Trading Indicators and Algos Explained: TradingView and More

Paid trading indicators and "algos" are scripts that run on a charting platform, such as TradingView or thinkorswim, and draw levels, highlight setups or send alerts. Sellers market them heavily, often with impressive backtests. This guide explains how they work, how you get access, why past results can mislead, and what to check before you pay.

OOSClub lists trading software, never signal groups or managed accounts, and we never publish a tool's results. Nothing here is financial advice.

What indicators and algos are#

On a charting platform, a script is a small program that runs on price data. The common types:

• Indicators draw something on the chart: trend lines, zones, buy and sell markers, or a table of readings.
• Strategies add entry and exit rules and can be run on past data to produce a backtest.
• Alerts send you a notification, by app, email or webhook, when a script's condition is met.

Sellers often call a package of these an "algo." In most cases it's still a script you run on your own charts, deciding yourself whether to trade. Some also connect alerts to automated order tools, which raises the stakes.

How paid TradingView scripts work#

Most paid indicators sold on Whop and elsewhere are TradingView invite-only scripts. They're closed-source, and only users the author approves can add them to a chart. The usual process:

1. You pay the seller, often through Whop or their own site.
2. You give them your TradingView username.
3. The seller grants access from the script's page, and it appears in your invite-only scripts.

TradingView sets rules for these vendors. Its script publishing rules bar unrealistic or unsubstantiated performance claims, on TradingView or elsewhere, and require closed-source scripts to explain what they do rather than just calling them "proprietary." Its vendor requirements also say vendors must acknowledge that backtests can be biased.

TradingView plan limits#

Your TradingView plan limits how many indicators you can run on one chart and how many alerts you can keep active. Billed annually, plans run from Basic at $0 to Essential at $12.95, Plus at $29.95, Premium at $59.95 and Ultimate at $199.95 a month. A paid indicator that depends on many alerts may need a higher plan, so add that cost in.

thinkorswim studies#

thinkorswim, Schwab's trading platform, is free for Schwab clients. Custom tools are written in thinkScript, its built-in language, as studies, strategies, scans and study-based alerts. Delivery for paid thinkorswim tools varies by seller, so ask how you'll get the tool and set it up before you pay.

What paid tools cost#

Prices vary widely. Among tools we've checked, a TradingView indicator suite from GrandAlgo starts at $19 a month, while Swift Algo lists $67 a month, $179 a quarter or $799 one-time, with all sales final. Most sell monthly subscriptions, some add lifetime deals, and refund terms range from short money-back windows to none at all.

Why backtests and past alerts mislead#

The chart screenshot showing every arrow at the perfect spot is a common sales pitch, and an unreliable one.

Repainting#

TradingView defines repainting as a script behaving differently on historical bars than in real time. Common causes include values that keep changing until a bar closes, and scripts that pull later data into earlier bars. A repainting indicator can show flawless past alerts it would never have given you live.

Overfitting#

A strategy can be tuned until it fits past data almost perfectly, then fail on new data. Researchers have shown that the usual safeguards are unreliable for investment backtests and proposed ways to measure the probability of backtest overfitting. Regulators treat hypothetical results cautiously too: the SEC's marketing rule bars investment advisers from showing hypothetical performance in ads unless strict conditions are met.

Unrealistic settings#

TradingView's own docs say its Strategy Tester fills orders from chart data and makes assumptions about price movement inside each bar. Results can look better than real trading would be, especially with zero commissions, no slippage or unrealistic position sizes. TradingView's rules call zero margin unrealistic for exactly this reason.

What to check before you pay#

1. What it actually does. Can the seller explain the logic in plain words, even if the code is hidden?
2. Whether it repaints. Ask directly, and watch it live on a demo or small chart before relying on past arrows.
3. The platform and plan you need. TradingView, thinkorswim, NinjaTrader or another, and which plan for the alerts you'll use.
4. The markets it covers. Stocks, options, futures, forex or crypto. Some "algos" are built only for futures.
5. Price, trial and refund terms, especially for lifetime deals.
6. The claims. Win rates, returns and "accuracy" figures are marketing until proven otherwise. Guaranteed or fixed returns are a red flag; our guide to spotting trading scams covers the warning signs.

Related tools#

Indicators read the chart; scanners and options-flow tools look across the market for unusual activity. Our guide to options flow and market scanners explains those, and our guide to options basics covers the instruments many of these tools focus on.

Our guide to backtesting and paper trading explains how to test a tool before you pay for it.

Trading tools on OOSClub#

The stocks and options niche lists indicators, algos, scanners and options-flow tools, with what each says it does, the platforms and markets it covers, its plans and refund terms. We never publish a tool's backtests, win rates or returns. Any results claim is shown as a quote, labeled as the seller's claim.