Koi

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Your Online Payment Assistant

Latest reviews

• (2020-07-12) Darius Guillory: I love this extension! It makes shopping so much easier. I wish I could give it more than five stars. I highly recommend it !!!!
• (2020-07-07) Larry Phillips Jr.: I only wish I had this sooner! The algorithm is very cohesive and the platform is very user friendly. I could've easily saved a lot of money over the years had I been doing what this app does FOR YOU. Very nicely done.
• (2020-07-07) Daniel Lopez: Easy to use. Right every time.
• (2020-07-03) Z.: Exactly what I need when I do online shopping! I don't have to study the rule of rewards program for each credit card, this extension takes care of that for me.
• (2020-07-03) Changmin Shi: This extension is quite meaningful especially in terms of checking-out when doing online shopping. It is a good tool for cash-reward management. Recommend to use it!
• (2020-07-03) Delivery guy: Works on Amazon, nice one.
• (2020-07-03) Nick: Great tool for Cashback rewards. Useful on a day to day basis and very easy to use!
• (2020-07-02) Grace Redifer: I can't believe how easy this is to use! If I'm spending money, might as well get as much cash back as possible too - and this extension makes it so simple. Highly recommend.
• (2020-07-02) Kara McKeon: Easy to use, and helps me keep track of my credit card advantages (something I've always been to lazy to think about). A mindless way to get a lil extra cash!
• (2020-07-01) Banruo Zhou: Super easy to use! Highly recommend!
• (2020-07-01) Spencer Grant: This extension makes my life so much easier! Now instead of having to try to remember which cards are best for which sites, I can just enter all my cards in and let Koi handle it. Would definitely recommend this to anyone who has multiple credit cards and wants to save money without having to focus on which card is best for which purchase!
• (2020-06-29) Brandon: Super nifty tool, a friend recommended I try this out and I love it
• (2020-06-28) Cullen Ratkelis: Very smooth and easily accessible interface. Felt very comfortable about the security when inputting my important card numbers. Always important for me, as a student to maximize the amount of money I get back with my different credit cards.
• (2020-06-28) Craig Johnson: Koi is awesome. I always have a hard time choosing which card to use and it can be really annoying to enter my card every time I shop. Koi's autofill is seamless. It maximizes my cash back, making my card management game much easier. Highly recommend for anybody with more than one card.
• (2020-06-28) Andrew: Very helpful tool to maximize credit card rewards
• (2020-06-27) Joe Fu: Useful
• (2020-06-27) Xuanyi Zhao: I am a recent graduate software engineer working in San Franscisco. I have trouble figuring out which of my 5 credit cards can give me highest reward when I shop online. Luckily, I met Koi. Koi is an amazing extension and it autofill the credit card that can give the highest cashback and rewards. I have been getting perks and building my credit history with Koi.
• (2020-06-26) William C: Koi is my favorite extension! I heard so many great things about Koi credit card rewards optimization from my friends. I frequently shop on websites like Macy and Amazon. Koi would always popup to recommend the right credit cards to maximize my rewards benefits. I checked my bank account and I realized I have earned so much accumulated so much rewards and cashback. Thank you Koi!
• (2020-06-26) Jason Dong: Would definitely recommend Koi to anybody who wants to maximize cash back for their credit cards. I always have a hard time at checkout trying to figure out which credit card to use, but having an extension autofill it for me is a huge help. Incredibly useful and easy to set up.
• (2020-06-26) Olivia Zhou: Love the simplicity of the design, love the convenience of the app! You don't need do penny-pinching after using Koi. It helps you automatically maximize cash back saving. Highly recommended!
• (2020-06-25) Shirley Luong: I never know what credit card to use whenever I'm buying stuff online, Koi helps make that decision for me. Now, I can optimize my return and cash back never having to miss out on credit card points ever again. I will never buy anything online without using Koi's easy autofill option!
• (2020-06-25) Hongyang Jack Li: As a student, I love Koi. This helps me maximize the cash back for my credit cards. Whenever I shop online, Koi pops up conveniently at the checkout page. So I always know which credit card to use. This is great for me to save up a lot of cash back. Now I can have money for ordering food delivery.
• (2020-06-24) Lindsay McKendrick: This extension has earned me so much money with online shopping! The autofill feature makes it so quick and easy to find the best payment option with no effort on my part. The best part? Koi is completely risk free, none of my personal info ever leaves my computer so it is protected. Thank you Koi!!
• (2020-06-24) Caroline Hess: This extension has been great for online shopping (especially during quarantine). I added all my cards to my account and now whenever I shop online, it tells me which credit card to use and how much cashback I'm earning. This is something I never really thought about before, so it's been great saving some extra money when shopping. Would definitely recommend!
• (2020-06-24) Walker Basham: Incredibly easy to autofill credit cards with this app. I also feel safe using this knowing all information is saved onto my hard drive. Would absolutely recommend this to any online shopper.
• (2020-06-24) Andre Guacelli: Pretty good extension, makes it easy to choose which card to pay with for maximum rewards!
• (2020-06-23) Garrison Xian: It's the best autofill extension out there. It has incredible security as everything is saved to your hard drive, and it automatically chooses the credit card with the best rewards for the purchase. EVERYONE SHOULD USE IT!!!
• (2020-06-23) Emily Zhao: Great Extension for cash back! I love it! I have earned extra hundred dollars of cash back by using this app on Amazon and Macy shopping. It helps me take advantage of many credit card rewards program!