RetailMeNot

Online aggregator of the most relevant offers for economical shopping: coupons, discount cards, promotions, cashback options and more. There are over 50,000 retailers in the database, including fashion stores like Macy's, beauty brands and even car rental. It is useful both for regular shopping abroad (the application syncs with maps and shows the best deals in stores and restaurants near you), and for online shopping.
ShopGuide

Another application specializing in discounts, but already in Moscow. ShopGuide collects information on great deals from a variety of stores - from Agent Provocateur and Victoria's Secret to Podium Market and Stockmann - and then gives it out in a convenient format: with all attendances and passwords, addresses and validity periods of promotions. You can plan your shopping in advance by compiling a list of stores with sales, or choose a random method - the app will send a notification if you find yourself near a shopping outlet where the promotion is taking place.
Stylebook

Saving on shopping is not only about taking advantage of discounts, but also about saving yourself from unnecessary purchases. This is where Stylebook is a useful wardrobe organizer. It is especially useful for those who often buy the fifth skirt of the same style or the tenth pair of shoes, like two drops of water similar to the one already in the closet. Stylebook is convenient for keeping track of your wardrobe and understanding what things are already enough and what is missing.
Lyst

Large-scale online aggregator with a database of the best online stores from mass market to luxury. It helps in cases when you do not have time to study all the well-known online multi-brands and at the same time you need to find a specific item (or at least the same style, color, and so on) at the most favorable price.
MoneyBack!

Have you repeatedly faced a situation when they wanted to return the purchased goods, and the seller assured that it was impossible to do this? For such cases, it's worth having MoneyBack on hand! The application will tell you what arguments to cover the reluctance of the store staff to return money, help, if necessary, contact Rospotrebnadzor from any city in Russia and offer templates for drawing up claims.
Mobile-Pocket

A useful organizer that will allow you to keep all discount cards in one place (that is, in your smartphone) and save you from long searches for the one you need at the store checkout. You just need to scan the cards you have and upload them to the Mobile-Pocket profile - before paying, the seller reads all the necessary information right from the gadget screen.
Gilt

Yes, this is another aggregator of discounts from different stores, but its peculiarity is that it specializes exclusively in designer brands. You can search for the necessary thing, for example, by specific brands - while Gilt indicates how much time is left until the end of a particular promotion. You can also turn on notifications, and the application will notify you about the start of discounts in real time.>