The best S&P 500 app depends on what you want to do. To track the index, a free data app like Yahoo Finance or Google Finance shows it in seconds. To invest in it, you need a brokerage app such as Fidelity, Schwab, Vanguard, or Robinhood to buy an S&P 500 fund like VOO, SPY, or FXAIX. Most people already have the right app.
No app is a magic tool. The apps below all read from the same market data, so the real question is whether you are tracking the number or putting money to work behind it.
Key takeaways
- There are two jobs here: tracking the S&P 500 and investing in it. Some apps do one, some do both.
- You cannot buy the S&P 500 index itself. The ticker ^GSPC is just a number. To own it, you buy a fund that holds the same 500 stocks, most commonly the ETFs VOO or SPY, or the Fidelity index fund FXAIX.
- Free tracking apps usually show quotes delayed about 15 minutes unless you pay for a real-time feed. For long-term investing, a 15-minute delay does not matter.
- Commission-free stock and ETF trading is now standard at every major U.S. broker, so the app you already use is usually good enough.
- Fees on the fund matter more than the app. FXAIX charges 0.015% per year, VOO 0.03%, and SPY 0.0945%.
Track or invest? A quick comparison
| App | Track or invest? | Real-time quotes? | Cost |
|---|---|---|---|
| Fidelity | Both (buy VOO, SPY, or FXAIX) | Real-time on your positions | Free; $0 stock/ETF trades |
| Charles Schwab | Both (buy VOO or SPY) | Real-time on your positions | Free; $0 stock/ETF trades |
| Vanguard | Both (buy VOO or SPY) | Real-time on your positions | Free; $0 stock/ETF trades |
| Robinhood | Both (buy VOO or SPY) | Real-time on your positions | Free; $0 stock/ETF trades |
| Webull | Both (buy VOO or SPY) | Real-time on your positions | Free; $0 stock/ETF trades |
| Yahoo Finance | Track only | ~15-min delayed free; real-time on Premium | Free; paid tiers |
| Google Finance | Track only | Real-time in the Android app | Free |
| Investing.com | Track only | Streaming quotes, often delayed on free | Free; paid tiers |
| Stocktwits | Track and discuss | Delayed | Free; paid tiers |
Notes: VOO and SPY trade commission-free at every major broker. FXAIX is a mutual fund and trades commission-free only inside Fidelity. Google Finance launched a standalone Android app in June 2026; iOS users still use the web version.
How to actually buy the S&P 500 in an app (VOO, SPY, or FXAIX)
Tracking the index and investing in it are different actions. A data app like Yahoo Finance will show you ^GSPC all day, but there is no Buy button, because an index is not a security you can hold. To invest, you buy a fund that owns the same basket of stocks. Here is the flow inside any brokerage app:
- Open your broker's app (Fidelity, Schwab, Vanguard, Robinhood, or Webull) and fund the account.
- Search a ticker, not "S&P 500." The common choices are VOO (Vanguard), SPY (SPDR), IVV (iShares), or FXAIX (Fidelity's index mutual fund).
- Choose ETF or mutual fund. VOO, SPY, and IVV are ETFs that trade during market hours at a live price. FXAIX is a mutual fund that settles once a day at the closing price. Both track the same index.
- Place the order. With a commission-free broker there is no trade fee. If you want to invest a round dollar amount rather than whole shares, use fractional shares. Fidelity and Robinhood let you start at $1, and Schwab offers fractional buying through Stock Slices.
- Set it and check it rarely. For a buy-and-hold S&P 500 position, a delayed quote in a free app is fine.
If you are choosing between an ETF and a Fidelity index fund inside a retirement account, our VOO vs FXAIX for a Roth IRA breakdown covers the trade-offs. If you are weighing the two most popular ETFs, see SPY vs the S&P 500.
What to look for
A few things separate a useful app from a distracting one:
- Real-time vs delayed quotes. Free apps typically show prices delayed about 15 minutes. Yahoo Finance sells real-time data on its Premium tier, and brokerage apps show real-time prices on the positions you hold. Day traders care about this; long-term investors do not.
- Price return vs total return. The headline S&P 500 number is a price index and leaves out dividends. Over decades, reinvested dividends are a large share of the total return, so a chart of ^GSPC understates what an actual VOO or SPY holder earned. If you want the real figure, look for a total-return chart or check your fund's total return.
- Fund fees, not app fees. The apps are free. What you pay every year is the fund's expense ratio: FXAIX 0.015%, VOO 0.03%, SPY 0.0945%. On a large balance, that gap compounds.
- Trading costs. Commission-free stock and ETF trades are standard at the major brokers, so paying a per-trade commission for a plain S&P 500 ETF is a sign you are in the wrong app.
- What you actually need. If you only want to glance at the index, a data app is plenty. If you want to own it, skip the middleman and use the broker's app, since it both tracks and buys.
For pulling the numbers into your own spreadsheet, see our guide on downloading S&P 500 historical data into Excel. For the wider set of tools and questions around the index, start at our S&P 500 hub.
The honest bottom line
There is no single best S&P 500 app, and no app gives you an edge on the market. A free data app answers "where is the index right now." A brokerage app answers "how do I own it," and since commission-free trading is now standard, the app you already have is very likely enough. Pick the low-fee fund, buy it in whatever broker app you trust, and let it run.
Frequently asked questions
Can you buy the S&P 500 index directly in an app?
No, you cannot buy the S&P 500 index itself. The ticker ^GSPC is just a number, not a security you can hold. To own it, you buy a fund that holds the same 500 stocks, most commonly the ETFs VOO or SPY, or the Fidelity index mutual fund FXAIX. A data app shows the index all day but has no Buy button.
What is the difference between a tracking app and an investing app for the S&P 500?
A tracking app like Yahoo Finance or Google Finance shows the index in seconds but only displays the number. An investing app is a brokerage such as Fidelity, Schwab, Vanguard, or Robinhood, where you actually buy an S&P 500 fund. Some apps do one job, some do both. Most people already have the right app for what they need.
Do free S&P 500 apps show real-time prices?
Free tracking apps usually show quotes delayed about 15 minutes unless you pay for a real-time feed. Yahoo Finance sells real-time data on its Premium tier, and brokerage apps show real-time prices on the positions you hold. For long-term buy-and-hold investing, a 15-minute delay does not matter; only day traders need real-time quotes.
Do fund fees matter more than which S&P 500 app you use?
Yes, fees on the fund matter more than the app, since the apps are free and read from the same market data. FXAIX charges 0.015% per year, VOO 0.03%, and SPY 0.0945%. On a large balance, that gap compounds. Commission-free stock and ETF trading is now standard at every major US broker, so the app you already use is usually enough.