Updated November 1, 2021

Best Investment Apps for 2021

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Not all investing apps are worth it. Learn how investment apps like Acorns and Robinhood compare to others.

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Here are the best investment apps for investing in 2021

What are you saving money for?

What to Look for in Investing Apps

Consider these important points BEFORE choosing the best app for your needs.

  • Fees: Most investing apps are free, but some make you pay per trade. Some charge a yearly or monthly fee.

  • Accessibility: Not all apps work on both iOS and Android devices, and some are best suited for desktop.

  • Variety of offerings: Not all investing apps offer every type of trade or account type. So make sure the one you choose offers the products you're looking for.

  • Research and tools: For DIY investors, choose an app that meets your needs. Some apps are very bare-bones.

For passive investors, some apps will select investments and manage your portfolio for you. Look into a robo-advisor if you wish to be hands-off.

Are investing apps safe? Brokerages offer SIPC insurance, which protects your assets when a SIPC-member brokerage firm fails financially (up to $500,000 per account type). All apps in this list are safely covered by SIPC insurance.[1]

Best Investing Apps

We've compiled a list of the best investment apps for every type of investor. Click the links to learn more in detailed reviews.

Annual FeeMinimum Deposit
StarStarStarStarEmpty StarEmpty Star
  • STASH Beginner ($1/mo)
  • STASH Growth ($3/mo)
  • STASH+ ($9/mo)
$0Learn More
StarStarStarStarEmpty StarEmpty Star
All trades are commission-free. No platform fees.$0Learn More
M1 Finance
StarStarStarStarEmpty StarEmpty Star
None$100Learn More
StarStarStarStarStarEmpty Star
  • $3/mo for Acorns Personal (includes personal taxable account, IRA, and checking account)
  • $5/mo for Acorns Family (includes everything in Personal plus investment accounts for kids)
$0Learn More
StarStarStarStarStarEmpty Star
  • 0.25% for accounts under $100,000
  • 0.40% for accounts $100,000+
$0Learn More

🏆 Stash: Best Investing App for Beginners

Stash was made for beginners with no investing experience. You can invest, learn, and save all with one app.

After you answer some questions about your goals, risk tolerance, and interests, the app will give you investment recommendations. Stash will help you build a personalized, diversified portfolio based on your financial goals. This provides guidance, while offering more control than straight up robo-advisors.

There's no investing minimums in order to start investing with Stash.

Top Features:

  • Users can invest in individual stocks and ETFs and/or choose from themes based on your interests.

  • 3 ways to auto-invest: scheduled transfers, invest spare change from linked bank cards, or Stash will analyze your financial patterns to automatically transfer funds for you.

  • Helpful educational articles and videos for beginners.

Stash has a $1 monthly charge. A retirement account costs $2 per month. There are no trade fees.

A dollar every month (or $12 per year) might seem low but it's high compared to competitors. If the user only have $10 in the account, $1 is 10%. But beginner investors may find the guidance worth it.

Other platforms typically charge a percentage of an account's total balance per year. For example, if a robo-advisor charges a 0.25% annual fee, you'll only pay $2.5 per year per $1,000 balance.

Works on: iPhone, Android


Sign Up and Get $5

  • Sign up, add at least $5 to your account and get a $5 bonus.
  • Invest with fractional shares
  • Get portfolio recommendations

Robinhood for Investing in Stocks and Cryptocurrency

Robinhood offers stocks, ETFs, options, and cryptocurrency trades completely 100% commission-free. There is no minimum investment.

The Robinhood mobile app has very high ratings, but it's a totally no-frills app. You won't get stock market research or guidance. It also doesn't offer any retirement account options. It's best for investors who are already comfortable trading on their own.

Top Features:

  • Free extended trading hours from 9:00 am to 6:00 pm ET.

  • Perform up to 3 day trades in a five-trading day period.

  • Get real-time news and updates on stocks in your watch list.

The Robinhood app is completely free and requires no minimum balance to get started.

An optional Robinhood Gold account is available for $5 per month for investors with a $2,000 account minimum. This premium account gives traders increased buying power when trading on margin, larger instant deposits, and Morningstar research.

By far the best investment app is Robinhood. First, the user interface (UI) is beautiful and intuitive. You might not think this matters with investing, but it absolutely does when you're trading at scale. Second, it's cheap. The whole point is to be able to make commission-free trades on a free app. Finally, it has the requisite legal backing. Robinhood is a member of the SDIC and so your money is safe up to $500,000.
Dary Merckens, CTO, Gunner Technology

Works on: iPhone, Android

M1 Finance: Best Hybrid Robo and DIY

A hybrid robo-advisor and DIY broker, M1 Finance bridges the gap for investors who want to choose their own investments, but don't want to manage their portfolio.

You can select your own investments and M1 Finance will take care of the trading and portfolio management for you (such as automatic portfolio rebalancing). Alternatively, you can choose one of many pre-made portfolios and make adjustments.

The minimum to start investing is $100.

Top Features:

  • Allows you to pick individual stocks and ETFs for fully customized portfolios (called "Pies"). Create and modify your Pies as often as you want.

  • Set up one-time or scheduled automated deposits. M1 will purchase stocks for you according to your Pies.

  • Supports fractional shares.

Investors with a balance of at least $10,000 can access a portfolio line of credit. Borrow up to 35% of your portfolio at a low interest rate, with no paperwork or credit check. You can get access to funds fast without selling off your investment portfolio or taking out other loans.

The standard M1 Finance app is completely free after a $100 account minimum ($500 for an IRA). There are no trading fees.

M1 Plus - the premium account - costs $125 per year. This includes more investing options plus an interest banking account with a tungsten metal card.

Works on: iPhone, Android

M1 Finance

New Customers: Deposit $1,000 and Get $30

Expires 12/31/2021
  • Open a new M1 account.
  • Deposit $1,000 or more in your Invest account during your first 14 days.
  • Get a $30 bonus.

Acorns for Investing Spare Change

Screenshot of Acorns

Acorns is a "spare change" robo-advisor. You link your credit and debit cards and Acorns will automatically round up the change from your purchases and invest them. There is no minimum to start. The app automatically invests when your balance reaches $5.

The Acorns app is an easy way for young investors to get started. It allows you to save money without thinking while investing your savings at the same time (instead of it just sitting in a bank).

Top Features:

  • Customize your own round up rules.

  • Save for later in life with an optional IRA account.


  • $3/mo for Acorns Personal (includes personal taxable account, IRA, and checking account)
  • $5/mo for Acorns Family (includes everything in Personal plus investment accounts for kids)

$3 dollar per month is higher than many other robo investment apps if you have a smaller balance (under $15,000). Acorns fee may be worth it if you like the convenience of automated investing.

Works on: iPhone, Android

Betterment: Best Auto Investing App

Betterment is one of the first robo-advisors. It automatically invests your money into diversified portfolios of ETFs based on your financial goals and risk tolerance. You cannot choose your own stocks or ETFs.

You can set up multiple portfolios, such as for an emergency fund, large purchases, and IRA accounts. Different goals will have different investment strategies.

Betterment has no minimum to start.

Top Features:

  • Tax loss harvesting and automatic portfolio rebalancing.

  • "Smart deposit" feature automatically invests extra money from linked bank accounts.

  • Retirement calculators tell you if you're on track to your retirement goals.

Betterment costs 0.25% of your assets under management. For every $100 in your account, the fee is only 25 cents per year. There are no additional trade fees.

For investors with at least $100,000, you have the option to upgrade to the Premium plan at a 0.40% annual fee. This includes access to finance professionals for personal advice.

Works on: iPhone, Android


Get up to 1 Year Managed Free

New Betterment customers only. Accounts must be funded within 45 days of signup. Terms apply.

Fidelity for Mutual Funds and Index Funds

Fidelity is one of the largest, oldest investment companies. It offers a very highly rated iPhone and Android app that allows the user to monitor your investment portfolio from anywhere.

Fidelity offers a number of no-minimum investment mutual funds. Not only that, but a lot even have 0% expense ratio. Besides Fidelity funds, it also offers over 10,000 funds from other companies.

Fidelity is a full-service investment firm, so it's a great choice for investors looking for a long-term brokerage to grow with them. Both beginners and more experienced investors can learn from its excellent educational resources.

Fidelity has an Apple app store rating of 4.7 stars with 1 million reviews, and Google Play store rating of 4.5 stars with over 53,000 reviews.

Top Features:

  • Daily customized news feeds, including portfolio, stock market, and company research information.

  • Strong focus on retirement education, including retirement calculators and other tools.

  • See real-time quotes and charts, live Bloomberg streaming videos, and stock market research reports, such as Zack's Bull & Bear of the Day.

  • View your watch list in grid view or as a heat map.

  • Syncs with your Apple Watch and Google Assistant so you can get real-time market quotes, market movers, and alerts on your wrist.

The Fidelity app is free and requires no minimums to open. $0 commissions for U.S. stocks, ETFs, and options (+ $0.65 per contract fee).

Fidelity also offers a free Cash Management banking account with mobile deposit, bill pay, checkwriting, and unlimited domestic ATM reimbursements.

Can stocks protects against inflation? Nope, stocks are not a good hedge for inflation. Try TIPS (Treasury Inflation Protection Securities) instead.

Olivia S. Mitchell, Professor of Business Economics and Public Policy, Wharton School

Works on: iPhone, Android

TradeStation: Best App for Day Trading

TradeStation is best known for their advanced investment tools previously only available to brokers. It's best for investors with more experience.

The platform is primarily desktop-based, but also has a streamlined mobile app. You can trade stocks, ETFs, and options commission free (up to 10,000 shares).

Top Features:

  • Real-time streaming quotes.

  • Customize your own options spread strategy or see popular strategies.

  • Add commonly used technical studies to your charts and customize their parameters.

You don't need a fat bank account to start investing in stocks. Check out How to Invest in Stocks with Little Money.

Users can choose between two accounts. TradeStation Go has $0 minimum ($0.50 per contract for options). A more premium account, TradeStation Select, has $2,000 minimum ($0.60 per contract for options). It includes the TradeStation 10 Desktop and additional tools.

More advanced plans include a per-share plan or unbundled plan for high-volume traders. These plans have some fees.

Some find their phone screen too small to properly read the charting on the Tradestation app. If you use tablet, you may have an easier time viewing digital charts.

Works on: iPhone, Android


Invest and Earn Up to $5,000

Enroll your new or existing TradeStation account in this offer using promo code CASHAFRV on your new account application, requesting to enroll, via telephone, with a TradeStation Representative or by completing the enrollment form. Within 45 days of account enrollment, fund your account with at least $5,000. Maintain at least $5,000 in your account for 270 calendar days. New assets will be aggregated during the 45-calendar day period following the enrollment date to determine the amount of your cash offer.

New AssetsCash Bonus
$5,000 - $24,999$50
$25,000 – $99,999$200
$100,000 – $199,999$300
$200,000 – $499,999$600
$500,000 – $999,999$1,200
$1,000,000 – 1,999,999$2,500
$2,000,000 – 4,999,999$3,500

TD Ameritrade: Best Research and Tools

TD Ameritrade is another huge investment company. It's known for its superior platforms and customer service.

The company has 2 mobile apps: TD Ameritrade Mobile and thinkorswim (Mobile Trader) app. If you're looking for a full-service brokerage, it's a close call between this and Fidelity.

The standard TD Ameritrade mobile app is better for beginners because of their user-friendly interface. You can trade stocks, ETFs and other options in an intuitive way.

But for advanced traders, the thinkorswim mobile app offers a more advanced trading platform. You'll get access to multi-leg options, stocks, futures and 24/5 trading. You can also create customizable multi-touch charts and screen share with trade specialists for instant help.

Top Thinkorswim Features:

  • Trade stocks, complex options, futures, and forex.

  • 300+ technical charts and indicators. Overlay company and economic events to see past, present, and future performance.

  • See the potential profitability and risk of your investments and stress test your entire portfolio.

  • Virtual paper money account to practice your strategies before investing real money.

  • Chat and screen-share with a financial specialist within the app.

Both Ameritrade apps are free and require no minimums. Commission-free stocks, ETFs, and options (+ $0.65 per contract fee).

Works on: iPhone, Android

TD Ameritrade

Commission-Free Trading - Online Stock, ETF and Option Trades

Applies to U.S. exchange-listed stocks, ETFs, and options. A $0.65 per contract fee applies for options trades, with no exercise or assignment fees.

Stockpile: Best App for Gifting Stocks

Stockpile is the only investing app that allows you to buy and give stock gift cards. It's also a brokerage where you can place trades, though it has very limited products and services.

Stockpile is a great app to give kids and teens a head start in investing. And you don't need an account to send a gift. Instead of giving them toys or shopping gift cards, parents and relatives can give the gift of stocks. This is a more substantial gift that will help their futures and keep on giving.

Top Features:

  • Can gift fractional shares of 1,000+ stocks & ETFs, starting from $1.

  • Can open custodial account for your kids.

  • Can buy either e-gift or physical gift cards. Gift cards never expire.

Stockpile charges $0.99 per trade to buy and sell. E-gift cards cost $2.99 for the first stock and 99¢ for each additional stock, plus a 3% debit or credit card fee. Physical gift cards are $4.95 to $7.95 depending on the face value.

There is no minimum balance requirement or monthly account fees.

Works on: iPhone, Android

Wealthfront: Best App to Save for College

Wealthfront is another popular robo-advisor for the hands-off investor. It offers traditional investing accounts and options for specific financial goals, like 529 College Savings accounts.

The app will automatically invest and manage your portfolio of stocks and ETFs. Wealthfront does not allow users to choose their own individual investments. You can open multiple portfolios for different purposes. The minimum is $500.

Top Features:

  • Automatic portfolio rebalancing.

  • More diversified portfolio including real estate and natural resources.

  • Advanced personal finance tools for life events, such as calculators for college, retirement, homeownership, and travel.

  • Advanced tax strategies for portfolios with $100,000.

A portfolio line of credit is available to investors with a $25,000 balance. Borrow up to 30% of your portfolio's value at rates lower than typical personal loans.

Wealthfront requires a $500 minimum balance. The app charges an annual fee of 0.25% of your assets under management.

Wealthfront also offers a free, high-yield savings account. You don't need to be a Wealthfront robo-advisor user to open the savings account.

Works on: iPhone, Android

Webull: Best for Free Investing

On Webull, you can trade stocks, options and ETFs for free. In addition, they offer no-fee trades on cryptocurrencies, including Bitcoin, Ethereum and Litecoin 24/7.

You'll also get full extended-hours trading. This broker lets you set up an IRA account (traditional, Roth or rollover). However, you cannot trade bonds or mutual bunds off of Webull.

Overall, the platform is best for investor with some trading experience. The app can be overwhelming for beginners.

Top features:

  • $0 minimum balance

  • Invest in stocks, ETFs, options and crypto

  • Set up a individual brokerage account and/or IRA

  • Full extended trading hours, includes full pre-market (4:00 AM - 9:30 AM ET) and after hours (4:00 PM - 8:00 PM ET) sessions

  • In-depth tools analysis

  • Free access to Webull desktop app


  • No commission-fees for stock, ETF, options or crypto trades

  • $8 to $45 fees for wire transfers

Works on: iPhone, Android


Webull: Get Started

SoFi Invest: Choose How You Want to Invest

SoFi Invest offers both DIY and robo investing. You can choose how you want to invest.

You can invest yourself and trade stocks and ETFs with no trading fees, starting from just $1. Crypto trades have a 1.25% fee and have a minimum of $10 per purchase.

Or you can have SoFi automated investing service build a portfolio and manage it for you. The best part about that is that there is no management fee for this service. You only need $1 to start as well.

The SoFi app is all-inclusive. All from one app, you can access all of Sofi's products, including SoFi Money (the checking and savings account), Invest, and loans.

As a SoFi member, you get benefits on their other services too, like loan discount rates and career advice. You even get one-on-one access to financial professionals for free.

No trade fees for stocks and ETFs. No management fee for robo-service.

Works on: iPhone, Android

Full-Service Brokerages Apps

Here are some of the best options for those looking for a more traditional investment company.

These apps may not be as sleek as the newer apps targeted towards Millennials, but these companies have solid reputations.

Vanguard is one of the most well-known mutual fund companies. It has over 130 of its own mutual funds. For most Vanguard's actively managed funds, the minimum investment is $3,000 ($1,000 for $1,000 for Vanguard Target Retirement Funds).

Charles Schwab:
Charles Schwab offers commission-free stocks and ETF trades. You can even buy fractional shares of the S&P 500 companies for as little as $5.

Another outstanding feature is the Schwab Intelligent Portfolios robo-advisory service. It charges no management fees, but the minimum investment is $5,000.

Merrill Edge:
Merrill Edge is a great choice for Bank of America users. It also offer a robo-advisory service with portfolios built and managed by their professionals.

One advantage is that your investment balance can qualify you for BofA Preferred Rewards, which reduces the advisory fee (along with other banking and loan benefits).

The apps in this article are all legitimate platforms for investing. However, it's always smart to research an investment before you put money on the line. The FTC recommends investigating the company and it's history before investing.[2]

What the Experts Say

As part of our series on investments and saving, CreditDonkey asked a panel of industry experts to answer some of our readers' most pressing questions. Here's what they had to say:

Reasons to Use Investment Apps

  • Convenience: With an investment app, the user can buy and sell, add more funds, or withdraw funds right from their phone.

  • Saving money: Many investment apps have no commissions on stock trades. DIY investors can save a lot on fees.

  • Smaller upfront investments: Many investing apps have no account minimum. This makes investing easy for people who don't have a lot of money to start.

Bottom Line

Investment apps are meant to make life easier. Each investor has different needs, so know yours before choosing an investment app. Take the time to research fees and features and read reviews, then begin investing responsibly.


Jeremy Harshman is a protector of art and writing at CreditDonkey, a personal finance comparison and reviews website. Write to Jeremy Harshman at jeremy.harshman@creditdonkey.com. Follow us on Twitter and Facebook for our latest posts.

Note: This website is made possible through financial relationships with some of the products and services mentioned on this site. We may receive compensation if you shop through links in our content. You do not have to use our links, but you help support CreditDonkey if you do.

TD Ameritrade has not influenced the content of CreditDonkey. CreditDonkey may earn compensation for accounts opened at TD Ameritrade.

Paid non-client endorsement. See Apple App Store and Google Play reviews. View important disclosures. Investment advisory services offered by Stash Investments LLC, an SEC-registered investment adviser. This material has been distributed for informational and educational purposes only, and is not intended as investment, legal, accounting, or tax advice. Investing involves risk.

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New Betterment customers only. Accounts must be funded within 45 days of signup. Terms apply.

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