# USB Simulator 2015 vs circloO

The clearest difference is review sentiment: circloO at 89% against USB Simulator 2015's 37%. circloO also leads on rating (4.8 vs 3.3) and update cadence (every 2 months vs every 11 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. USB Simulator 2015 sells 2 one-off in-app purchases and circloO sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

circloO holds the better App Store score, 4.8 against 3.3. That said, the two scores are not equally well evidenced: circloO has 2.4K ratings behind it against 49, so its average is the more settled of the two. Written reviews point the same way: 37% of USB Simulator 2015's written reviews are positive against 89% of circloO's.

USB Simulator 2015 ships an update every 11 months, circloO every 2 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | USB Simulator 2015 | circloO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (49 ratings)](https://appshunter.io/ios/app/usb-simulator-2015/id955579995/reviews) | **[4.8 (2.4K ratings)](https://appshunter.io/ios/app/circloo-physics-platformer/id1612957699/reviews)** |
| Number of ratings | 49 | **2.4K** |
| Positive reviews | 36.6% of reviews | **89.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 93 MB | 63 MB |
| Requires iOS | 15.0 | **10** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fluik](https://appshunter.io/developer/341885018) | [Florian van Strien](https://appshunter.io/developer/1603079263) |

## What reviewers say

### USB Simulator 2015

[App page](https://appshunter.io/ios/app/usb-simulator-2015/id955579995)

Experience the frustratingly familiar challenge of inserting a USB stick. Test your patience and dexterity to master this common task. Compete with friends for high scores and achievements in this unique simulation game.

**Highlights:** Master USB insertion, Patience and dexterity challenge, Compete for high scores, Unlock achievements, Challenge friends

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Gold USB | $0.99 | one-time |
| No Ads | $0.99 | one-time |


### circloO

[App page](https://appshunter.io/ios/app/circloo-physics-platformer/id1612957699)

A colorful physics platformer where you guide a ball through growing circular levels. Collect circles to expand the play area, strategically using and avoiding obstacles. Discover unique physics mechanics and enjoy a vast collection of player-created levels.

**Highlights:** Circular physics puzzles, Level editor, Player-created levels, Unique physics mechanics, Growing levels, Hard Mode levels

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |

**What reviewers like**

- 👍 Relaxing and enjoyable gameplay
- 🎨 Creative and unique levels
- 🎶 Calming background music
- 🧠 Challenging but not impossible
- 🕹️ Smooth and responsive controls

**What reviewers complain about**

- 🔍 Occasional performance issues
- 🕹️ Difficulty can be inconsistent
- 📺 Ads can be disruptive at times
- 🤑 Lack of free content/levels

**Reported bugs**

- Glitches with level progression
- Inconsistent touch/click registration

**Requested features**

- More levels and content updates
- Character customization options
- Improved level editor tools
- Difficulty settings or options


## Frequently asked questions

### Is USB Simulator 2015 free?

USB Simulator 2015 is free to download, with in-app purchases available.

### Is circloO free?

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

### Which has better reviews, USB Simulator 2015 or circloO?

circloO is rated higher. USB Simulator 2015 averages 3.3 out of 5 from 49 ratings, while circloO averages 4.8 from 2.4K ratings.

### Do USB Simulator 2015 or circloO have ads?

Both USB Simulator 2015 and circloO show ads.

### Which is updated more often, USB Simulator 2015 or circloO?

USB Simulator 2015 ships an update every 11 months, and circloO every 2 months. Most recently, USB Simulator 2015 was updated on September 30, 2026 and circloO on October 2, 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.*