# Critical vs IdleSpiral

Critical and IdleSpiral both sit at 4.4 stars, but that hides the real split: 57% of IdleSpiral's written reviews are positive against 18% of Critical's. IdleSpiral also leads on update cadence (every 2 days vs fortnightly). Critical's advantage is iOS requirement (12.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Critical sells 17 one-off in-app purchases and IdleSpiral sells 12 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for Critical against 4.3 for IdleSpiral. Both are backed by a comparable volume of ratings — 125 and 77 respectively. Written reviews are what separate them: 18% of Critical's written reviews are positive against 57% of IdleSpiral's.

Critical ships an update fortnightly, IdleSpiral every 2 days. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Critical | IdleSpiral |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (125 ratings)](https://appshunter.io/ios/app/critical-incremental-reactor/id6446354857/reviews)** | [4.3 (77 ratings)](https://appshunter.io/ios/app/idlespiral/id6476647541/reviews) |
| Number of ratings | **125** | 77 |
| Positive reviews | 18.2% of reviews | **56.8% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 99 MB | 230 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WaffleStack Studio LLC](https://appshunter.io/developer/1523413949) | [Idle System, Inc.](https://appshunter.io/developer/1727483319) |

## What reviewers say

### 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 |


### IdleSpiral

[App page](https://appshunter.io/ios/app/idlespiral/id6476647541)

An idle, incremental game where players aim to grow a spiral. It combines simple gameplay with mathematical beauty for long-term engagement.

**Highlights:** Idle gameplay, Incremental progression, Spiral mathematics, Long-term engagement, Simple mechanics

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spiral Point 500 | $1.99 | one-time |
| Snake Spiral | $4.99 | one-time |
| Bubble Spiral | $4.99 | one-time |
| Arrow Spiral | $4.99 | one-time |
| Water Spiral | $9.99 | one-time |
| Space Spiral | $9.99 | one-time |
| Bonfire  Spiral | $9.99 | one-time |
| Permanent Bonus | $9.99 | one-time |
| Pixel Spiral | $9.99 | one-time |
| Railway Spiral | $9.99 | one-time |
| Spiral Point 3000 | $12.99 | one-time |
| Spiral Point 10000 | $29.99 | one-time |


## Frequently asked questions

### Is Critical free?

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

### Is IdleSpiral free?

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

### Which has better reviews, Critical or IdleSpiral?

Critical is rated higher. Critical averages 4.4 out of 5 from 125 ratings, while IdleSpiral averages 4.3 from 77 ratings.

### Do Critical or IdleSpiral have ads?

Both Critical and IdleSpiral show ads.

### Which is updated more often, Critical or IdleSpiral?

Critical ships an update fortnightly, and IdleSpiral every 2 days. Most recently, Critical was updated on September 22, 2026 and IdleSpiral on September 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.*