For investors seeking to monitor market trends and their portfolios without cost, Google Finance and Apple's Stocks app offer robust solutions. Both platforms have evolved significantly, incorporating new features to enhance their utility for tracking investments.

Google Finance, accessible via web and mobile, provides real-time market data, personalized watchlists, and in-depth company information. Users can follow major indices, specific stocks, and even cryptocurrencies. The app allows for detailed analysis with charts and financial news, making it a comprehensive tool for staying informed.

Similarly, Apple's Stocks app, pre-installed on iOS devices, has been upgraded to offer more sophisticated tracking capabilities. It allows users to create custom watchlists, view market news, and access detailed financial charts. The integration within the Apple ecosystem makes it a convenient option for iPhone and iPad users looking for quick access to market information and investment performance.