MCarloRisk vs Options AI
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MCarloRisk
Analyze stock and cryptocurrency price probabilities using Monte Carlo simulations. This tool estimates future price distributions and risk of loss without assuming normal returns or requiring manual volatility estimates. It offers portfolio analysis, correlation, and optimization based on historical data.
- Monte Carlo price simulations
- Portfolio risk analysis
- Cryptocurrency support
- Pairwise correlation/regression
- Customizable historical data lookback
- Empirical distribution resampling
- Built-in backtesting
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Stock price / probability risk analyzer & optimizer for the common man. See also our new support for top cryptocurrencies. Now with portfolio support, pairwise correlation/regression analysis of daily returns, and portfolio optimization. Computes forward (price,probability) for your share-weighted portfolio. Unlike other folio optimizers, this code does not assume normality of returns, nor does it require to you enter volatility estimates...these are computed from public historical return data, and you can tell it how far back to look to compute the volatility. Try some optimizations and compare to results from other codes! Main data feed is the innovative IEX. Why rely on the tea leaves of chart reading when you can apply real statistics and historical resampled data to your analysis? While charting tools such as Bollinger bands, moving averages, and candlesticks are generated only on historical data, this app takes past data and remixes it via Monte Carlo methods to generate thousands of possible future price walks, then computes the probabilities of those price outcomes. Also works for stock-like ETFs and short ETFs (e.g. SH = short SPY). Estimates future price distribution using random walk theory, where random samples are chosen from the history of the stock in question. User can control how far back in time to use historical data to capture only the current "epoch" or to take into account long term historical behavior. Built-in backtesting, verification, and model tuning tools. -- Details -- This app models daily stock returns as a stable stochastic process and estimates a future price distribution by Monte Carlo re-sampling from an "empirical distribution" of a user-specified subset of prior (known) daily returns. Be sure to press the Run Monte button on the Monte Carlo tab after changing settings or downloading a new data set. This app downloads historical data from IEX as base data to resample. Prices are converted to daily returns [P(t)/P(t-1)] before resampling. The user can choose how far back to resample. By estimating a probability distribution of future prices at the user-specified investment horizon in this manner, we can give risk-of-loss estimates in thumb-rule fashion, to a first approximation. Reports out estimated price and %loss estimates at the commonly used levels of 1st percentile and 5th percentile (1% and 5% risk). Also reports out median (50th percentile) price estimates at the given number of days forward. Calculations are performed on daily Closing price data. An artificial shock filter is provided, which can be used to reject the resampling of prior returns that are artificially large (due to splits or other artificial re-valuations that do not affect the underlying value of the asset). Theory of operation is described in detail under the Theory tab. The stochastic model may be tuned or calibrated by adjusting the maximum number of days backwards to sample and/or a back in time linear weighting. Stochastic Model Validation (backtest) features: On the Monte Carlo tab, you can withhold any number of recent days from the model and then plot the results of the stochastic risk forecast as lower-bound envelopes at 1% and %5 and all other estimated probability (risk) levels dynamically after the model run is completed. Validate tab: This allows you to perform an exhaustive validation on your model by withholding several points, computing the model, comparing the forward prediction of the model versus the actual reserved data, and repeating this over time for all withheld points. The app provider makes no claims as to the suitability of this app for any purpose whatsoever, and the user should consult an investment advisor before making investment decisions.
Options AI
Trade US equities, ETFs, and complex option spreads visually on your mobile device. Features a drag-and-drop interface for intuitive trade management and a scanner to find opportunities. Offers zero commission stock trades and a flat $5 fee for all option trades.
- Visual option spread trading
- Drag & Drop profit zones
- Trade scanner
- Zero commission stock trades
- Flat $5 option trades
- Mobile trading for equities and ETFs
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Options AI - Options Trading & Investing US Equities, ETFs, and Smarter Option Spreads on the go. Options AI is the trading app built for the way you move. Ditch your desktop and swipe to find anything from stock to advanced option trades. Use Drag & Drop profit zones. Trade an Iron Condor with your thumb. Manage your trades visually to help with entry and exits. Options AI is everything from equity and ETFs to more sophisticated Wall Street strategies you never thought possible on the go. And don’t worry about per contract fees affecting your trading. Options AI is Zero commission for stock trades and features a flat fee $5 on option trades, no matter the size or amount of legs. Apply for an account and add Options AI as your mobile co-pilot for smarter trading. Swipe to Find Your Trade Trade up, down or sideways moves and compare everything from stock to multi-leg option spreads with a swipe. Drag & Drop Trading A revolutionary visual interface for that makes advanced trading straightforward and enjoyable. Trade Scanner Screen and compare trades in live categories of interest across multiple stocks or ETFs. Zero Commission Stock and Flat Low-Cost Option Trades $0 stock commissions and $5 option trades, any trade, any size. If you trade spreads you know why that’s revolutionary. —--------- View Options AI Financial’s fee schedule at disclosures.optionsai.com/disclosures/commission-and-fees Important Disclosures All investing involves risk. Options trading may involve a high degree of risk and therefore is not suitable for all investors. Prior to investing in options please review the Characteristics and Risks of Standardized Options at theocc.com. Options AI does not provide investment, tax or legal advice and does not endorse or recommend any particular security or trading strategy. Brokerage services are provided by Options AI Financial, LLC, member FINRA and SIPC. Check the background of Options AI Financial, LLC at brokercheck.finra.org. SIPC protects securities customers of its members up to $500,000 (including $250,000 for claims for cash). Explanatory brochure available upon request or at sipc.org. By downloading the Options AI app you agree to our Terms and Conditions, which may be found at disclosures.optionsai.com/terms-and-conditions View Options AI Financial’s Customer Relationship Summary (Form CRS) at https://disclosures.optionsai.com/disclosures/form-crs-customer-relationship-summary Developer Options AI, Inc.
Screenshots
Verdict
The clearest difference is review sentiment: MCarloRisk at 100% against Options AI's 46%. MCarloRisk also leads on rating (4.8 vs 3.9) and monetization model (free vs free with in-app purchases). Options AI's advantage is ratings volume (172 vs 5) and iOS requirement (13.4 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
MCarloRisk holds the better App Store score, 4.8 against 3.9. That said, the two scores are not equally well evidenced: Options AI has 172 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of MCarloRisk's written reviews are positive against 46% of Options AI's.
MCarloRisk ships an update fortnightly, Options AI weekly. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | MCarloRisk | Options AI |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | 3.9 (172 ratings) |
| Positive reviews | 100.0% of reviews — better | 46.3% of reviews |
| Number of ratings | 5 | 172 — better |
| Update frequency | Fortnightly | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 13.4 — better |
| Further details — not scored | ||
| Size | 2 MB | 27 MB |
| Age rating | 4+ | 17+ |
| Developer | differential enterprises | Options AI, Inc |
Customer experience
MCarloRisk
Options AI
Bugs and requests
MCarloRisk
Not enough reviews yet to summarise bugs or requests.
Options AI
Reported bugs
10 issues- White screen of death on login
- App crashes randomly during use
- Black screen when viewing open contracts
- Unable to place stock orders
- Unable to view or sell purchased options
Show 5 moreShow fewer
- App doesn't respond to user input
- Glitches cause portfolio to disappear
- Upgrade prompt redirects to App Store preventing use
- Blank screen display on iPhone 13 Pro
- Slow and unstable performance with latest updates
Requested features
7 requests- Ability to link multiple options together
- Sell to open functionality after buy to open
- Call spread options
- Trade confirmation visibility in app
- Better data analytics beyond basic spread visualization
Show 2 moreShow fewer
- Demo mode without requiring account creation
- Improved password reset process
In-app purchases
MCarloRisk
No in-app purchases
Options AI
No in-app purchases
Questions
Is MCarloRisk free?
Is Options AI free?
Which has better reviews, MCarloRisk or Options AI?
Do MCarloRisk or Options AI have ads?
Which is updated more often, MCarloRisk or Options AI?
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