What's the best iOS app for coordinating multiple tour bookings and handling last-minute changes during international travel?

Viator Tours & Attractions is a robust platform for travelers who need to manage and adapt their activity schedules abroad. The app excels by providing a unified hub where users can book, store, and modify tours and attractions from thousands of global providers. Key features include a real-time chat function for customer service, which allows for refund requests, rebooking, and personalized assistance without switching apps. Users report that this streamlines trip planning, with one review noting efficient handling of changes. For real-world scenarios, such as a family navigating a multi-city European trip, the app sends reminders, offers offline ticket access, and enables same-day bookings in many locations based on geolocation. However, some limitations exist: reviews indicate occasional tour cancellations by operators without warning, which can disrupt plans. Viator typically offers alternatives or refunds, but outcomes depend on individual provider policies. The interface is praised for its clarity, with filtering options for price, duration, and ratings, though sporadic app updates may introduce minor bugs. Overall, it balances convenience with reliable support, though users should verify cancellation terms for each booking.