# Wool Jam vs Screw Machine

Wool Jam and Screw Machine both sit at 4.8 stars, but that hides the real split: 100% of Wool Jam's written reviews are positive against 50% of Screw Machine's. Wool Jam also leads on monetization model (ad-supported vs free with in-app purchases). Screw Machine's advantage is update cadence (every 4 days vs fortnightly). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Wool Jam sells 10 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.

On the App Store both sit at effectively the same score — 4.8 for Wool Jam against 4.9 for Screw Machine. Both are backed by a comparable volume of ratings — 292 and 445 respectively. Written reviews are what separate them: 100% of Wool Jam's written reviews are positive against 50% of Screw Machine's.

Wool Jam ships an update fortnightly, Screw Machine every 4 days. The most recent releases landed on October 18, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | Wool Jam | Screw Machine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (292 ratings)](https://appshunter.io/ios/app/wool-jam-yarn-loop-puzzle/id6787925312/reviews) | **[4.9 (445 ratings)](https://appshunter.io/ios/app/screw-machine/id6801033982/reviews)** |
| Number of ratings | 292 | **445** |
| Positive reviews | **100.0% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Fortnightly | **Every 4 days** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 280 MB | 368 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [UNICO STUDIO](https://appshunter.io/developer/1467451326) | [Twist Games](https://appshunter.io/developer/1854442218) |

## What reviewers say

### Wool Jam

[App page](https://appshunter.io/ios/app/wool-jam-yarn-loop-puzzle/id6787925312)

Unravel colorful yarn balls, manage a spinning loop, and knit beautiful patchwork patterns. Solve relaxing logic puzzles by matching yarn colors to create adorable designs. Avoid getting stuck and use powerful boosters to overcome challenging levels.

**Highlights:** Unravel and match colorful yarn, Manage spinning yarn loop, Knit patchwork patterns, Solve logic puzzles, Overcome unique obstacles, Use powerful boosters

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $0.99 | one-time |
| 1000 Coin | $1.99 | one-time |
| Coin Offer | $2.49 | one-time |
| PiggyBank | $2.99 | one-time |
| 5000 Coin | $4.49 | one-time |
| Fail Offer | $4.99 | one-time |
| 1Plus2 | $6.49 | one-time |
| Big Bundle | $7.99 | one-time |
| 10000 Coin | $8.49 | one-time |
| No ADs Pack | $12.99 | 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 Wool Jam free?

Wool Jam 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, Wool Jam or Screw Machine?

Screw Machine is rated higher. Wool Jam averages 4.8 out of 5 from 292 ratings, while Screw Machine averages 4.9 from 445 ratings.

### Do Wool Jam or Screw Machine have ads?

Both Wool Jam and Screw Machine show ads.

### Which is updated more often, Wool Jam or Screw Machine?

Wool Jam ships an update fortnightly, and Screw Machine every 4 days. Most recently, Wool Jam was updated on October 18, 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.*