# Option Calculation — Calculate option price, vol

> Calculate option price, vol (iPhone/iPad app by jiang jin fu.)

- Source: https://appshunter.io/ios/app/option-calculation/id6698853371 (this page in markdown: same URL + `.md`)
- Developer: [jiang jin fu](https://appshunter.io/developer/499276167)
- Category: Finance, Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 16 · 5 MB
- Languages: English, Chinese
- Released: 2024-12-09
- Data updated: 2026-07-06
- User reviews in markdown: https://appshunter.io/ios/app/option-calculation/id6698853371/reviews.md

## What is Option Calculation?

This is an effective and practical app for calculation of European-style option! 
Based on BSM Model:

• support to calculate option price, implied volatility, put-call parity.
• When you calculate option price/implied volatility, the greeks are calculated and show simultaneously.
• Support to show option price/delta/gamma for 2D/3D interactively!
• Overlay contracts' curve  with different days/implied volatility in same graph.


For example, to calculate option price:
input underlying price, strike price, days to expire, riskless rate, implied volatility,
tap the blue button in the bottom,
the option price will be calculated and show immediately!
Then tap the button in the top right, 
show function line of delta/gamma and underlying price in theory.
Slide to change the underling price, see how price/delta/gamma changes.


## Version history (last 5 releases)

### 1.5 — 2026-07-02

New feature: show option price/delta/gamma in 3D scene!

### 1.4 — 2026-05-17

1. Overlay contracts' curve  with different days/implied volatility in same graph.
2. Max underlying & strike price set to 1000000.

### 1.3 — 2025-04-29

New feature:
Support to show option price graphically, you can see the changes by sliding underlying price.

### 1.2 — 2025-04-02

New features:
Show function line of delta/gamma and underlying price in theory.
Slide to change the underling price, delta/gamma also changes.

### 1.1 — 2025-01-07

1. calculate and show greeks automatically
2. support to run on iPad

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## More apps by jiang jin fu

- [寻股](https://appshunter.io/ios/app/id6745875929)
- [Hiking+](https://appshunter.io/ios/app/hiking-plus/id6755375670)

All apps by jiang jin fu: https://appshunter.io/developer/499276167

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-06.*