# Reactor Idle Tycoon vs Critical

The clearest difference is review sentiment: Reactor Idle Tycoon at 78% against Critical's 18%. Reactor Idle Tycoon also leads on rating (4.7 vs 4.4) and ratings volume (7.6K vs 147). Critical's advantage is update cadence (fortnightly vs every 4 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Reactor Idle Tycoon sells 10 one-off in-app purchases and Critical sells 17 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Reactor Idle Tycoon holds the better App Store score, 4.7 against 4.4. That said, the two scores are not equally well evidenced: Reactor Idle Tycoon has 7.6K ratings behind it against 147, so its average is the more settled of the two. Written reviews point the same way: 78% of Reactor Idle Tycoon's written reviews are positive against 18% of Critical's.

Reactor Idle Tycoon ships an update every 4 months, Critical fortnightly. The most recent releases landed on October 30, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Reactor Idle Tycoon | Critical |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (7.6K ratings)](https://appshunter.io/ios/app/reactor-idle-tycoon/id1086730643/reviews)** | [4.4 (147 ratings)](https://appshunter.io/ios/app/critical-incremental-reactor/id6446354857/reviews) |
| Number of ratings | **7.6K** | 147 |
| Positive reviews | **77.8% of reviews** | 18.2% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Fortnightly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 131 MB | 99 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Robert Grzybek](https://appshunter.io/developer/1016399321) | [WaffleStack Studio LLC](https://appshunter.io/developer/1523413949) |

## 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


### Critical

[App page](https://appshunter.io/ios/app/critical-incremental-reactor/id6446354857)

Manage a reactor to prevent it from becoming critical by delivering water. Earn money over time to unlock permanent upgrades and improve your survival capabilities. Invest wisely to extend your runs and uncover secrets.

**Highlights:** Reactor management, Incremental income generation, Permanent upgrades, Research and secrets, Survival gameplay

**Features:** macOS Compatibility

**In-app purchases (17)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Gems | $2.99 | one-time |
| 100 Gems | $4.99 | one-time |
| Remove Ads | $7.99 | one-time |
| 225 Gems | $7.99 | one-time |
| Starter Pack | $9.99 | one-time |
| Remove All Ads | $9.99 | one-time |
| 225 Gems | $9.99 | one-time |
| 500 Gems | $9.99 | one-time |
| Pro Pack | $9.99 | one-time |
| Pro Pack | $14.99 | one-time |
| New Player Sale | $14.99 | one-time |
| 500 Gems | $14.99 | one-time |
| 1400 Gems | $19.99 | one-time |
| 800 Gems | $19.99 | one-time |
| 1400 Gems | $29.99 | one-time |
| 3000 Gems | $29.99 | one-time |
| 3000 Gems | $39.99 | one-time |


## Frequently asked questions

### Is Reactor Idle Tycoon free?

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

### Is Critical free?

Critical is free to download, with in-app purchases available.

### Which has better reviews, Reactor Idle Tycoon or Critical?

Reactor Idle Tycoon is rated higher. Reactor Idle Tycoon averages 4.7 out of 5 from 7.6K ratings, while Critical averages 4.4 from 147 ratings.

### Do Reactor Idle Tycoon or Critical have ads?

Both Reactor Idle Tycoon and Critical show ads.

### Which is updated more often, Reactor Idle Tycoon or Critical?

Reactor Idle Tycoon ships an update every 4 months, and Critical fortnightly. Most recently, Reactor Idle Tycoon was updated on October 30, 2026 and Critical on October 21, 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.*