Bybit · Deribit · OKX · MOEX — one window

See where the market gets stuck — and where it accelerates

Gamma exposure aggregated across three crypto exchanges, the full options chain with Greeks, 19 screener presets, a paper account and a portfolio risk manager. Everything is visible before you pay — 24 hours of full access, no card.

Start free — 24 hours See what's inside

No exchange API keys. We never place orders and never touch your funds.

data sources: Bybit, Deribit, OKX, MOEX ISS

1 000+

option contracts in the live GEX board

screener presets · 19 strategy templates

$10

per month for the paid tier

OptionBase GEX studio: BTC price with gamma levels, gamma flip, hedge pressure and absolute gamma

Gamma exposure, not a pretty picture

Dealers who sold and bought options have to hedge. That hedging is real buying and selling at specific strikes — and it is the reason price grinds in one zone and runs through another. OptionBase shows where those zones are right now, how they moved over the last 24 hours, and what they looked like before the moves that already happened.

GEX studio

Six views of one board

Price candles with gamma levels drawn on top — so a level that has already turned price three times does not look the same as a level price has never reached.

Now — price and levels, or the strike map with the gamma profile
By expiry — term structure of the hedge
Surface — gamma across strikes and dates
History — daily candles of the level itself
Replay — step the board frame by frame through the archive
Forecast — Monte Carlo with the probability of reaching each level

GEX studio: gamma flip, hedge pressure, absolute gamma and what changed in 24 hours

Dashboard

Three dials and the numbers behind them

Gamma regime, call skew and which side the hedge sits on — then net and absolute GEX, call/put open interest, ATM IV, the expected move, the ±1σ corridor and 25Δ risk reversal.

Key levels with their change over a day, two days and a week
Named markers: gamma flip, gamma walls, volatility trigger, stability peak
Every level carries the probability of being touched before the nearest expiry

OptionBase dashboard: gamma regime, call skew, hedge side, GEX by strike and summary

The chain, the position and the test — in one place

Most GEX services stop at the picture: you see the level and then go somewhere else to build the trade. Here the chain, the position builder, the payoff chart, the stress test and the paper account are the same screen.

Chain & builder

Click a price — get a leg

Every listed expiry, volume, open interest, delta, IV and bid/mark/ask with sizes. Left click on bid to sell, on ask to buy. The position is priced as you build it.

19 templates — spreads, straddle, strangle, condor, butterflies, risk reversal, calendar
P&L, Delta, Gamma, Theta and Vega curves, now and at expiry
Max profit, max loss, break-even points, ROI, debit/credit
Stress test — spot ±50%, IV ±50 points, time rolled forward to expiry
Export the chart to PNG

Options chain with Greeks, position builder, scenario result and stress test

Screeners

19 presets instead of scrolling the chain

Put selling, 0DTE, expensive and cheap volatility, theta harvesting, long gamma, cheap tails, open-interest walls — each preset is a filter over the live board, and you can build your own.

IV screener — IV Rank by expiry, put/call skew, term structure
Option arbitrage — box spreads, convexity, conversion/reversal, jelly roll
Mispricing — quotes against mark, boxes with fixed P&L, verticals with non-negative payoff
Backtest — run any preset over the snapshot archive: win rate, average P&L, worst trade

Option screener with 19 presets over the live board

Volatility

The surface, the smile and what actually happened

A 3D moneyness × tenor surface, the IV smile across strikes, the ATM term structure and 30-day realised volatility next to it — so implied can be compared with realised.

Volatility surface, IV smile and term structure

And the rest of the desk

Thirteen screens, one account, one subscription.

Paper account

Execute the position you just built into a paper portfolio: open positions with live P&L, trade history, closing at mark. The loop from level to trade stays in one place.

Risk manager

Portfolio Greeks plus ten full-revaluation scenarios — a crash, an IV spike, a week of nothing happening.

Alerts

Conditions on price, gamma regime, levels, IV and risk reversal, delivered to Telegram.

Markov chains

A regime model over candles with a plain-language read: the bias, the main action, what not to do, size and exit.

Crypto arbitrage

Spot↔perp and cross-exchange spreads across Bybit, Binance and OKX, funding included.

Academy

25 lessons in five tracks with checks and tasks on real screens, plus a 45-term glossary. Included in every paid tier.

MOEX as a first-class market

Options on Moscow Exchange futures — the same chain, the same builder, the same screeners. IV and Greeks are computed on our side with Black-76.

Board history

Every analytical screen can be recomputed on a past board from the snapshot archive — not just the chart, the screeners too.

Two languages, two themes

Full English and Russian interface, including the whole course. Dark and light themes.

What OptionBase does not do

This list matters as much as the feature list — it is the part most tools in this niche leave vague.

No exchange API keys. We never ask for them and could not use them if you sent them.
No orders. Nothing is executed anywhere. We read public market data, that is all.
No signals and no calls. We show the board and the maths, you make the decision.
No return promises. Anyone promising them in this market is selling you something else.
No access to your funds. There is nothing to withdraw from an OptionBase account.
No hidden dealer data. Dealer positioning is an assumption, and we say so in the app.

Pricing

Registration opens a 24-hour trial with every Premium module unlocked — no card, no call. After that you stay on Free for as long as you like.

Trial

Free

24 hours, starts at registration

Every Premium module
Option arbitrage, screeners, mispricing
Markov chains
No limit on legs

Start

Free

After the trial, for as long as you like

Calculator and chain
Paper portfolio
Crypto arbitrage
Up to 4 legs, 2 saved positions
Option arbitrage, screeners
Markov chains

Start

Active

$10 / month

The extended calculator

Everything in Free
Up to 10 legs
Up to 10 saved strategies
All 19 templates
Option arbitrage, screeners
Markov chains

Choose Active

Premium

$20 / month

Everything, with no locks

Everything in Active
Option arbitrage and every screener
Markov chains and the adviser
Unlimited legs and saves
GEX history and replay

Choose Premium

Questions people actually ask

Where does the data come from?

Public market-data endpoints of Bybit v5, Deribit, OKX and the Moscow Exchange ISS. Gamma exposure for crypto is summed across Bybit, Deribit and OKX, because a hedge that sits on one venue is not the hedge the market has to trade. Private endpoints are never used.

Do I have to connect my exchange account?

No, and you cannot. OptionBase has no API-key storage and no order routing. The paper account inside the service is where positions are executed, so nothing you do here can reach your exchange balance.

How is the gamma exposure calculated?

GEX per strike = gamma × open interest × price² × 0.01, i.e. dollars of hedge per 1% move. Net GEX is call GEX minus put GEX; positive damps movement, negative accelerates it. The sign relies on the common assumption that dealers are long calls and short puts. That is an assumption, not an observed fact — nobody sees real dealer positioning, and the app says so where the number is shown.

Is this investment advice?

No. OptionBase is an analytics and education tool. It does not produce recommendations, does not manage money and does not solicit any transaction. Every decision, and every consequence of it, is yours.

What can I do before paying?

Registration gives 24 hours with every module unlocked. After that the Free tier keeps the calculator, the chain, the paper portfolio and crypto arbitrage open indefinitely. Locked sections stay visible in the menu, so you always know what the paid tier contains.

Which markets are covered?

Crypto options on BTC, ETH, SOL and XRP, and options on Moscow Exchange futures across 65 underlyings. US equity options are not covered today.