SpectrTech Wedding Planner

SpectrTech Wedding Planner is a single-file offline app for couples planning a wedding. It opens in any desktop browser (Windows, Mac, Linux) with no account and no subscription, and all data stays on the user's computer. Inside: budget tracker, guest list with RSVPs, seating chart with auto-arrange, vendors, timeline and checklist, and a printable invitation generator (PDF / ZIP for all guests). 17 sections, 9 interface languages, 5 color themes. Live demo: https://spectrtech.github.io/demo/ Affiliates earn 50% of every $24.99 sale (about $12.50) through Gumroad's built-in affiliate system with automatic payouts.