What TradingSim Is and Who It’s For
TradingSim is a market replay simulator that runs entirely in the browser, with no software to download and no separate data subscription to buy. It is built around one idea: replay real historical market sessions with charts, scanner, time and sales, and Level 2 all moving on a single synchronized clock, so days of screen time collapse into a few focused hours. The product is a practice environment, not a live broker and not a real-time charting platform, and that distinction decides whether it belongs in a trader’s toolkit.
Two groups get the most out of it. New traders use it to learn order mechanics and test whether trading suits them before any capital is at risk. Active traders use it differently, replaying their own sessions to dissect mistakes, studying how a specific stock behaves before committing real money to it, or grinding through a no-risk session to climb out of a slump instead of overtrading a live account.
The company behind it leans on that second case hard. TradingSim was built by two traders who went full-time in 2007 and wanted a place to practice after the closing bell, when live data stops flowing through a brokerage platform. The result is a tool aimed squarely at repetition. See the same setup enough times, in conditions close enough to live, and the pattern starts to register.
The Replay Engine
The replay engine is the actual product, and it is more capable than the single-chart playback most simulators offer. A full session can be replayed with multiple symbols, Level 2, scanners, and time and sales synchronized together, rather than one ticker in isolation. That matters because real trading decisions are rarely made off a single chart. A trader watching a small-cap break out wants the scanner, the tape, and a second timeframe moving in lockstep, and the synchronized replay delivers exactly that.
Extended hours are included. Pre-market and post-market data can be replayed, which is where a large share of momentum setups actually form. Multi-symbol, multi-timeframe views run one stock on a 5-minute chart next to another on a 15-minute chart, both pinned to the same replay time.
Control over playback is granular. There are 7 fast-forward speeds, a jump-to-time function, single-step movement forward or backward, and a simple pause. A trader can slow down to study the open tick by tick, then fast-forward through a quiet midday stretch without sitting through every print.
Markets and Instruments Covered
Coverage spans three asset classes, wider than most replay tools attempt.
Equities run to more than 10,000 symbols across Nasdaq, NYSE, and AMEX, covering small, mid, and large caps, plus over 1,000 ETFs. Futures include mini and micro contracts across indices, commodities, currencies, and interest rates, with the contracts active traders actually use: S&P e-minis, Nasdaq 100, gold, crude oil, and 10-year treasury notes. Crypto coverage runs to Bitcoin, Ethereum, BNB, XRP, Cardano, Solana, Dogecoin, Polkadot, Litecoin, and Avalanche.
The practical effect is range without leaving the platform. A trader can rehearse a gap and go on a small-float stock in the morning and study an e-mini futures session in the afternoon, all on the same data.
Trade Execution and Order Types
Execution tools are built for speed, the right priority for a simulator meant to mirror live conditions. Hotkeys can be customized so an order goes out with a single keystroke, which is the difference between catching a fast move and missing it. An advanced trade ticket sets price, size, stop loss, and take profit in one place, and orders can be placed and adjusted directly on the chart.
The order-type list is deeper than a basic simulator bothers with. Market, limit, and stop orders are all present, along with bracket (OCO) orders and OTO (Order Triggers Order), so a position can be entered with a profit target and a stop attached in the same action.
One detail separates this from a toy. Fills are driven by the historical Level 1 order data, not granted on request. An order does not execute simply because a trader wanted it to. It fills against the bids and asks that actually existed at that moment, so the practice carries the friction of real liquidity rather than a frictionless fantasy.
Level 2, Time and Sales, and the Scanner
For traders who read order flow, this is the section that matters most, and it comes with a catch worth understanding before paying.
Level 2 replay shows historical market depth and liquidity, with key levels marked, including intraday and pre-market highs and lows and Limit Up/Limit Down levels. It layers in VWAP, ATR, and RVOL, and the color palette can be adjusted to make the book easier to read. Time and Sales sits alongside it, showing every executed trade and flagging block trades and dark pool activity, so a trader can see where the size actually printed.
The scanner surfaces setups on the metrics momentum traders care about: pre-market volume, float and market cap, pre-market gap percentage, and short interest, among others. Watchlists can be built from index universes such as the Dow 30, the S&P 100 through 600, the Nasdaq 100 and Composite, and the Russell 2000, with no cap on how many lists a trader saves.
Level 2 Is Premium-Only
Here is the catch. Level 2 is not included on the Pro plan. A trader whose entire method depends on reading the depth of book and watching for absorption at a level will find the scanner and time and sales on Pro, but not the order book itself. For tape readers, the cheaper plan is effectively incomplete.
Charting, Workspaces, Bookmarks, and Analytics
The charting is fuller than a practice tool strictly needs. There are over 50 technical indicators with configurable periods and appearance, and over 60 drawing and visual analysis tools, including the full Fibonacci suite, Gann boxes and fans, several Pitchfork variants, Elliott impulse waves, and ABCD patterns. Layouts hold 1 to 4 chart windows at multiple timeframes, the account balance can be changed on the fly to rehearse position sizing at different equity levels, and the background flips between light and dark.
Workspaces save the whole arrangement. A trader can build one layout for small-cap momentum and another for futures, then switch between them in a click rather than rebuilding the screen each session.
The bookmark and analytics pairing is the genuinely distinctive part. Bookmarks mark an exact moment in a replay, a breakout or a failed pullback, and jump straight back to it later, building a categorized library of setups organized by pattern or market condition. The analytics then track P&L, win/loss ratios, trade efficiency, and progress over time. Together they form a real feedback loop: mark the moment, replay it, log the result, and watch whether the numbers move. Most simulators stop at execution. This one is built to turn practice into a study record.
Pricing
Pricing is clean and all-in, with data fees folded into the subscription rather than billed separately by a third-party provider. That one detail removes the recurring data charge that bolts onto many trading platforms.
| Plan | Monthly | Annual (billed yearly) | Free Trial |
|---|---|---|---|
| Pro | $79/month | $396/year (about $33/month), save 60% | 7 days |
| Premium | $89/month | $449/year (about $37/month), save 60% | 7 days |
The free trial runs 7 days. Paying annually drops the effective monthly cost to roughly $33 on Pro and $37 on Premium.
The choice between the two tiers comes down to three things. Premium adds Level 2 data, extends history from 2 years to 5, includes tick and second charts for finer analysis, and adds a “Delayed Live” mode. Pro covers replay, simulated trading, the scanner, time and sales, hotkeys, analytics, and custom workspaces. A trader practicing mostly off charts and the scanner can live on Pro. Anyone trading off the tape should plan on Premium from the start.
Rules and Restrictions That Affect the Decision
A few mechanics change what the product is worth depending on the trader, and each deserves attention before subscribing.
History depth is tier-gated. Pro provides 2 years of historical data, Premium provides 5. For a trader who wants to study a single stock’s behavior across different market regimes, 2 years can run short, and the only fix is the higher tier.
The “Delayed Live” feature is exactly that, delayed. It lets a Premium subscriber trade live market sessions on a 15-minute delay. The mode is useful for practicing on current price action, but it is not real-time and it is not a live brokerage account. A trader should treat it as advanced practice, not as a bridge to live execution.
The broader limit is structural. TradingSim is a simulator end to end, with no real capital and no live order routing. That is the entire point, and the Level 1-driven fills keep the practice honest, but it builds pattern recognition and discipline rather than the experience of a real fill in a real account. The jump to live trading still has to be made somewhere else.
Bottom Line
TradingSim does one thing and does it with unusual depth. It replays real markets in conditions close enough to live that deliberate, repeated practice actually sticks. The synchronized full-session replay, the bundled data, and the bookmark-plus-analytics study loop are what separate it from simpler playback tools. Pro suits traders building reps off charts and the scanner. Premium is the pick for anyone who reads Level 2 or needs more than 2 years of history. Traders expecting live data or real execution should look elsewhere, because that was never the design.
Pros
- Data fees are bundled into one subscription price, removing the separate monthly third-party data charge common elsewhere.
- Full-session replay synchronizes charts, scanner, time and sales, and Level 2 on a single clock, instead of replaying one chart in isolation.
- Over 50 technical indicators and over 60 drawing tools cover serious chart analysis.
- Pre-market and post-market sessions can be replayed, where many momentum setups form.
- Bookmarks paired with performance analytics turn practice into a trackable study record.
Cons
- Level 2 is locked to the $89 Premium tier, so the cheaper Pro plan is incomplete for any trader whose strategy depends on reading the order book.
- Pro caps historical data at 2 years, which limits how far back setups can be studied without upgrading.
- “Delayed Live” runs 15 minutes behind and the platform never offers live execution, so it sharpens pattern recognition but not real-fill experience.