SeatBoost is a free mobile app available on Android devices that allows users to bid on last-minute seat upgrades for flights. With SeatBoost, users can join live auctions for desired classes 24 hours before their flight and bid for upgrades for themselves and their travel companions. Winners only pay if they win the auction and receive their upgrades automatically at the end of the auction.

Currently, SeatBoost is available on TAP Air Portugal, with more airlines coming soon. To stay updated on SeatBoost's partnerships with new airlines, users can sign up for their email list on their website. For any questions or concerns, users can contact SeatBoost through their website's contact page.

SeatBoost is a great option for those looking to upgrade their flight experience without breaking the bank. With its easy-to-use interface and straightforward bidding process, SeatBoost is a must-have app for frequent flyers.