# 3,2,1 Launch! vs Stack and Sell

The clearest difference is ads: 3,2,1 Launch! at none against Stack and Sell's shown. 3,2,1 Launch! also leads on monetization model (free vs ad-supported). Stack and Sell's advantage is update cadence (daily vs every 13 months). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for 3,2,1 Launch! against 5.0 for Stack and Sell. Both are backed by a comparable volume of ratings — 4 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

3,2,1 Launch! ships an update every 13 months, Stack and Sell daily. Both last shipped on November 5, 2026.

## The numbers

| Metric | 3,2,1 Launch! | Stack and Sell |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/321-launch/id6471444553/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/stack-and-sell/id6770296638/reviews) |
| Number of ratings | **4** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 13 months | **Daily** |
| Monetization | **Free** | Ad-supported |
| Size | 1008 MB | 123 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Benjamin Nagel](https://appshunter.io/developer/1895207452) |

## What reviewers say

### 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


### Stack and Sell

[App page](https://appshunter.io/ios/app/stack-and-sell/id6770296638)

Build colorful box towers by tapping to drop falling boxes. Sell your stacks for coins to upgrade your warehouse and hire idle workers who earn money for you. Unlock new themes and spin a lucky wheel for prizes.

**Highlights:** One-tap stacking gameplay, Sell stacks for coins, 12 upgrade paths, Idle worker system, Unlockable box themes, Lucky spin wheel, Daily login bonuses

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

**In-app purchases:** none


## Frequently asked questions

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

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

### Is Stack and Sell free?

Stack and Sell is free to download, with no in-app purchases.

### Which has better reviews, 3,2,1 Launch! or Stack and Sell?

3,2,1 Launch! and Stack and Sell are both rated 5.0 out of 5 on the App Store, from 4 and 3 ratings respectively.

### Do 3,2,1 Launch! or Stack and Sell have ads?

Stack and Sell shows ads; 3,2,1 Launch! does not.

### Which is updated more often, 3,2,1 Launch! or Stack and Sell?

3,2,1 Launch! ships an update every 13 months, and Stack and Sell daily. Most recently, 3,2,1 Launch! was updated on November 5, 2026 and Stack and Sell 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.*