Black vs Optactic
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Black-Scholes option pricing
- Solve for implied volatility
- Sensitivity analysis
- Dividend adjustment
- On-the-fly variable adjustment
- Put and Call option calculation
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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.
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.
- Visualize risks and rewards
- Build exit plans
- Strategy recommendations
- 40 pre-defined strategies
- Offline functionality
- Black-Scholes pricing model
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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/
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Verdict
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
Both are free to download. Optactic sells 4 in-app purchases, starting at $2.99 per month. Black asks for nothing beyond the download.
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.
| Parameter | Black | Optactic |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (5 ratings) | 4.3 (4 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 5 — better | 4 |
| Update frequency | — | Every 3 weeks |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 11.2 — better | 13.0 |
| Further details — not scored | ||
| Size | 14 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Squiggly Shark LLC | Honghai Gu |
Customer experience
Black
Optactic
In-app purchases
Black
No in-app purchases
Optactic
- Monthly Subscription$2.991 Month
- Monthly Subscription1 Month trial$5.991 Month
- Annual Subscription$17.991 Year
- Premium Version$17.99
Questions
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