HappyHome Tools is the working name of a central website, organised around real tasks. ConcreteCalc, LuBan, ArchStair and Tile Layout remain independent applications; this site introduces and links to them.
Current phase
Introductions, a catalogue, guides, verified downloads when available and feedback preparation. No accounts or cross-device project sync.
Future direction
Building → Floor → Room/Element → Option → Calculation result. The data design is documented, but is not implemented.