Zeek app is basically a market place for buying and selling vouchers. So if someone has a voucher they won't be using, they can sell it there for a discounted price. THis gives others the opportunity to buy the vouchers for less, e.g. if you were going to spen £30 on H&M, you might find a £30 voucher at Zeek for £27 - saving you 10%! You can download the app (available on App Store and Android) and use code '2jns54', you'll receive FREE £10 to spend on any vouchers you'd like to buy!
Happy discount shopping! Let me know if you do find yourself a bargain!