ToSim is a loyalty program app for the convenient Sim23 and Simi markets. It rewards users for their loyalty and shopping choices at these markets. Users can earn points by scanning QR codes during purchases and redeem them for rewards within the ToSim app.

Additionally, users can benefit from a "Free Card" feature where every 10th product purchased from selected food and drink categories is free. The app also allows users to track their purchase history and points balance in the "Balance" section. Stay informed about discounts, promotions, and giveaways at Sim23 and Simi markets through the app's "Special Offers" section.