# Dragon ISS Docking Simulator vs 3,2,1 Launch!

The clearest difference is in-app purchases: 3,2,1 Launch! at none against Dragon ISS Docking Simulator's 3. 3,2,1 Launch! also leads on ads (none vs shown). Dragon ISS Docking Simulator's advantage is update cadence (every 2 months vs every 13 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Dragon ISS Docking Simulator sells 3 one-off in-app purchases. 3,2,1 Launch! asks for nothing beyond the download.

Dragon ISS Docking Simulator ships an update every 2 months, 3,2,1 Launch! every 13 months. The most recent releases landed on October 9, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Dragon ISS Docking Simulator | 3,2,1 Launch! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/321-launch/id6471444553/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 13 months |
| Monetization | — | Free |
| Size | 206 MB | 1008 MB |
| Requires iOS | **14.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Vitalii Lebedynskyi](https://appshunter.io/developer/1658553626) | [NASA](https://appshunter.io/developer/355542146) |

## What reviewers say

### Dragon ISS Docking Simulator

[App page](https://appshunter.io/ios/app/dragon-iss-docking-simulator/id1658553624)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donate $1.19 | $0.99 | one-time |
| Donate 3.49 | $2.99 | one-time |
| Donate $5.99 | $4.99 | one-time |


### 3,2,1 Launch!

[App page](https://appshunter.io/ios/app/321-launch/id6471444553)

Experience the journey of a spacecraft from selection to launch. This game features 8 mini-games that educate players on the engineering and processes involved in sending a spacecraft into orbit.

**Highlights:** Rocket and spacecraft matching, Engineering analysis, Spacecraft cleaning, Rocket assembly, Fueling process, Orbit targeting

**In-app purchases:** none


## Frequently asked questions

### Is Dragon ISS Docking Simulator free?

Dragon ISS Docking Simulator is free to download, with in-app purchases available.

### Is 3,2,1 Launch! free?

3,2,1 Launch! is free to download, with no in-app purchases.

### Do Dragon ISS Docking Simulator or 3,2,1 Launch! have ads?

Dragon ISS Docking Simulator shows ads; 3,2,1 Launch! does not.

### Which is updated more often, Dragon ISS Docking Simulator or 3,2,1 Launch!?

Dragon ISS Docking Simulator ships an update every 2 months, and 3,2,1 Launch! every 13 months. Most recently, Dragon ISS Docking Simulator was updated on October 9, 2026 and 3,2,1 Launch! on October 8, 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.*