QUICK ANSWERStart with the tool that matches your immediate input.
Open Jet Lag Planner first when its stated purpose matches the result you need now. Use Packing List Generator only when it solves a separate next task.
This guide is for travelers, relocating workers, students, and families. Start with Jet Lag Planner when your immediate task is to create a practical jet lag with guided options and a downloadable result. Move to Packing List Generator only when you also need to create a practical packing list with guided options and a downloadable result.
The goal is not to run two tools automatically. It is to finish the first narrow task, inspect its result, and then decide whether Packing List Generator solves a genuinely different next step.
Both tools sit in Travel & Relocation, but they handle different inputs or outcomes. Keeping those roles separate reduces repeated work and makes verification easier.