Ring Reference: Analyze annular ring curvature and annual growth patterns to anticipate board movement and proper orientation on the jointer. • Figured Wood Support: Practical techniques for identifying grain shifts in curly maple, quartersawn oak ray flecks, burl, and interlocked grain species. • Surface Defect Prevention: Diagnostic checklist to eliminate chatter, tearout, scalloping, and gouges on bench planes and thickness planers. • 100% Offline Reliability: Zero dependence on cloud connectivity, user accounts, or external network access inside your workshop. • Privacy-Focused: No analytics trackers, no account registration, and no background network calls. Elevate your milling accuracy and achieve smooth hand-planed surfaces with GrainRun.

Data Safety & Offline Privacy Guarantee:
- 100% Offline: This application operates entirely on your device without requiring an active internet connection.
- Zero Data Collection: We do not collect, monitor, track, store, or transmit any personal identifiable information (PII), device identifiers, or usage telemetry.
- No Accounts or Subscriptions: Enjoy complete utility with zero account creation, logins, or hidden recurring fees.
- Local Storage Only: All items, history, and preferences are retained strictly within on-device sandboxed storage.

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