# Cosmic Mechanic vs Poly Bridge 3

The clearest difference is price: Poly Bridge 3 at Free against Cosmic Mechanic's $0.99. Poly Bridge 3 also leads on update cadence (every 4 days vs every 9 months) and ratings volume (135 vs 5). Cosmic Mechanic's advantage is rating (5.0 vs 3.9) and review sentiment (100% vs 65%). On ads and device support there is nothing between them.

Poly Bridge 3 is free to download; Cosmic Mechanic costs $0.99 up front. Poly Bridge 3 sells 1 one-off in-app purchase. Cosmic Mechanic asks for nothing beyond the download.

Cosmic Mechanic holds the better App Store score, 5.0 against 3.9. That said, the two scores are not equally well evidenced: Poly Bridge 3 has 135 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 100% of Cosmic Mechanic's written reviews are positive against 65% of Poly Bridge 3's.

Cosmic Mechanic ships an update every 9 months, Poly Bridge 3 every 4 days. The most recent releases landed on October 23, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Cosmic Mechanic | Poly Bridge 3 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/cosmic-mechanic/id606118389/reviews)** | [3.9 (135 ratings)](https://appshunter.io/ios/app/poly-bridge-3/id1586851637/reviews) |
| Number of ratings | 5 | **135** |
| Positive reviews | **100.0% of reviews** | 65.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 62 MB | 492 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Kimmo Factor Oy](https://appshunter.io/developer/491318781) | [Dry Cactus](https://appshunter.io/developer/1197552567) |

## What reviewers say

### Cosmic Mechanic

[App page](https://appshunter.io/ios/app/cosmic-mechanic/id606118389)

Engineer vehicles from found parts to navigate alien portals and return home. This game offers over 50 levels with multiple gameplay modes and numerous parts for creative problem-solving.

**Highlights:** Vehicle engineering, Alien portal navigation, Over 50 levels, Multiple gameplay modes, Creative contraption building

**In-app purchases:** none


### Poly Bridge 3

[App page](https://appshunter.io/ios/app/poly-bridge-3/id1586851637)

A physics-based puzzle game where you design and build bridges to guide vehicles to their destinations. Explore diverse levels, experiment with different bridge types, and test your engineering creativity in open-world and sandbox modes.

**Highlights:** Build various bridge types, Physics-based simulation, Open World Campaign, Sandbox mode for creativity, Leaderboards and player gallery, Custom physics engine

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All | $4.99 | one-time |

**What reviewers like**

- 👍 Fun and engaging gameplay
- 🧠 Challenging and makes you feel like an engineer
- ✨ Great physics
- 😌 Relaxing and pure fun
- 📱 Good for mobile

**What reviewers complain about**

- 🐛 Game-breaking bug with hydraulics
- 🔇 No audio in silent mode
- ⭐ Unclear requirement to get stars
- 🧰 Limits creativity and bad snapping
- 💸 Paid full game after free trial

**Reported bugs**

- Game breaking bug where hydraulics won’t pull asphalt apart
- No audio when in silent mode
- No audio
- Game kept bugging, wouldn’t let me place anything in the sandbox
- Game Center can’t reconnect after reinstalling

**Requested features**

- Turn off silent mode to hear game audio
- Add workshop and ability to share bridges
- Bring weekly mode to iOS
- Allow players to upload levels for others to play
- Add an Olympics mode


## Frequently asked questions

### Is Cosmic Mechanic free?

Cosmic Mechanic costs $0.99, with no in-app purchases.

### Is Poly Bridge 3 free?

Poly Bridge 3 is free to download, with in-app purchases available.

### Which has better reviews, Cosmic Mechanic or Poly Bridge 3?

Cosmic Mechanic is rated higher. Cosmic Mechanic averages 5.0 out of 5 from 5 ratings, while Poly Bridge 3 averages 3.9 from 135 ratings.

### Do Cosmic Mechanic or Poly Bridge 3 have ads?

Neither Cosmic Mechanic nor Poly Bridge 3 shows ads.

### Which is updated more often, Cosmic Mechanic or Poly Bridge 3?

Cosmic Mechanic ships an update every 9 months, and Poly Bridge 3 every 4 days. Most recently, Cosmic Mechanic was updated on October 23, 2026 and Poly Bridge 3 on October 30, 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.*