SadTik is an online classified advertising platform serving users across Iran. It helps individuals and businesses discover opportunities and publish advertisements for goods, services, properties, vehicles, and jobs. Listings span categories including services and businesses, industrial equipment, personal items, vehicles, home products, medical and health-related offerings, digital goods, entertainment, real estate, and employment.

Users can search listings by category and location, with options to browse across Iran or select specific provinces and cities. Advanced search tools are available to help narrow results and find relevant products and services. SadTik also provides account registration, ad submission, and order-related features, alongside information about the platform, its rules, news, and contact channels.

The service promotes free advertising nationwide and offers mobile access, with installation options for Android and iPhone. Its broad category coverage and location-based browsing make SadTik a marketplace for connecting people with local and nationwide buying, selling, hiring, and service opportunities.