Before you compare apps, one thing decides whether an app is any use for penny stocks at all: whether it lets you trade over the counter.
Most penny stocks do not trade on the Nasdaq or the NYSE. They trade OTC, on the pink sheets and the OTC markets. An app that only handles exchange-listed shares will show you a fraction of what you are looking for, and that is where most people pick the wrong one.
Check this first. Robinhood does not support OTC trading. It handles securities listed on national exchanges, and stocks that get delisted become position-close-only. If the penny stocks you want are OTC, Robinhood cannot trade them, no matter how good the app is otherwise.
The best penny stock trading apps
1. Interactive Brokers
Interactive Brokers is the platform experienced traders use for this, because its market access is far broader than the app-first brokers and it reaches corners of the market they do not. The trade-off is the interface, which is built for professionals and will feel cold if you are starting out.
Pick it if you already know which stocks you want and need to actually reach them. Skip it if you want something friendly to learn on.
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2. Webull
Webull sits between Robinhood and a professional platform. The charting is genuinely good for a free app, with the technical indicators that matter if you are trading on price action rather than fundamentals, and the paper trading account lets you test an approach before risking anything.
Pick it if you want real charting without paying for it. Skip it if your list is mostly OTC names, and confirm coverage for the specific tickers you want first.
3. TradeStation
TradeStation is built for people who trade often enough that execution quality and order types matter more than a pretty interface. The desktop platform is powerful and the strategy testing is a genuine differentiator if you are systematic about entries and exits.
Pick it if you are trading frequently and want control over how orders are routed. Skip it if you place a few trades a month, because you will not use most of what you are paying for.
4. Moomoo
Moomoo gives away a level of market data that most brokers charge for, including depth of book and detailed analytics. On thinly traded shares, seeing the order book matters more than it does on large caps, because a small order can move the price and you want to know what is sitting there before you send it.
Pick it if you want institutional-style data without a subscription. Skip it if you find dense interfaces off-putting.
5. Public
Public is the friendliest option here and the least intimidating to learn on. It is the weakest for hardcore penny stock trading, but if you are early on and want to buy small positions while you learn how any of this works, it will not overwhelm you.
Pick it if you are new and want to start small. Skip it if you need deep OTC coverage.
6. Robinhood
Robinhood is the app most people already have, and it is genuinely the easiest to use. For penny stocks specifically it has one disqualifying limitation: no OTC trading. That still leaves the sub-$5 stocks listed on the Nasdaq and the NYSE, which is a real universe, just a much smaller one than the term normally implies.
Pick it if the cheap stocks you want are exchange-listed. Skip it if you are shopping the pink sheets, because it cannot take you there.
What actually matters when choosing
OTC access. The first filter, and the one most comparisons skip. Check that your broker reaches the specific tickers you want before you fund the account, not after.
The real cost of a trade. Commission-free is not free on thinly traded stocks. The spread between the bid and the ask is the cost, and on an illiquid share it can be several percent of your position before anything moves.
Order types. Use limit orders. A market order on a stock that trades a few thousand shares a day can fill far from where you expected, and this is the single most common way people lose money on the mechanics rather than the pick.
Data quality. Depth of book matters more here than on large caps, because you need to see whether there is anything on the other side of your trade.
Be honest about the risk
Penny stocks are volatile, often thinly traded, and the companies behind them frequently disclose far less than exchange-listed businesses. Low liquidity means you may not be able to sell when you want to at the price you want, and pump-and-dump schemes are common enough in this corner of the market that the SEC maintains standing warnings about them.
None of that means do not trade them. It means size positions so a total loss on any one of them does not matter, and treat anything promoted to you in a message or a video as marketing rather than research.
Frequently asked questions
Only if they are listed on a national exchange. Robinhood does not support OTC trading, which is where most penny stocks trade, and delisted stocks become position-close-only. For OTC access you need a broker that routes those orders, such as Interactive Brokers.
Very little. Most of these brokers have no account minimum and several offer fractional shares, so Webull or Public will let you open an account and fund it with whatever you want. The more useful question is how much you can lose entirely without it affecting your life, because that is the amount to trade with.
They are speculation rather than investment. Some people trade them profitably, most do not, and the ones who do treat position sizing and exits as the whole job. If you are looking for something to hold for years, this is the wrong asset class.
Exchange-listed shares trade on the Nasdaq or the NYSE and meet those exchanges listing and reporting requirements. OTC shares trade through dealer networks with lighter disclosure obligations, which is why the information available to you is often thinner and the spreads wider. To trade OTC names you need a broker that reaches them, such as Interactive Brokers or TradeStation.
Where to go next
If you are early on and want the broader picture first, start with how to start investing with little money. For alternatives to the app you already have, see our best Robinhood alternatives comparison.
