Builds a day-by-day jet lag plan from flight times and your usual sleep hours. Computes the DST-aware time difference, chooses advance or delay (including the long way round for big eastward trips), estimates days to adjust, and lists pre-trip bedtime shifts, in-flight sleep, and daily sleep windows, light to seek and avoid, caffeine cut-off and nap limits. Flags short trips. Includes a stdlib Python planner with --self-test.
Splits shared costs for a group trip, house share, or event: equal, subset, weighted, or exact splits, mixed currencies with stated rates, and repayments already made, all in integer cents so totals match. Produces per-person balances and a short "who pays whom" list (at most one transfer fewer than people). Use when friends ask "who owes what?" after a trip or a shared house month. Includes a stdlib Python splitter with --self-test.
Writes the packing list for each trip from the weather, the events on your calendar, the laundry situation and what you forgot last time.
Sees a long layover on your itinerary and plans a mini-adventure: what you can see in the time you have, transit to and from the airport, and a hard 'be back by' time.
When a flight is delayed or cancelled, it immediately tells you your rights (EU261, DOT rules), what to ask for at the counter, and drafts the compensation claim.
Checks every upcoming trip against your passports: visa rules, passport validity, transit requirements and entry forms, and warns you early enough to act.
