# DeltaV Academy vs FredSky

The clearest difference is in-app purchases: FredSky at none against DeltaV Academy's 3. DeltaV Academy's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. DeltaV Academy sells 3 in-app purchases, starting at $8.99 per month. FredSky asks for nothing beyond the download.

## The numbers

| Metric | DeltaV Academy | FredSky |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 31 MB | 21 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Salute to Suit](https://appshunter.io/developer/1803833125) | [Frederick Duggan](https://appshunter.io/developer/1880592487) |

## What reviewers say

### DeltaV Academy

[App page](https://appshunter.io/ios/app/deltav-academy-3d-orbit-sim/id6787456171)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $8.99 | per month |
| Pro | $69.00 | per year |
| Delta-V Academy Lifetime | $149.00 | one-time |


### FredSky

[App page](https://appshunter.io/ios/app/fredsky/id6794165144)

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

**In-app purchases:** none


## Frequently asked questions

### Is DeltaV Academy free?

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

### Is FredSky free?

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

### Do DeltaV Academy or FredSky have ads?

Neither DeltaV Academy nor FredSky shows ads.

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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.*