Checkmate is a savings app with over one million users that have saved $$$ on brands like Trainline.
The Checkmate extension automatically applies Trainline discount codes, Trainline coupons and more to give you discounts on products like Amsterdam to London by Direct Eurostar Train from £214 | Trainline.
Checkmate users have also been loving these products from Trainline.
Users have been saving products like this to their collections.