Which Android app should I use for getting cash back when booking hotels and flights online?

Rakuten is a widely used cash back application that stands out for travel-related savings, particularly for hotel and flight bookings. It integrates with major travel platforms like Expedia, Booking.com, and airline websites, allowing users to earn a percentage back on their reservations. The app's in-app browser simplifies the process: users navigate to their preferred travel site through Rakuten to activate cash back, which is automatically tracked upon purchase. This feature is ideal for frequent travelers planning vacations or business trips, as it turns everyday bookings into opportunities for savings. Reviews indicate that many users accumulate meaningful cash back over time, with some reporting hundreds of dollars in rewards from annual travel. However, a common limitation involves occasional tracking failures, where cash back may not register, necessitating manual claims through customer support. The app also provides deal alerts for limited-time travel promotions, though cash back rates can fluctuate based on retailer partnerships. Payouts occur quarterly via PayPal or check, which is convenient but delays immediate access to funds. Despite these minor drawbacks, Rakuten's broad travel network and straightforward interface make it a practical choice for reducing travel expenses.