Comparison

Black vs Optactic

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

Head to head
About

Black

This tool calculates stock option prices using the Black-Scholes model. It allows users to input various parameters like stock price, strike price, and expiration date to determine put and call option values. You can also solve for implied volatility or test the sensitivity of results to different inputs.

Highlights
  • Black-Scholes option pricing
  • Solve for implied volatility
  • Sensitivity analysis
  • Dividend adjustment
  • On-the-fly variable adjustment
  • Put and Call option calculation
Features
Read full description

Simple and effective Black-Scholes solver to help you price different stock option chains. Allows you to calculate put / call option prices given volatility or solve for volatility given a put / call option price. In addition to the standard solver, this calculator lets you test the sensitivity of your answer to the different input variables. Quickly adjust any variable in the equation to see how it affects the final answer. Simply use the provided scroll bars once entering a value to adjust (on the fly) the final answer. Variables which allow for sensitivity study include: - Stock Price - Option Strike Price - Risk-Free Interest Rate In addition to solving the standard Black-Scholes formula, this calculator also adjusts the solution to account for dividends (if applicable) in the underlying stock. However, dividends can also be excluded from the calculation and set to zero if the user desires a true original Black-Scholes value. Standard inputs into the solver include: - Volatility - Call Price - Put Price - Current Stock Price - Date of Option Expiration - Stock Dividend Rate - Risk-Free Interest Rate Solutions from the solver include: - Volatility Given Put Price - Volatility Given Call Price - Put Price Given Volatility - Call Price Given Volatility Slight rounding errors in the final solution may exist due to the standard approximation made to solve the cumulative normal distribution function. However, the final value with these errors matches closely to many other Black-Scholes solvers available today.

About

Optactic

This tool helps experienced traders visualize and plan options strategies, while also offering learning resources for beginners. It simplifies complex strategies, visualizes risks and rewards, and provides strategy recommendations. The app is fully functional offline.

Highlights
  • Visualize risks and rewards
  • Build exit plans
  • Strategy recommendations
  • 40 pre-defined strategies
  • Offline functionality
  • Black-Scholes pricing model
Features
Read full description

Optactic is a very useful tool for experienced traders to plan and visualize options strategies.  Beginners can also use this app to learn and master various options strategies using the in-app learning resources. - Simplify complex Options strategies. - Visualize risks and rewards through time and volatilities. - Build exit plans. - Strategy recommendations based on your predictions. - Rank strategies by potential rewards and risks. - 40 pre-defined Options strategies or build your own custom strategy. - Chance of profit, expected profit and returns, greeks, margin estimation. - Provide hook to your own DIY market data server. - Fully functional offline. Accuracy - Option price calculation is based on black scholes pricing model. - Stock price probability is based on log normal. - Rigorously tested to meet the strict accuracy requirement of our in-house traders. Continuous Improvement - We are actively developing new features, fixing bugs and improve app performance. - Our goal is to make Optactic an indispensable tool for option strategists. EULA - We follow the Apple standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Black3 screens
Optactic4 screens

Verdict

The call

The clearest difference is rating: Optactic at 4.3 against Black's 3.0. Black's advantage is in-app purchases (none vs 4) and iOS requirement (11.2 vs 13.0). On price, review sentiment, ratings volume and ads 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. Optactic sells 4 in-app purchases, starting at $2.99 per month. Black asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Optactic holds the better App Store score, 4.3 against 3.0. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Scorecard4 real differences · 6 level
Black versus Optactic: the parameters behind the verdict, then further details
ParameterBlackOptactic
PriceFreeFree
Rating3.0 (5 ratings)4.3 (4 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings5 — better4
Update frequency—Every 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS11.2 — better13.0
Further details — not scored
Size14 MB23 MB
Age rating4+4+
DeveloperSquiggly Shark LLCHonghai Gu

Customer experience

Black

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Optactic

All ratings4 ratings
Positive75.0%
Neutral25.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Black

No in-app purchases

4 purchases

Optactic

Subscriptions3
  • Monthly Subscription$2.991 Month
  • Monthly Subscription1 Month trial$5.991 Month
  • Annual Subscription$17.991 Year
One-time1
  • Premium Version$17.99

Questions

Is Black free?
Black is free to download, with no in-app purchases.
Is Optactic free?
Optactic is free to download, with in-app purchases available.
Which has better reviews, Black or Optactic?
Optactic is rated higher. Black averages 3.0 out of 5 from 5 ratings, while Optactic averages 4.3 from 4 ratings.
Do Black or Optactic have ads?
Neither Black nor Optactic shows ads.

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