Mobile app for booking hotels and guided tours

We are looking for a mobile developer or team to build an app for booking hotels and guided tours. The product must ship for both iOS and Android, so a cross-platform framework is preferred, though we will consider native builds if the timeline stays reasonable. The heart of the app is search: a traveller types a city or destination, picks check-in and check-out dates and the number of guests, and immediately sees a clean list of options with photos, nightly price and rating. Flexible filters are essential — price range, star rating, board type, distance to the centre or the beach, and amenities such as pool, parking and internet. Tours need their own section with duration, a day-by-day itinerary and a list of included services. Payment has to happen inside the app through bank cards and common wallets, with the option to save a card for repeat purchases and full support for refunds. Once a payment succeeds, the customer receives an electronic voucher with a QR code that can be shown at the reception desk or to the guide. Support matters to us: a live chat with an operator, a history of requests and push notifications about booking status. We expect tidy design, fast list loading and a structure that feels obvious. Please send a portfolio of similar work, an estimate of time and cost, and your suggested stack.