Marissa Mayer's push to modernize her company's core products hit Yahoo Finance today, as the company introduced redesigned web and iOS apps designed to make market data feel better tailored to individual portfolios. Highlights include new navigation, redesigned charts, and a variety of news and data feeds that change depending on which companies you're interested in. "We wanted to make it a much more personalized, beautiful, real-time experience," said Alex Diaz, the company's vice president for emerging and mobile products, in an interview.

Long the number one finance site for consumers, the new web version of Yahoo Finance shifts navigation elements to a left-hand rail so that news and charts dominate the center of the screen. The stories that appear will change depending on what stocks you choose to follow, and a new Markets page offers an at-a-glance view of everything important happening in the financial world. That includes market-moving news, a calendar of key events, and a real-time ticker of trending stocks, among other widgets. In another nice change, you can also link your brokerage accounts to Yahoo to get a Mint-like look at your portfolio. The new look isn't a total departure from the previous design, retaining lots of white space and room for charts. But it does look somewhat cleaner.

A cleaner look for the popular finance site

Meanwhile, the Yahoo Finance mobile app has gotten an iOS 7 makeover in keeping with the company's recent redesigns of its apps for weather, news, and mail. Lightweight fonts, sliding panels, and frosted glass effects — they're all here. For the first time, the finance app will send you push notifications, and they're personalized — if you follow Apple, for example, and the company makes an acquisition, Yahoo Finance will ping you. It's also easy to follow and unfollow stocks from inside the app. Meanwhile, charts are more interactive — put your phone in landscape mode, and you can swipe, pinch, and zoom in and out of historical data on your company of choice. You can also compare stocks and markets that way.

The app is also now universal for iPhone and iPad; previously, Yahoo Finance had a separate iPad app named Yahoo MarketDash. That's going away. The new app is available only in the United States for now. The company wouldn't confirm that an Android version is in the works, but it's reasonable to assume one is forthcoming.

Update: A Yahoo spokeswoman says the rollout of the web version of Yahoo Finance has been delayed. It will roll out "soon" but won't be available to 100 percent of users today, the spokeswoman said.