The Candl app is a browser-based stock trading simulator that teaches real investing mechanics
without any real money on the line. Instead of tracking real-world tickers, Candl generates
synthetic companies and puts them through procedurally-driven market regimes (bull runs,
crashes, sideways grinds, and everything in between), so every session plays out differently
and no one can simply memorize what happened to a real stock in the past.
How it works
You start with virtual cash and a live chart, watchlist, and newswire. Buy, sell, short, and
cover positions, set stop-losses, and react to macro events, sector rotation notes, and
company-specific news as they break. An AI advisor and AI-generated newswire (in supported
modes) add live market commentary and coaching, so the practice feels closer to reading a
real terminal than clicking through a static tutorial.
Who it's for
Candl is built for anyone who wants to learn how markets behave before risking real capital:
students learning investing fundamentals for the first time, teachers running a classroom
exercise on market cycles, and casual players who just want a fast, honest trading game.
Ways to play
Campaign mode walks through a scored sequence of scenario-driven levels, each
graded on the trading decisions you make. Learn mode pairs short lessons with
guided, step-by-step prompts and quizzes so new concepts stick immediately. Infinite
mode generates an endless procedural market for open-ended practice, and a dedicated
classroom mode lets teachers host a live lesson for a roster of students in real time.
Candl runs entirely in your browser at candlapp.org:
no download, no signup required to start, and no real money at risk.
Frequently asked questions
Is Candl free to use?
Yes. Candl runs entirely free in your browser with no signup required to start. Infinite
mode and full analytics are free for everyone; a Pro tier adds extra AI features like the
newswire, advisor, and coaching.
Does Candl use real money or real stocks?
No. Candl trades entirely synthetic, fictional companies with no connection to real markets
or real money, so it's safe to experiment and learn investing mechanics without financial
risk.
Can Candl generate a custom market scenario?
Yes. Candl's AI Situation Generator turns any plain-language scenario you type into a full
playable market, complete with a synthetic company, price action, and a newswire that plays
out the story as you trade.
What languages does Candl support?
Candl is fully available in 11 languages: English, Spanish, French, German, Portuguese,
Russian, Chinese, Hindi, Vietnamese, Arabic, and Persian, including right-to-left support
for Arabic and Persian.
Does Candl have tools for teachers and classrooms?
Yes. Candl includes a classroom mode where teachers can host a live lesson for a roster of
students, assign lessons and scenarios, and review grading, in addition to the core trading
simulator.