# Reactor Idle Tycoon vs Assembly Line 2

The clearest difference is in-app purchases: Assembly Line 2 at none against Reactor Idle Tycoon's 10. Assembly Line 2 also leads on update cadence (weekly vs every 4 months). Reactor Idle Tycoon's advantage is ratings volume (7.6K vs 1.6K). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Reactor Idle Tycoon sells 10 one-off in-app purchases. Assembly Line 2 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.7 for Reactor Idle Tycoon against 4.8 for Assembly Line 2. Both are backed by a comparable volume of ratings — 7.6K and 1.6K respectively. Written reviews are what separate them: 74% of Reactor Idle Tycoon's written reviews are positive against 80% of Assembly Line 2's.

Reactor Idle Tycoon ships an update every 4 months, Assembly Line 2 weekly. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Reactor Idle Tycoon | Assembly Line 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.7 (7.6K ratings)](https://appshunter.io/ios/app/reactor-idle-tycoon/id1086730643/reviews) | **[4.8 (1.6K ratings)](https://appshunter.io/ios/app/assembly-line-2/id1669722484/reviews)** |
| Number of ratings | **7.6K** | 1.6K |
| Positive reviews | 74.2% of reviews | **79.6% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 131 MB | 138 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robert Grzybek](https://appshunter.io/developer/1016399321) | [Joao Reis](https://appshunter.io/developer/1633456295) |

## What reviewers say

### Reactor Idle Tycoon

[App page](https://appshunter.io/ios/app/reactor-idle-tycoon/id1086730643)

Build and manage your own energy empire, from wind turbines to advanced reactors. Generate electricity, manage heat, and sell power for profit in this engaging idle strategy game. Unlock new maps and technologies to maximize your earnings.

**Highlights:** Build various power generation facilities, Manage heat and stability of reactors, Idle mechanic for offline earnings, Unlockable maps and upgrades, Complex strategy with easy learning curve, Research system for advancements

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Area | $1.99 | one-time |
| Unlock Area 1 | $2.99 | one-time |
| Unlock Area 2 | $2.99 | one-time |
| 20x Tools | $2.99 | one-time |
| Unlock Area 3 | $3.99 | one-time |
| Buy Research Points | $3.99 | one-time |
| Unlock Area 7 | $5.99 | one-time |
| 50x Tools | $5.99 | one-time |
| Unlock Special Map! | $9.99 | one-time |
| Remove banner and get 100% bonus! | $9.99 | one-time |

**What reviewers like**

- 👍 Simple and enjoyable gameplay
- 🚀 Fast progression
- 💡 Unique concept
- 🎨 Appealing graphics

**What reviewers complain about**

- 🕰️ Slow progression at later stages
- 💰 Expensive in-app purchases
- 📢 Intrusive ads
- 🐛 Bugs and glitches

**Reported bugs**

- Money resets to zero
- Research points not properly calculated
- Inconsistent ad rewards

**Requested features**

- More content and upgrades
- Ability to upgrade existing buildings
- Faster removal of trees and mountains
- Offline progress improvements


### Assembly Line 2

[App page](https://appshunter.io/ios/app/assembly-line-2/id1669722484)

Build and manage a factory to craft and sell resources. Optimize your assembly line with various machines and upgrades to maximize profits, even while offline. Discover new resources and make strategic decisions to grow your industrial empire.

**Highlights:** Build and optimize 21 different machines, Unlock tons of upgrades, Craft around 50 unique resources, Offline progress generation, Informative machine and resource data, Progress backup

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Fun gameplay
- 👍 Optional ads
- 🎨 Good visuals
- 🕹️ Engaging factory management

**What reviewers complain about**

- 🐛 Clunky controls
- 🔋 Battery drain issues
- 🧭 Unclear progression
- 🧠 Tedious menu navigation

**Reported bugs**

- Inconsistent offline earnings
- Crafters and splitters stop working
- Crashes on launch

**Requested features**

- Copy/paste assembly lines
- Rotate/flip multiple machines
- Pause production
- Better performance optimization


## Frequently asked questions

### Is Reactor Idle Tycoon free?

Reactor Idle Tycoon is free to download, with in-app purchases available.

### Is Assembly Line 2 free?

Assembly Line 2 is free to download, with no in-app purchases.

### Which has better reviews, Reactor Idle Tycoon or Assembly Line 2?

Assembly Line 2 is rated higher. Reactor Idle Tycoon averages 4.7 out of 5 from 7.6K ratings, while Assembly Line 2 averages 4.8 from 1.6K ratings.

### Do Reactor Idle Tycoon or Assembly Line 2 have ads?

Both Reactor Idle Tycoon and Assembly Line 2 show ads.

### Which is updated more often, Reactor Idle Tycoon or Assembly Line 2?

Reactor Idle Tycoon ships an update every 4 months, and Assembly Line 2 weekly. Most recently, Reactor Idle Tycoon was updated on October 26, 2026 and Assembly Line 2 on October 27, 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.*