Paper trading for iPhone
The market is real.
The money isn’t.
Celerium is a trading terminal for your phone that runs on live markets and virtual cash. Trade stocks, options, FX and crypto with $100,000 you cannot lose and build a track record on one verified leaderboard.
Free during the beta · Google or email sign-in · No real money, ever
Trade every asset class
- US stocks
- ETFs
- Options
- Short selling
- FX
- Crypto
- TSX
- LSE
- XETRA
- $100,000
- of virtual cash on day one
- 14,000+
- US stocks and ETFs, plus options, FX, crypto and foreign listings
- 09:30–16:00ET
- the only hours an order fills; anything else waits for the open
- $0
- of real money at risk
The terminal
Every screen a trader needs. None of the risk.
Celerium is laid out like a professional terminal: dense tables, numbers that line up, one accent colour, and green and red that mean direction and nothing else.
Quote anything
Live prices with pre-market and after-hours. Intraday charts with VWAP, Bollinger Bands, RSI and MACD. Three financial statements you can graph line by line, an options chain with IV and delta, and the news that moved the stock.
Trade like it counts
Market and limit orders, fractional shares, buy, sell, short and cover, calls and puts, FX. Fills happen only in the regular session, against a live book; an order placed at midnight waits for the open. Dividends and splits land in your account.
Keep a real record
Equity curve, P&L, drawdown, Sharpe, beta against SPY and a backtest of today’s holdings. Every fill is replayed against daily closes, so the number is the number.
Compete on one leaderboard
The Master Leaderboard ranks everyone by all-time return under the same rules. Follow players, copy a trade in one tap, and watch rank history and the Race.
Command palette
Type where you want to go.
Every screen has a short function code. Type a symbol, a code, or both, and the palette takes you there. No menus to dig through, and the same four letters on every screen.
- >AAPL
- Quote overview: price, chart, stats, financials, options, news
- >NVDA CHRT
- Intraday chart with VWAP, Bollinger Bands, RSI and MACD
- >AAPL OPT
- The options chain: calls and puts, IV and delta
- >EURUSD
- Any instrument the master knows: FX, crypto, TSX, LSE, XETRA
- >BRIEF
- This morning’s brief, written at 7:45 AM ET
- >PLYR
- The Master Leaderboard
- >CHAT
- Your rooms and direct messages
- >HELP
- Every function, explained
Players
One leaderboard. Real-life rules.
Paper trading is only honest when everyone plays the same game. Celerium puts every account on one board and keeps the rules the market’s own.
- 01
Ranked by return, not by bankroll
Everyone starts with the same $10,000 under the same real-life rules, so the Master Leaderboard measures skill. It is the single verified record of how you trade.
- 02
Follow, then copy a trade in one tap
The activity feed shows what the players you follow just did. Copy prefills your ticket with the same symbol, side and size; you decide whether to send it.
- 03
The same start, different trajectories
Rank history charts every player’s position on every trading day. The Race lines everyone up from the same first dollar and shows who pulled ahead, and when.
- 04
Your own games, your own rules
Start a private leaderboard for friends with its own starting cash, whole or fractional shares, shorting, options and FX. Join by code; leave when you like. The Master record stays untouched.
Beyond the tape
The rest of a trading day, built in.
The parts of the job a quote screen leaves out: the morning read, the research, the people you trade with, and the housekeeping.
Morning Brief
A market brief written once each weekday at 7:45 AM ET: what moved overnight, what is on the calendar, with tables and cited articles that open inside the app.
Celerium AI
Ask about any company or the tape in plain English. Answers stream in with numbered sources you can open, and follow-up questions keep the thread.
Games
Create a leaderboard with its own rules: starting cash, whole or fractional shares, shorting, options, FX. Public for anyone to join, or private by invite code.
Player chat
A room for every game, direct messages, reactions and trade cards. The game bot posts the big fills and the rank flips, and pushes reach you when the app is closed.
Alerts in plain English
“Tell me when NVDA crosses 150” becomes an alert. No forms, no conditions to configure; say it the way you would to a colleague.
Corporate actions, applied
Dividends land as cash. Splits adjust your shares. Earnings dates, filings and the 8-K sit on each security’s Events tab, so nothing surprises your P&L.
More screens
Dense on purpose.
Numbers in columns, hairlines instead of boxes, one accent colour. Every screen is a table you can read at a glance.
Start your track record today.
Celerium is in beta on iPhone. Sign in with Google or email, and your $100,000 of virtual cash is waiting at the next open.
Requires iOS 17 or later. Paper trading only; no real money changes hands.
FAQ
Questions, answered straight.
Anything else, ask inside the app: type FDBK in the palette and it reaches us.
Is any of this real money?
No. Every account trades virtual cash, and nothing you do in Celerium touches a brokerage or a bank. You start with $100,000 of paper money and the only thing at stake is your place on the leaderboard.
Are the prices real?
Yes. Quotes come from a live market-data feed, including pre-market and after-hours prints. Orders fill against the live book during the regular US session; FX, crypto and foreign listings fill at their own live quotes.
Can I trade outside market hours?
You can place an order any time, but it will not fill until the instrument’s regular session opens (09:30–16:00 ET for US stocks). Queued orders show as waiting for the open, and you can cancel them until then.
What can I trade?
US stocks and ETFs, listed options (buy and sell calls and puts, covered and cash-secured writing), short selling with buying power, major FX pairs, crypto, and listings on the TSX, LSE and XETRA. Fractional shares are on by default.
What is the Master Leaderboard?
The one board every account is on, ranked by all-time return under real-life rules. It is the verified record of your trading. Games you create or join have their own cash and rules and never change it.
Can I keep my portfolio private?
Yes. Accounts are public by default so the leaderboard means something, but a switch in the Menu hides your account from everyone else, and another hides your online status.
Which devices does it run on?
iPhone, on iOS 17 or later. Celerium is distributed through TestFlight while it is in beta; an App Store release follows.
What does it cost?
Nothing during the beta. There is no premium tier, no commissions and nothing to top up.
How do dividends and splits work?
The way they do in a real account. A dividend arrives as cash on the pay date, a split adjusts your share count and average cost, and both show up in your order history so the record stays complete.