# Position Size Calculator vs OptionsDeskiOS

The clearest difference is ads: OptionsDeskiOS at none against Position Size Calculator's shown. OptionsDeskiOS also leads on update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Position Size Calculator sells 3 in-app purchases, starting at $3.99 per month and OptionsDeskiOS sells 1 in-app purchase, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Position Size Calculator ships an update weekly, OptionsDeskiOS every 3 days. The most recent releases landed on October 17, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Position Size Calculator | OptionsDeskiOS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/optionsdeskios/id6782591113/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 93 MB | 3 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Vladyslav Boiko](https://appshunter.io/developer/1894025020) | [Michael Adante](https://appshunter.io/developer/6773968050) |

## What reviewers say

### Position Size Calculator

[App page](https://appshunter.io/ios/app/position-size-calculator-psc/id6762391592)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Monthly | $3.99 | per month |
| PRO Annual | $19.99 | per year |
| PRO Lifetime | $39.99 | one-time |


### OptionsDeskiOS

[App page](https://appshunter.io/ios/app/optionsdeskios/id6782591113)

This app provides institutional-grade options analysis tools for mobile devices. Evaluate single options or complex strategies, model scenarios, and track portfolio exposure with real-time data and detailed analytics.

**Highlights:** Multi-leg option strategy builder, Real-time Black-Scholes pricing, Interactive payoff diagrams, Full Greeks suite, Scenario analysis simulator, Portfolio risk management, Probability calculator

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| OptionsDesk Pro | $5.99 | per month |


## Frequently asked questions

### Is Position Size Calculator free?

Position Size Calculator is free to download, with in-app purchases available.

### Is OptionsDeskiOS free?

OptionsDeskiOS is free to download, with in-app purchases available.

### Do Position Size Calculator or OptionsDeskiOS have ads?

Position Size Calculator shows ads; OptionsDeskiOS does not.

### Which is updated more often, Position Size Calculator or OptionsDeskiOS?

Position Size Calculator ships an update weekly, and OptionsDeskiOS every 3 days. Most recently, Position Size Calculator was updated on October 17, 2026 and OptionsDeskiOS on October 12, 2026.

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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.*