TradingSim is the best dedicated day trading simulator: a full market replay engine that rewinds entire sessions, Level 2 and all. TradingView’s Bar Replay is the value pick at a fraction of the price, and thinkorswim OnDemand is the best free option if you’re willing to open a Schwab account. This page covers replay simulators and trading games specifically; it’s one slice of our full day trading app rankings, and broker paper-trading modes get their own comparison in our paper trading apps roundup. Every pick below was evaluated against the criteria in how we rate, with pricing and features verified against each platform’s official pages in June 2026.
Quick comparison
| Simulator | Best for | Type | Markets | Price | Free option |
|---|---|---|---|---|---|
| TradingSim | Full-session market replay | Replay | US stocks, futures, crypto | $79–$89/mo ($396–$449/yr) | Free trial |
| TradingView Bar Replay | Replay inside your charting platform | Replay | Stocks, futures, forex, crypto | From $12.95/mo billed annually | Daily-timeframe replay on the free plan |
| thinkorswim OnDemand | Free full-platform replay | Replay | Stocks, options | Free with a Schwab account | Yes |
| NinjaTrader Playback | Futures replay and sim | Replay + live sim | Futures | Free platform | Yes |
| TradeZella | Replaying your own executed trades | Trade replay + backtesting | Stocks, options, futures, forex | $29–$49/mo ($288–$399/yr) | No |
Replay, live sim, or game: pick the right type first
A live paper-trading account gives you one market open per day, at 9:30, on the market’s schedule. A replay simulator gives you any open you want, whenever you want, at whatever speed you want. That difference compounds fast.
Run the math on 50 practice opens. Trading the first hour live in a paper account takes 50 hours of screen time spread across 10 calendar weeks, all of them between 9:30 and 10:30 Eastern. Replaying those same 50 first hours at 10x speed takes 5 hours total, and you can do it on a Tuesday night. NinjaTrader’s Playback runs recorded tick data at up to 1,000x; TradingSim’s replay engine runs around the clock. If your job is building pattern recognition on gappers, halts, and the open, replay is the only format that lets you compress months of reps into weeks.
Live paper trading still matters for one thing replay can’t fake: order entry against a market that doesn’t know your future. That’s the sibling category, covered in the paper trading comparison linked above. Trading games (covered at the bottom) are a third thing entirely: fine for learning what a limit order is, not for day trading reps. The rest of our best-of rankings split along the same use-case lines.
1. TradingSim: best for full-session market replay
TradingSim replays the whole market, not just one chart. A session-based replay engine keeps multiple symbols, timeframes, Level 2, time and sales, and a market scanner synchronized to the same moment in time, and it covers premarket and post-market data, which is where most momentum setups are born. You get over 10,000 US equities across Nasdaq, NYSE, and AMEX, plus futures (including micros) and crypto. Execution tools are built for day traders: hotkeys, on-chart trading, and bracket orders with stop and target set on entry. Bookmarks let you save a halt or a breakout and drill it repeatedly, and the analytics track P&L and win rate across your replay sessions.
Pricing: Pro is $79 a month or $396 a year; Premium is $89 a month or $449 a year and adds five years of market history (versus two), tick and second charts, Level 2 replay, and live sessions on a 15-minute delay, per the tradingsim.com pricing section. Annual billing is the obvious move here: paying Premium monthly costs $1,068 a year against $449 billed annually, a $619 gap.
The drawback is the price itself. Free replay exists (picks 3 and 4 below), so the $396–$449 a year only earns its keep if you’re replaying sessions several times a week and you need the scanner, Level 2, and tape running in sync. Full breakdown in our TradingSim review.
2. TradingView Bar Replay: best value replay inside a charting platform
Bar Replay lives inside the charts you’d probably use anyway. Pick any bar in history, press play, and the chart rebuilds forward at your chosen speed, with manual step-forward, hotkeys, multi-chart synchronized replay across timeframes, and sessions that resume where you left off. The data runs deep: minute bars reach back 20+ years on some symbols (AAPL one-minute data starts in January 2000), and a one-second update interval is available for intraday replay, per the TradingView help center.
Plan gating is where to pay attention. The tradingview.com pricing page lists daily-and-higher replay data on every plan including the free one, while minute-level replay data starts at Essential ($12.95 a month billed annually) with 180 days, extends to 365 days on Plus ($29.95), and opens fully on Premium ($59.95). Trading inside Bar Replay is listed as its own plan feature. On billing, the posted policy is a 14-day refund window on annual plans and no refunds on monthly plans, so set a renewal reminder when you take the annual discount.
The drawback: second-based replay data only exists from August 2022 onward, and several chart types (Renko, tick-based charts, volume footprint, and others) don’t work in replay at all. More in our TradingView review.
3. thinkorswim OnDemand: best free replay, account required
OnDemand turns the thinkorswim desktop platform into a time machine. Pick a past date and the entire platform rolls back: charts rebuild tick by tick, option chains backdate to the correct expirations and strikes, and you trade a $100,000 practice balance against data as it actually printed. You can fast-forward minutes, days, or weeks, pause, jump dates, and reset the account, and it runs 24/7 including nights and weekends. Schwab’s own OnDemand walkthrough from December 2025 demonstrates replaying sessions from two years back and notes the feature sits on the live desktop platform rather than inside paperMoney mode. Fundamental data is offline during replay; quotes and options data are not.
The price is right: thinkorswim is free to Schwab clients, and per the Guest Pass page accounts carry no minimums and no maintenance fees. paperMoney, the separate live-data simulator, is also free, and non-clients can run it for 30 days on a Guest Pass.
The drawback follows from the setup: you need a funded relationship with a full brokerage to use a practice tool, and OnDemand’s historical options replay rewards traders who already know the platform. thinkorswim’s learning curve is its own topic, covered in our thinkorswim review.
4. NinjaTrader Playback: best free simulator for futures
NinjaTrader gives futures traders a serious replay tool for nothing. The platform and simulator are free to download and use, with no deposit required to open an account, and the Playback Connection replays recorded historical tick data at up to 1,000x speed, going back 90 days, per the ninjatrader.com simulator page. Alongside replay you get a live-data sim (live streaming market data is free for the first 14 days, then it’s delayed data, a paid feed, or a funded account), a simulated data feed you can steer manually to stress-test ideas, and a no-code Strategy Builder with a backtesting engine that runs strategies against historical tick data.
Worth quoting directly: NinjaTrader’s own disclaimer states that simulated results can differ significantly from live trading due to liquidity, execution, and the psychological impact of risking real money. That’s the honest frame every simulator on this page deserves.
The drawback is the 90-day replay archive. TradingSim holds two to five years and TradingView’s minute data goes back decades, so if you want to replay last spring’s CPI session, 90 days won’t reach it. And the whole product is built around futures; equity day traders should look at picks 1–3.
5. TradeZella: best for replaying your own trades
Everything above replays the market. TradeZella replays you. Trade Replay pulls any executed trade from your journal and plays it back against real tick data, with your entries and exits marked on the chart, adjustable speed, multi-timeframe context, and jump-to-execution controls. Day Replay (on the higher tier) runs your full session start to finish, which is how you find out what the morning’s first loss did to your afternoon decisions. You can tag mistakes, journal, and screenshot inside the replay, and everything feeds your reports. A separate backtesting module handles forward practice on historical data with seconds-level data, speed control, and up to eight charts per session.
Pricing per tradezella.com: $29 a month (Basic) or $49 (Premium) billed monthly; annually it’s $288 a year (Essential) or $399 (Pro), with the higher tier carrying the full-session replay.
The drawback is definitional: Trade Replay works with trades synced from your connected broker, so the replay has nothing to show until you’ve actually traded. It’s a review layer on top of live trading, not a substitute for the market-replay practice in picks 1–4. Details in our TradeZella review.
Free games and virtual portfolios
Two free options sit in the game category. The Investopedia Simulator offers over 6,000 NYSE and Nasdaq equities in a virtual portfolio format, and Wall Street Survivor runs a $100,000 practice account with real market data and competitive games. Both are fine for a first encounter with order types and for classroom-style contests. Neither is built around session replay, fast execution, or the open, which is where day trading is actually won and lost. Treat them as step zero, not as training.
How we picked
Replay capability carried the most weight, because replay is what separates this category from ordinary paper trading: session depth, data granularity (tick, second, minute), Level 2 and time and sales where offered, and how much history the archive holds. Execution realism came second: hotkeys, bracket orders, and fills simulated against recorded data rather than a static chart. Then cost against the free alternatives; a paid simulator has to beat free broker replay by enough to justify the subscription for its intended user. Every capability claim above was verified against the platform’s own pricing pages, feature pages, or help documentation in June 2026, and the drawbacks are derived from those same documents.
Who should skip these
Long-term investors don’t need any of this; a plain broker paper account covers buy-and-hold practice. Traders who already hold an account at a broker with a strong built-in sim should start with what they’re already paying for, then add a dedicated replay tool only if the built-in version runs out of road. And nobody should treat simulator P&L as proof of edge. Fills come easier and emotions run quieter when nothing is at stake, NinjaTrader’s own disclaimer says as much, and most day traders lose money even after practicing. The sim’s job is to make your mistakes cheap, and the review habit is what converts them into lessons; log every sim session in a trading journal the same way you would real trades.
FAQ
Are day trading simulators realistic?
Realistic enough to build skills, not realistic enough to prove profitability. Replay tools use recorded market data, so the price action is real, but simulated fills don’t fight you the way live ones do, and no simulator recreates the pressure of real losses. NinjaTrader’s own disclaimer states that simulated results can differ significantly from live trading because of liquidity, execution, and psychology. Use a simulator to build process; use small live size to test it.
What is the difference between a simulator and paper trading?
Paper trading runs a virtual account against the live market in real time, so you practice on today’s session only. A replay simulator plays back recorded historical sessions on demand, at adjustable speed, so you can practice any session, any time, and repeat the same setup until you recognize it instantly. Most serious practice plans use both: replay for volume of reps, live paper for real-time decision making.
What is the best free day trading simulator?
thinkorswim OnDemand, if you’re willing to open a Schwab account: full-platform replay of past sessions with stock and options data at no cost. For futures, NinjaTrader’s free platform includes the Playback replay (90 days of tick data) plus a live-data sim. TradingView’s free plan replays daily timeframes, though minute-level replay requires a paid tier.
How long should you practice in a simulator before trading live?
There’s no magic hour count. A more honest gate is consistency: a defined setup, written rules, and a stretch of sim sessions where you followed those rules and the results were stable, ideally several dozen trades, not several. When you go live, start at a fraction of your intended size, because the variable the sim never tested is you with money on the line.
Can you replay premarket sessions?
TradingSim replays premarket and post-market data explicitly, which matters because gappers set up before the bell. Coverage of extended hours varies by platform and plan elsewhere, so if premarket replay is the point, confirm it on the official feature pages before paying.