# Assembly Line! vs Cog Hero

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.

Both are free to download. Cog Hero sells 1 one-off in-app purchase. Assembly Line! asks for nothing beyond the download.

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.

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.

## The numbers

| Metric | Assembly Line! | Cog Hero |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.2 (57 ratings)](https://appshunter.io/ios/app/assembly-line/id1339770318/reviews)** | [3.4 (8 ratings)](https://appshunter.io/ios/app/cog-hero/id6444390955/reviews) |
| Number of ratings | **57** | 8 |
| Positive reviews | 61.7% of reviews | **66.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 69 MB | 3 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Joao Reis](https://appshunter.io/developer/1633456295) | [Headlight Software, Inc.](https://appshunter.io/developer/286479939) |

## What reviewers say

### Assembly Line!

[App page](https://appshunter.io/ios/app/assembly-line/id1339770318)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Amazing and addictive game
- 👍 Satisfying factory building
- 🤓 Challenging and strategic
- 🎮 Fun and engaging gameplay

**What reviewers complain about**

- 🐛 Bugs with transporters and multi-selector
- 🔧 Some features not working as expected
- 💰 Unbalanced progression and profitability
- 📱 Compatibility issues with iPhone X

**Reported bugs**

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

**Requested features**

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


### Cog Hero

[App page](https://appshunter.io/ios/app/cog-hero/id6444390955)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Difficulty Levels | $0.99 | one-time |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*