Comparison

Assembly Line! vs Cog Hero

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

Head to head
About

Assembly Line!

Build and manage an efficient assembly line to maximize profits. This idle tycoon game features strategic machine placement and resource management. Earn money even when offline and unlock upgrades to become a wealthy industrialist.

Highlights
  • Build and manage assembly lines
  • Strategic machine placement
  • Resource crafting and selling
  • Offline revenue generation
  • Machine and resource information
  • Over 50 resources and 18 machines
Features
Read full description

Assembly Line - Build and manage your assembly line! Assembly Line combines elements from idle and tycoon games. You need to build the best assembly line in order to have the most profit possible. There're different types of machines that will help you achieve that, but you must use them strategically. Become rich as you build the best assembly line ever! The plan is simple: Build resources and then sell them. Start with the initial machine and create basics resources, and use more advanced machines to craft and create more complex resources. When you go offline the machines will keep working and still generate revenue, so when you come back you will have a pile of money to swim on it. Just like Scrooge Mcduck! :) It is only up to you how much you can make, Assembly Line is an idle game, but with the combination of tycoon and strategy elements you have a lot of choices in how you will make money. Assembly Line also offers you an information menu, where you can read information about each individual machine and resource to make the best decision on how you will set up your line. Features: • 18 different machines that will help you manage your assembly line! • More than 50 different resources to make and sell! • 20+ upgrades that will increase your profit! • Buy different assembly lines, to increase your revenue! • Earn money even when offline! • Become rich as you build and manage the best assembly line! • Not internet required.

About

Cog Hero

A puzzle game where you make gears spin by tapping and moving them. Stacked gears turn if their colors match neighbors, and different colors can overlap. Unlock new color schemes and enjoy infinite replays with random levels.

Highlights
  • Gear rotation puzzles
  • Color matching mechanics
  • One-way gear challenges
  • Unlockable color schemes
  • Randomly generated levels
  • Offline play
Features
Read full description

A board full of Gears. Can you make them all turn? Tap to select, then tap to move. Stacked gears turn if either of the colors match their neighbor. Different colors can overlap and spin. One-way gears can't be moved. Use others to connect and spin them. Win to unlock more color schemes. Random levels for infinite replays. No ads. No WiFi needed. Play Easy as much as you want, upgrade for higher difficulty levels!

Screenshots

Assembly Line!4 screens
Cog Hero4 screens

Verdict

The call

The clearest difference is rating: Assembly Line! at 4.2 against Cog Hero's 3.4. Assembly Line! also leads on in-app purchases (none vs 1) and update cadence (every 2 months vs every 12 months). On price, review sentiment, ads and device support 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. Cog Hero sells 1 one-off in-app purchase. Assembly Line! asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Assembly Line! holds the better App Store score, 4.2 against 3.4. That said, the two scores are not equally well evidenced: Assembly Line! has 57 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 62% of Assembly Line!'s written reviews are positive against 67% of Cog Hero's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Assembly Line! ships an update every 2 months, Cog Hero every 12 months. The most recent releases landed on August 18, 2026 and August 20, 2026 respectively.

Scorecard5 real differences · 5 level
Assembly Line! versus Cog Hero: the parameters behind the verdict, then further details
ParameterAssembly Line!Cog Hero
PriceFreeFree
Rating4.2 (57 ratings) — better3.4 (8 ratings)
Positive reviews61.7% of reviews66.7% of reviews — better
Number of ratings57 — better8
Update frequencyEvery 2 months — betterEvery 12 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.0
Further details — not scored
Size69 MB3 MB
Age rating4+4+
DeveloperJoao ReisHeadlight Software, Inc.

Customer experience

Assembly Line!

All ratings57 ratings
Positive82.5%
Neutral0.0%
Negative17.5%
Written reviews128 reviews
Positive61.7%
Neutral14.1%
Negative24.2%

Cog Hero

All ratings8 ratings
Positive50.0%
Neutral25.0%
Negative25.0%
Written reviews9 reviews
Positive66.7%
Neutral0.0%
Negative33.3%

Bugs and requests

Assembly Line!

Reported bugs

4 issues
  • Transporter menu not closing
  • Filtered robotic arm not working properly
  • Machines resetting after closing the app
  • Offline earnings not properly credited

Requested features

4 requests
  • Copy and paste functionality
  • More blueprints and production options
  • Improved offline earnings calculation
  • Better UI and number display for high values

Cog Hero

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Assembly Line!

No in-app purchases

1 purchases

Cog Hero

One-time1
  • Unlock All Difficulty Levels$0.99

Questions

Is Assembly Line! free?
Assembly Line! is free to download, with no in-app purchases.
Is Cog Hero free?
Cog Hero is free to download, with in-app purchases available.
Which has better reviews, Assembly Line! or Cog Hero?
Assembly Line! is rated higher. Assembly Line! averages 4.2 out of 5 from 57 ratings, while Cog Hero averages 3.4 from 8 ratings.
Do Assembly Line! or Cog Hero have ads?
Neither Assembly Line! nor Cog Hero shows ads.
Which is updated more often, Assembly Line! or Cog Hero?
Assembly Line! ships an update every 2 months, and Cog Hero every 12 months. Most recently, Assembly Line! was updated on August 18, 2026 and Cog Hero on August 20, 2026.

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