# Chain Factory vs Piston Stack Run

The clearest difference is rating: Piston Stack Run at 4.5 against Chain Factory's 3.8. Piston Stack Run also leads on ratings volume (12 vs 4). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Piston Stack Run holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 4 and 12 respectively.

Chain Factory ships an update every 2 weeks, Piston Stack Run every 10 days. The most recent releases landed on September 9, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | Chain Factory | Piston Stack Run |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/chain-factory/id1660645850/reviews) | **[4.5 (12 ratings)](https://appshunter.io/ios/app/piston-stack-run/id6450260988/reviews)** |
| Number of ratings | 4 | **12** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 weeks | **Every 10 days** |
| Monetization | Ad-supported | Ad-supported |
| Size | 170 MB | 252 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [NEVERENDING GAMES LLC](https://appshunter.io/developer/1507989689) | [Ela Game](https://appshunter.io/developer/1536955498) |

## What reviewers say

### Chain Factory

[App page](https://appshunter.io/ios/app/chain-factory/id1660645850)

Create your own unique chains from various materials. Watch your creation grow and sell it for increasing rewards. This game offers a relaxing and satisfying experience with simple tap controls.

**Highlights:** Create custom chains, Sell chains for rewards, Relaxing gameplay, Easy tap controls, Satisfactory process

**Features:** macOS Compatibility

**In-app purchases:** none


### Piston Stack Run

[App page](https://appshunter.io/ios/app/piston-stack-run/id6450260988)

Aim and shoot knots at targets, then transform into a powerful drill to conquer screw-drilling challenges. Master fire rate and range gates to advance and unlock new levels. Experience stunning visuals and an engaging storyline in this action-packed game.

**Highlights:** Precision knot shooting, Screw drilling challenges, Unlockable levels and opponents, Fire rate and range gate mechanics, Stunning visuals and sound effects, Engaging storyline

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Chain Factory free?

Chain Factory is free to download, with no in-app purchases.

### Is Piston Stack Run free?

Piston Stack Run is free to download, with no in-app purchases.

### Which has better reviews, Chain Factory or Piston Stack Run?

Piston Stack Run is rated higher. Chain Factory averages 3.8 out of 5 from 4 ratings, while Piston Stack Run averages 4.5 from 12 ratings.

### Do Chain Factory or Piston Stack Run have ads?

Both Chain Factory and Piston Stack Run show ads.

### Which is updated more often, Chain Factory or Piston Stack Run?

Chain Factory ships an update every 2 weeks, and Piston Stack Run every 10 days. Most recently, Chain Factory was updated on September 9, 2026 and Piston Stack Run on September 15, 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.*