# Black vs Optactic

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.

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.

## The numbers

| Metric | Black | Optactic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (5 ratings)](https://appshunter.io/ios/app/black-scholes-options-solver/id1330420771/reviews) | **[4.3 (4 ratings)](https://appshunter.io/ios/app/optactic-option-strategy-tool/id1574506138/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 3 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 14 MB | 23 MB |
| Requires iOS | **11.2** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Squiggly Shark LLC](https://appshunter.io/developer/1123398549) | [Honghai Gu](https://appshunter.io/developer/755671888) |

## What reviewers say

### Black

[App page](https://appshunter.io/ios/app/black-scholes-options-solver/id1330420771)

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:** macOS Compatibility

**In-app purchases:** none


### Optactic

[App page](https://appshunter.io/ios/app/optactic-option-strategy-tool/id1574506138)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $2.99 | per month |
| Monthly Subscription | $5.99 | per month |
| Annual Subscription | $17.99 | per year |
| Premium Version | $17.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*