Comparison

3,2,1 Launch! vs Stack and Sell

Price, ratings, monetisation and update history for both games, side by side — with what reviewers say about each.

Head to head
About

3,2,1 Launch!

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
Read full description

In 1998, NASA’s Launch Services Program (LSP) was established to support NASA’s science and robotic missions by procuring commercial launch vehicles. The program was established at NASA’s Kennedy Space Center to centralize technical and management support to spacecraft customers. LSP brings together people, procurement, engineering best practices, strategic planning, studies, and cutting-edge techniques—all instrumental components for the United States to have a dependable and secure Earth-to-Space bridge that is dedicated to launching all types of spacecraft. This game goes through the process of a spacecraft matching to a rocket, the integration of the spacecraft to the rocket and the engineering behind it, and its eventual launch into space and the correct orbit. The game consists of 8 mini games to educate the player on the process Features: • Buying a rocket • How to get where you want to go in space • Analyzing the rocket and spacecraft • How to clean a spacecraft • Putting together a rocket • Time to fuel up • Frequency • Staying on target The characters that the player can choose from are represented by animals that are found in the Cape Canaveral Wildlife Refuge which encompasses Kennedy Space Center and Cape Canaveral Space Force Base. • Tortoise • Manatee • Wild hog • Bobcat • Alligator • T- Rex (not found in the Cape Canaveral Wildlife Refuge)

About

Stack and Sell

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
Read full description

Stack and Sell the addictive casual game where you build towers of colorful boxes and sell them for coins! HOW TO PLAY Tap to drop falling boxes onto your stack. Land them perfectly for bonus coins. Stack as high as you can before missing! UPGRADE YOUR WAREHOUSE Spend coins on 12 different upgrades to make stacking easier and earn more coins. Slow the boxes, widen them, boost your earnings and more! IDLE WORKERS Hire warehouse workers who earn coins for you even while you sleep. Come back to collect your earnings and keep upgrading! FEATURES Simple satisfying one-tap stacking gameplay Sell your stack for coins after every round 12 deep upgrade paths with 40+ levels each Idle worker system earns coins automatically 10 beautiful box themes to unlock and purchase Lucky spin wheel with prizes every 4 hours Daily login bonuses with 7 day streak rewards 30 achievements to unlock and complete Relaxing zen music perfect for unwinding VIP membership for the ultimate experience Remove ads for uninterrupted play THEMES Customize your game with stunning box color themes! From candy pastels to neon cyberpunk to deep space. Each theme transforms the entire game with matching backgrounds and cloud colors. SPIN AND WIN Every 4 hours spin the lucky wheel for bonus coins, shields, multipliers and the legendary jackpot prize! DAILY REWARDS Log in every day to collect increasing rewards. Build a 7 day streak for the biggest bonus of all! Stack and Sell is free to play with optional in-app purchases. Remove ads or grab the VIP pack for the best experience. How high can YOU stack?

Screenshots

3,2,1 Launch!4 screens
Stack and Sell4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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

Scorecard3 real differences · 7 level
3,2,1 Launch! versus Stack and Sell: the parameters behind the verdict, then further details
Parameter3,2,1 Launch!Stack and Sell
PriceFreeFree
Rating5.0 (4 ratings)5.0 (3 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings4 — better3
Update frequencyEvery 13 monthsDaily — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree — betterAd-supported
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size1008 MB123 MB
Age rating4+4+
DeveloperNASABenjamin Nagel

Customer experience

3,2,1 Launch!

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Stack and Sell

Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

3,2,1 Launch!

No in-app purchases

None

Stack and Sell

No in-app purchases

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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