Comparison

MCarloRisk3D vs Crypto Time Machine

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

MCarloRisk3D

Estimate future stock and crypto prices with advanced Monte Carlo simulations. Backtest your strategies and account for extreme market events with customizable parameters. Offers 3D visualizations for enhanced understanding of probability surfaces.

Highlights
  • Monte Carlo price/probability estimation
  • Stock and crypto analysis
  • Backtesting and verification
  • 3D probability surface visualization
  • Optional Black Swan events
  • Tunable forward volatility
  • Historical data resampling
Features
Read full description

Get estimates of price / probability distribution into the future, fast, for stocks and crypto. Backtest your results. Don't just multiply volatility by root(t), do a monte carlo study and cover the extreme bases. Give the symbol-pushers a run for their money. Can your equation throw in random, out of the ordinary shocks of different magnitude and probability? This app can! MCarloRisk3D: with 3D viewing options for better understanding of the estimated probability surface. Now with price data feeds for higher market cap crypto coins. Stock price risk analyzer app for the common man. Now with optional Black Swan events and tunable forward volatility. Estimates future price distribution using random walk theory. 
Background discussion: E. Fama article on early random walk studies from the 1960's:

 http://www.ifa.com/Media/Images/PDF%20files/FamaRandomWalk.pdf

 New model calibration tutorial:

 http://diffent.com/tuning1.pdf

 The app uses prior data from the stock in question for volatility estimates. 

User can control how far back in time to use historical data to capture only the current "epoch" of a company or of the market as a whole if desired. 
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 Google Finance 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. 

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). The stochastic model may be tuned or calibrated only by adjusting the maximum number of days backwards to sample or adjusting the black swan parameters. Model Validation 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 estimated probability (risk) levels. 

 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 in increasing time sequence for all withheld points.

 A vertical "Cursor Beam" is provided that you can drag across the new plots in the Monte Carlo tab and the Validate tab to show the plotted values from several curves at once, with the values color-coded to the curves.

 Show the full price probability plot linked to the days-forward setting of the Monte Carlo graph. This is a slice thru the probability surface generated by the Monte Carlo procedure.
 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.

About

Crypto Time Machine

Features
Read full description

Give a date range, select a crypto currency and you will get history data of it: - The longest row of price drop - Highest trading volume date and value - Best dates to trade and the rise in percents If you like the app or you have a feature suggestion, please write a review. You can also contact me with email: oskari.saarinen@ssl-saario.xyz

Screenshots

Crypto Time Machine4 screens

Verdict

The call

The clearest difference is update cadence: MCarloRisk3D at every 2 months against Crypto Time Machine's every 14 months. MCarloRisk3D also leads on iOS requirement (12.0 vs 14.0). Crypto Time Machine's advantage is device support (3 vs 1). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

MCarloRisk3D ships an update every 2 months, Crypto Time Machine every 14 months. The most recent releases landed on July 20, 2026 and September 6, 2026 respectively.

Scorecard3 real differences · 7 level
MCarloRisk3D versus Crypto Time Machine: the parameters behind the verdict, then further details
ParameterMCarloRisk3DCrypto Time Machine
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyEvery 2 months — betterEvery 14 months
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPadiPhone, iPad, iPod — better
Requires iOS12.0 — better14.0
Further details — not scored
Size2 MB1 MB
Age rating4+4+
Developerdifferential enterprisesoskari saarinen

In-app purchases

None

MCarloRisk3D

No in-app purchases

None

Crypto Time Machine

No in-app purchases

Questions

Is MCarloRisk3D free?
MCarloRisk3D is free to download, with no in-app purchases.
Is Crypto Time Machine free?
Crypto Time Machine is free to download, with no in-app purchases.
Do MCarloRisk3D or Crypto Time Machine have ads?
Neither MCarloRisk3D nor Crypto Time Machine shows ads.
Which is updated more often, MCarloRisk3D or Crypto Time Machine?
MCarloRisk3D ships an update every 2 months, and Crypto Time Machine every 14 months. Most recently, MCarloRisk3D was updated on July 20, 2026 and Crypto Time Machine on September 6, 2026.

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