# Helicopter Performance Planner vs Full Scale HSI

The clearest difference is in-app purchases: Full Scale HSI at none against Helicopter Performance Planner's 1. Helicopter Performance Planner's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Helicopter Performance Planner sells 1 in-app purchase, starting at $9.99 per year. Full Scale HSI asks for nothing beyond the download.

## The numbers

| Metric | Helicopter Performance Planner | Full Scale HSI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Size | 26 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Gizem Celik](https://appshunter.io/developer/1864228920) | [Chanon Mallanoo](https://appshunter.io/developer/6795595335) |

## What reviewers say

### Helicopter Performance Planner

[App page](https://appshunter.io/ios/app/helicopter-performance-planner/id6757018428)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Annual Premium Access | $9.99 | per year |


### Full Scale HSI

[App page](https://appshunter.io/ios/app/full-scale-hsi/id6796811859)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Helicopter Performance Planner free?

Helicopter Performance Planner is free to download, with in-app purchases available.

### Is Full Scale HSI free?

Full Scale HSI is free to download, with no in-app purchases.

### Do Helicopter Performance Planner or Full Scale HSI have ads?

Neither Helicopter Performance Planner nor Full Scale HSI shows ads.

---

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