# RiskEngine vs Position Size Calculator

The clearest difference is in-app purchases: RiskEngine at none against Position Size Calculator's 2. RiskEngine also leads on update cadence (every 2 days vs weekly). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Position Size Calculator sells 2 in-app purchases, starting at $3.99 per month. RiskEngine asks for nothing beyond the download.

RiskEngine ships an update every 2 days, Position Size Calculator weekly. The most recent releases landed on October 31, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | RiskEngine | Position Size Calculator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Weekly |
| Size | 5 MB | 93 MB |
| Requires iOS | 16.6 | 16.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [Ivan Vecchi](https://appshunter.io/developer/927926503) | [Vladyslav Boiko](https://appshunter.io/developer/1894025020) |

## What reviewers say

### RiskEngine

[App page](https://appshunter.io/ios/app/riskengine/id6761357170)

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

**In-app purchases:** none


### Position Size Calculator

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO Monthly | $3.99 | per month |
| PRO Lifetime | $9.99 | one-time |


## Frequently asked questions

### Is RiskEngine free?

RiskEngine is free to download, with no in-app purchases.

### Is Position Size Calculator free?

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

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

Both RiskEngine and Position Size Calculator show ads.

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

RiskEngine ships an update every 2 days, and Position Size Calculator weekly. Most recently, RiskEngine was updated on October 31, 2026 and Position Size Calculator on November 5, 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.*