Automatically finds and test coupons while you shop online. Install now and start saving money!
Find Coupons Instantly
Automatically discover coupons while shopping online. Save in ways you never thought were possible!
Test The Promo Codes
We test and apply the best promo codes for you in a matter of seconds so you don’t have to!
Collaborating with 60,000+ Stores Worldwide
More than 60,000 stores from worldwide are teaming with CouponDuos, helping you save on the brands that you love.
Best Part: CouponDuos is free!
Latest reviews
- (2021-08-05) Xintong Liu: Very efficient coupon searcher! Saved my time looking across all the coupon sites on google! And it gives me the best ones!
- (2021-03-16) Jie Zhang: Very light and easy to use plugin. I like it that the available coupons shows up each time I visit a shopping website. I have several sites that I visit frequently but don't want to spend time searching for coupons. Knowing coupons available ahead saves me a lot of time. Thanks!
- (2021-03-15) Michael Chen: Found coupons automatically for me. Well done.
- (2021-03-15) echo chen: Love it. Saved a lot of money on Shein and Zaful!!