# Circle Sort vs Screw Machine

The clearest difference is rating: Screw Machine at 4.9 against Circle Sort's 3.9. Screw Machine also leads on update cadence (every 4 days vs monthly) and ratings volume (445 vs 8). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Circle Sort sells 6 one-off in-app purchases and Screw Machine sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Screw Machine holds the better App Store score, 4.9 against 3.9. That said, the two scores are not equally well evidenced: Screw Machine has 445 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 33% of Circle Sort's written reviews are positive against 50% of Screw Machine's.

Circle Sort ships an update monthly, Screw Machine every 4 days. The most recent releases landed on October 11, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Circle Sort | Screw Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (8 ratings)](https://appshunter.io/ios/app/circle-sort-ring-puzzle/id6743114220/reviews) | **[4.9 (445 ratings)](https://appshunter.io/ios/app/screw-machine/id6801033982/reviews)** |
| Number of ratings | 8 | **445** |
| Positive reviews | 33.3% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 4 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 256 MB | 368 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Game5mobile](https://appshunter.io/developer/1281867139) | [Twist Games](https://appshunter.io/developer/1854442218) |

## What reviewers say

### Circle Sort

[App page](https://appshunter.io/ios/app/circle-sort-ring-puzzle/id6743114220)

A physics-based puzzle game where players match ring colors to clear the board. Strategically drop circles to complete objectives, but avoid hitting the line to prevent a game over.

**Highlights:** Physics-based gameplay, Color matching mechanics, Strategic circle placement, Level-based objectives, Risk/reward gameplay

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 100 Coins | $0.99 | one-time |
| 500 Coins | $6.99 | one-time |
| 1000 Coins | $14.99 | one-time |
| 5000 Coins | $24.99 | one-time |
| 10000 Coins | $49.99 | one-time |
| 15000 Coins | $99.99 | one-time |


### Screw Machine

[App page](https://appshunter.io/ios/app/screw-machine/id6801033982)

A unique color-sorting puzzle game where you manage screws on a spinning machine. Tap panels to release screws and match them to their colored plates before the rail overloads. Features special mechanics like mystery plates and gates for added challenge.

**Highlights:** Spinning machine sorting mechanic, Color-matching screw puzzles, Tap-to-release screw panels, Special game-changing parts (mystery plates, gates), Offline play, No timer or move counter

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1000 Coins | $1.99 | one-time |
| Fail Offer | $4.99 | one-time |
| 5000 Coins | $7.99 | one-time |
| No Ads | $7.99 | one-time |
| Small Bundle | $9.99 | one-time |
| No Ads Bundle | $12.99 | one-time |
| 10000 Coins | $14.99 | one-time |
| Medium Bundle | $19.99 | one-time |
| Large Bundle | $29.99 | one-time |
| Mega Bundle | $49.99 | one-time |


## Frequently asked questions

### Is Circle Sort free?

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

### Is Screw Machine free?

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

### Which has better reviews, Circle Sort or Screw Machine?

Screw Machine is rated higher. Circle Sort averages 3.9 out of 5 from 8 ratings, while Screw Machine averages 4.9 from 445 ratings.

### Do Circle Sort or Screw Machine have ads?

Both Circle Sort and Screw Machine show ads.

### Which is updated more often, Circle Sort or Screw Machine?

Circle Sort ships an update monthly, and Screw Machine every 4 days. Most recently, Circle Sort was updated on October 11, 2026 and Screw Machine on October 17, 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.*