S Plus Fund is an Iranian online investment and financial-services platform designed to bring multiple markets and tools together in one place. It offers access to cryptocurrency and other investment categories, including gold and precious metals, foreign stocks, and indices, with live market prices and trading information. Users can register and complete identity verification online, fund an account, and begin buying or selling through a streamlined process intended for both new and experienced investors.

The platform also promotes asset management, investment advice, educational resources, market news, and tools for comparing historical returns across assets such as gold, Bitcoin, and the US dollar. Its collateral-based liquidity service allows customers to pledge assets, including gold or cryptocurrencies, to seek credit without selling them. S Plus Fund highlights transparent asset management, a simple user experience, and access to dedicated financial guidance as central features. The website also provides a referral program, a learning center, and customer support information to help users navigate its services and the wider financial markets.