Tabi

Plans your travel: compares flights, hotels and local transport against your dates, budget and who's coming, builds an itinerary that isn't rushed, and checks visas, weather and local customs along the way. Flight, hotel and car rental emails become one itinerary in your knowledge base and go on your calendar. If you're waiting for a price drop or a free room, it watches that page and tells you when it changes. When booking on a website it works on your connected computer and stops at the payment step for you.

• I'm in Singapore for 5 days next week, staying in Chinatown. Work out whether an EZ-Link card, a 3-day Singapore Tourist Pass or just tapping my bank card is cheapest, including the trip in from Changi.
• I'm taking my parents to Chiang Mai for 5 days and they can't walk much. Find hotels near the Old City with elevators, plan an easy itinerary, and tell us the etiquette for visiting temples.
• Palm Springs hotels are almost full. Check every day and tell me when four nights come up for under $1,200 total, with the link.

Add it, then pick one to start its chat with.

• Gmail
• Google Calendar

Connect these when it asks. It works without them too.