Undef is the travel planner that changes the way you plan and live your trips. Build your itinerary by hand or let AI generate it for you in seconds.
For any question, issue or feedback, write us at: [email protected]
We usually reply within 24–48 hours.
Is Undef free? Yes, Undef is free to download and use. Undef Pro unlocks unlimited AI generation, advanced stats and more.
How do I create a trip? Tap the + button on the home screen or in tab bar, enter your destination and start adding stops day by day.
How does AI itinerary generation work? Describe your trip, travel style and budget. Undef AI will generate a complete itinerary with stops, local highlights and personalized suggestions in seconds.
How does automatic tracking work? Enable tracking before your trip. Undef will automatically mark stops as visited while you explore, even with your phone in your pocket.
How do I delete a stop? Open the stop you want to remove and tap the delete icon. You'll be asked to confirm before anything is removed, so no worries about accidental deletions.
How do I share my trip? Undef lets you create and share your trip at any time, you don't have to wait until the end. Tap the Share button to generate beautiful cards: trip cover, day by day view, and your stats. Add a photo to each card to make it personal, then share it wherever you like.