# Position Size Calculator vs SizeRight

The clearest difference is in-app purchases: SizeRight at none against Position Size Calculator's 3. Position Size Calculator's advantage is update cadence (weekly vs every 3 weeks). On price, ads, 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. SizeRight asks for nothing beyond the download.

Position Size Calculator ships an update weekly, SizeRight every 3 weeks. Both last shipped on October 17, 2026.

## The numbers

| Metric | Position Size Calculator | SizeRight |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Weekly** | Every 3 weeks |
| Size | 93 MB | 26 MB |
| Requires iOS | 16.6 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Vladyslav Boiko](https://appshunter.io/developer/1894025020) | [Alexander Bacsa](https://appshunter.io/developer/1895938685) |

## 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 |


### SizeRight

[App page](https://appshunter.io/ios/app/sizeright-position-size/id6764857338)

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

**In-app purchases:** none


## Frequently asked questions

### Is Position Size Calculator free?

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

### Is SizeRight free?

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

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

Both Position Size Calculator and SizeRight show ads.

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

Position Size Calculator ships an update weekly, and SizeRight every 3 weeks. Most recently, Position Size Calculator was updated on October 17, 2026 and SizeRight on October 17, 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.*