From budget to adventure in minutes
A simple flow that makes trip planning effortless
Set your budget
Start with your number. Enter your destination, dates, travelers, preferences, and most importantly, your total budget. Sully uses this to anchor your entire trip. Instead of building trips from price lists, we build from what you can actually spend.
Get your smart itinerary
Sully builds your trip. In seconds, Sully generates complete itineraries optimized to fit your budget.
What you get:
A clear budget breakdown
Balanced daily schedules
Multiple travel styles to choose from
Refine & book
Make it yours. Chat with Sully to edit your plan. You can do things like, upgrade hotels, adjust activities, add vegan meals or golf tee times. Watch your trip re-optimize in real-time.
When ready:
Set or share your trip with your friends or family
Book your trip
Travel with Sully as your live travel companion
Travel smarter with Sully by your side
Three powerful ways Tandem transforms how you plan and experience trips.
Budget-first planning
Plan around what you can spend — not endless options
Sully starts with your total travel budget, then automatically balances lodging, food, activities, and transportation into a complete trip that fits your number — no spreadsheets or guesswork required.
Personal travel companion
Sully learns what you love — and travels with you
More than a planner, Sully remembers your tastes, adapts to your needs, and suggests experiences in real time — like a trusted friend who already knows your style.
Real options, one itinerary
Every trip built with bookable experiences
Each itinerary pulls from real hotels, dining, transportation, and activities — giving you credible options you can verify and book instantly through trusted partners.
Travel together
Shared planning, zero chaos
Trips are better when everyone’s aligned — but group planning is usually messy. Tandem lets you invite travel companions to collaborate on the same itinerary, vote on changes, and stay synced in real time — all while Sully protects the shared budget.
Itineraries for all our needs
Hotels and Airbnbs
Stay at the best hotels around the world for the best prices.
Airfare
Fly in and out of anywhere. Live large and upgrade to first class.
Experiences
Find activities that your friends and family will love.
Food & beverage
Reserve a table at a fancy Italian restaurant or grab a beer.
Car rental
From race cars to off-roaders, your next adventure is waiting.
Live updates
Bad weather? No problem, ask Sully to book a movie instead.