Need to correctly reroute a bathtub drain that currently protrudes through the basement ceiling, without modifying the toilet drain line.

Implied Software Gaps

• No easy-to-use, code-aware plumbing design tool for non-professionals; users rely on forum advice or YouTube videos.

DrainPlanner Pro

An augmented reality plumbing design tool that lets homeowners and DIYers visualize and plan drain pipe rerouting. It provides step-by-step guidance on correct pipe sizing (1.5" vs 2"), fitting selection (Y-branch, caps), and ensures compliance with local codes, all without needing to modify existing toilet drains.