Comparison

Robot Factory vs Stack Attack!!

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

Head to head
About

Robot Factory

Merge and upgrade futuristic robots and transformers in a bustling factory. Build a powerful mecha army, collect coins, and dominate the battlefield with classic clicker and merge mechanics. Defend your empire and conquer foes in this sci-fi idle adventure.

Highlights
  • Mecha Fusion and Upgrades
  • Robots Factory Management
  • Collect Coins and Craft
  • Strategic Battlefield Defense
  • Idle Game Mechanics
  • Sci-Fi Robot Warfare
Features
Read full description

Step into the futuristic Robot Factory and witness the magic of Mecha Fusion! Craft, merge, and upgrade your mechas and transformers in this merge clicker game set within a bustling robots factory. Build an empire of high-tech robots, and strengthen your arsenal as you embark on an epic merge adventure. Collect coins, master robots, and dominate the battlefield with classic clicker and merge mechanics. Key Features: Mecha Fusion Marvel: Explore the art of Mecha Fusion and merge same-level robots to unlock powerful mechs! Robots Factory Hub: Manage a cutting-edge factory, merging robots, transformers, and crafting tanks. High-Tech Robotics: Merge high-tech robots and tower above the competition in this robot merge clicker game. Tanks Factory Domination: Merge robots for an impenetrable defense and strategic dominance on the battlefield. Strengthen Your Arsenal: Collect coins, upgrade your mechas, and become the ultimate master of robotic warfare. Epic Merge Quest: Experience the epic merge journey with captivating clicker empire and merge games. Sci-Fi Idle Wonderland: Immerse yourself in the world of sci-fi idle games, mechs, and futuristic robots. Defend Your Empire: Strategically merge and place your mechas to protect your land from enemies. Clicker Triumph: Rise to the top with classic clicker and rate multipliers in an merge clicker empire. Collect and Craft: Click, merge, and collect coins to craft the most formidable mecha army. Grow Your Army: Merge, upgrade, and build a powerful army to conquer foes in this merge and clicker game. Transformative Gameplay: Merge transformers, tanks, and robots in a traditional clicker style. Idle Advancements: Enjoy idle games mechanics and earn offline earnings to enhance your empire. Protect Your Land: Merge and place your creations strategically to defend your territory in this idle clicker. Download Robot Factory: Merge Mecha now and experience the ultimate merge game! Craft, upgrade, and dominate the battlefield with your powerful mecha army in this immersive idle merge clicker geme.

About

Stack Attack!!

Engage in intense battles against waves of enemies, strategically demolishing their formations with powerful weapons. Upgrade your capabilities by selecting the best skills to protect the cube world from a malevolent hex invasion.

Highlights
  • Defeat enemy waves
  • Demolish enemy stacks
  • Upgrade skills
  • Save the cube world
  • Space invader gameplay
Features
Read full description

Defeat waves of enemies! Use your weapons to demolish the enemies' stacks! Choose the best skills to upgrade your power! Save the cube world from the evil hexes!

Screenshots

Robot Factory4 screens
Stack Attack!!4 screens

Verdict

The call

The clearest difference is ads: Robot Factory at none against Stack Attack!!'s shown. Stack Attack!!'s advantage is update cadence (every 2 weeks vs every 15 months) and ratings volume (399 vs 7). On price, rating, in-app purchases and monetization model 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. Robot Factory sells 9 one-off in-app purchases and Stack Attack!! sells 19 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.4 for Robot Factory against 4.3 for Stack Attack!!. That said, the two scores are not equally well evidenced: Stack Attack!! has 399 ratings behind it against 7, so its average is the more settled of the two.

UpkeepUpdate frequency

Robot Factory ships an update every 15 months, Stack Attack!! every 2 weeks. The most recent releases landed on October 29, 2026 and October 22, 2026 respectively.

Scorecard3 real differences · 7 level
Robot Factory versus Stack Attack!!: the parameters behind the verdict, then further details
ParameterRobot FactoryStack Attack!!
PriceFreeFree
Rating4.4 (7 ratings) — better4.3 (399 ratings)
Positive reviews—23.2% of reviews
Number of ratings7399 — better
Update frequencyEvery 15 monthsEvery 2 weeks — better
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.014.0 — better
Further details — not scored
Size89 MB247 MB
Age rating4+12+
DeveloperBohdan SavchenkoVoodoo

Customer experience

Robot Factory

All ratings7 ratings
Positive85.7%
Neutral0.0%
Negative14.3%

Stack Attack!!

All ratings403 ratings
Positive82.6%
Neutral4.2%
Negative13.2%
Written reviews155 reviews
Positive23.2%
Neutral13.5%
Negative63.2%

Bugs and requests

Robot Factory

Not enough reviews yet to summarise bugs or requests.

Stack Attack!!

Reported bugs

3 issues
  • Enemies' health scaling with player's attack power
  • Levels freezing or getting stuck at checkpoints
  • Weapon and upgrade levels getting downgraded randomly

Requested features

3 requests
  • Mute sound effects option
  • Better communication from developers about updates
  • More content and stages to progress through

In-app purchases

9 purchases

Robot Factory

One-time9
  • 60 Gems$0.99
  • 150 Gems$1.99
  • Special offer 2$1.99
Show 6 more
  • Remove all ads$2.99
  • 400 Gems$2.99
  • Special Offer$4.99
  • 1000 Gems$4.99
  • 3000 Gems$6.99
  • 10000 Gems$12.99
19 purchases

Stack Attack!!

One-time19
  • Gem Pack Small$0.99
  • Gold Pack Small$0.99
  • Starter Pack$2.99
Show 16 more
  • No Ads$2.99
  • Gem Pack Medium$4.99
  • 2X Speed!$4.99
  • Gold Pack Medium$4.99
  • Skip'its Medium Pack$5.99
  • Gem Pack Large$9.99
  • Gold Pack Large$9.99
  • Premium Pass$14.99
  • Gem Pack XL$19.99
  • Skip'its Large Pack$19.99
  • Gold Pack XL$19.99
  • Diamond Hero$29.99
  • Gem Pack XXL$49.99
  • Gold Pack XXL$49.99
  • Gem Pack XXXL$99.99
  • Gold Pack XXXL$99.99

Questions

Is Robot Factory free?
Robot Factory is free to download, with in-app purchases available.
Is Stack Attack!! free?
Stack Attack!! is free to download, with in-app purchases available.
Which has better reviews, Robot Factory or Stack Attack!!?
Robot Factory is rated higher. Robot Factory averages 4.4 out of 5 from 7 ratings, while Stack Attack!! averages 4.3 from 399 ratings.
Do Robot Factory or Stack Attack!! have ads?
Stack Attack!! shows ads; Robot Factory does not.
Which is updated more often, Robot Factory or Stack Attack!!?
Robot Factory ships an update every 15 months, and Stack Attack!! every 2 weeks. Most recently, Robot Factory was updated on October 29, 2026 and Stack Attack!! on October 22, 2026.

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