This is an official mobile app for OkTools, a popular Russian website for sending cards and messages. The app has many categories for sending messages and greeting cards to your friends, family, and loved ones, including birthdays, anniversaries, holidays, good morning, good night, Christmas, Valentine's day, and others. 

You can send your favorite greeting cards to any of your friends or relatives directly from the app. The cards are available in many different themes, including birthday, anniversary, Christmas, Valentine's, and others. You can send an animated GIF card to your friend or loved one. 

You can send stickers, animated GIF stickers, and postcards to any application or social network, directly from the app. You can also send the same message to a group of friends or relatives.