# Circuit Design 3D Simulator vs Screw Guru

The clearest difference is review sentiment: Circuit Design 3D Simulator at 42% against Screw Guru's 14%. Circuit Design 3D Simulator also leads on iOS requirement (12.0 vs 15.0). Screw Guru's advantage is rating (4.3 vs 3.9) and update cadence (every 3 weeks vs every 4 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Circuit Design 3D Simulator sells 3 one-off in-app purchases and Screw Guru sells 33 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Screw Guru holds the better App Store score, 4.3 against 3.9. That said, the two scores are not equally well evidenced: Screw Guru has 6.4K ratings behind it against 205, so its average is the more settled of the two. Written reviews complicate that: 42% of Circuit Design 3D Simulator's written reviews are positive against 14% of Screw Guru's, so the app with the better star average is not the one people write more warmly about.

Circuit Design 3D Simulator ships an update every 4 months, Screw Guru every 3 weeks. The most recent releases landed on October 30, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Circuit Design 3D Simulator | Screw Guru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.9 (205 ratings)](https://appshunter.io/ios/app/circuit-design-3d-simulator/id6447177915/reviews) | **[4.3 (6.4K ratings)](https://appshunter.io/ios/app/screw-guru/id6737529244/reviews)** |
| Number of ratings | 205 | **6.4K** |
| Positive reviews | **42.4% of reviews** | 13.6% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 137 MB | 324 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [KUNHAR GAMES LTD](https://appshunter.io/developer/1613476123) | [SUPERSONIC STUDIOS LTD](https://appshunter.io/developer/1499845738) |

## What reviewers say

### Circuit Design 3D Simulator

[App page](https://appshunter.io/ios/app/circuit-design-3d-simulator/id6447177915)

Design and test electronic circuits in a virtual simulation game. Fulfill customer orders by selecting components, building circuits on a virtual breadboard, and testing them with real-time feedback and analysis tools. Improve your problem-solving skills while learning about electronics.

**Highlights:** Virtual circuit design and testing, Real-time simulation feedback, Drag-and-drop component placement, Variety of electronic components, Circuit analysis tools (oscilloscope, voltmeter), Multiple game modes (free play, challenges)

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy 500 Coins | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |
| Buy 1500 Coins | $2.99 | one-time |

**What reviewers like**

- 💡 Great concept for beginners
- 💡 Good for learning basics
- 💡 Cool concept
- 💡 Nice
- 💡 Awesome

**What reviewers complain about**

- 😠 Ads Galore
- 😠 Half game half ads
- 😠 Adverts drive you mad
- 😠 Not worth time
- 😠 Sooooooooooooooooooooooooooooooooooooo many ads!!!!!

**Reported bugs**

- Parts are mislabeled
- Resistors are incorrectly called transistors
- The very first challenge shows a resistor as a transistor
- Buggy
- Looks terrible

**Requested features**

- Add a way to create your own circuit
- Free play mode
- Ability to do whatever I want in a simulator
- Freeform mode for educational purposes
- Offline mode for educational purposes


### Screw Guru

[App page](https://appshunter.io/ios/app/screw-guru/id6737529244)

Engage your mind with physics-based puzzles and addictive gameplay. Solve over 1000 brain-teasing levels using intuitive drag and rotate controls. Enjoy stunning 3D graphics, a relaxing soundtrack, and unlockable customizations.

**Highlights:** Over 1000 levels, Intuitive drag and rotate controls, Stunning 3D graphics, Relaxing soundtrack, Unlockable customizations, Offline play

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

**In-app purchases (33)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sale_1 | $0.99 | one-time |
| BEGINNER PACK | $1.99 | one-time |
| One Time Offer | $1.99 | one-time |
| Skip-it_1 | $2.49 | one-time |
| Sale_5 | $4.99 | one-time |
| Starer Pack | $4.99 | one-time |
| Beginner Pack | $4.99 | one-time |
| Coins_1 | $4.99 | one-time |
| Sale_6 | $5.99 | one-time |
| Revive Pack | $5.99 | one-time |
| Skip-it_2 | $5.99 | one-time |
| ChaseLargePack2 | $5.99 | one-time |
| Skip lts Piggy - Basic | $6.99 | one-time |
| Sale_8 | $7.99 | one-time |
| Explorer Pack | $7.99 | one-time |
| Women's Day Pack | $7.99 | one-time |
| Valentine's Deal Pack | $7.99 | one-time |
| No Ads | $7.99 | one-time |
| All Round Package | $9.99 | one-time |
| EASTER DEAL | $9.99 | one-time |
| Skip lts Piggy - 2X Reward | $9.99 | one-time |
| Sale_13 | $12.99 | one-time |
| No Ads Pack | $12.99 | one-time |
| Sale_15 | $14.99 | one-time |
| Pro Pack | $14.99 | one-time |
| Skip-it_3 | $16.99 | one-time |
| BOXES PACKAGE | $17.99 | one-time |
| Helper Package | $19.99 | one-time |
| Skip-it_4 | $29.99 | one-time |
| Revive Package | $39.99 | one-time |
| Revive+ Package | $49.99 | one-time |
| Skip-it_5 | $59.99 | one-time |
| Skip-it_6 | $99.99 | one-time |

**What reviewers like**

- 🎨 Colorful, clean layouts
- 🎶 Catchy little tune
- 👍 Fun and relaxing to play
- 🧠 Helps with learning colors

**What reviewers complain about**

- 📺 Excessive, unskippable ads
- 🤖 Levels rigged to require ads
- 💰 Purchases not working as expected
- 🐛 Glitches and bugs
- 🔁 Repetitive levels

**Reported bugs**

- Certain levels impossible to complete
- Ads freezing the app
- Missing rewards and progress not saving
- Compatibility issues with older devices

**Requested features**

- Add more levels and pin designs
- Improve save/progress system
- Allow skipping ads for paid users
- Provide a way to report issues


## Frequently asked questions

### Is Circuit Design 3D Simulator free?

Circuit Design 3D Simulator is free to download, with in-app purchases available.

### Is Screw Guru free?

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

### Which has better reviews, Circuit Design 3D Simulator or Screw Guru?

Screw Guru is rated higher. Circuit Design 3D Simulator averages 3.9 out of 5 from 205 ratings, while Screw Guru averages 4.3 from 6.4K ratings.

### Do Circuit Design 3D Simulator or Screw Guru have ads?

Both Circuit Design 3D Simulator and Screw Guru show ads.

### Which is updated more often, Circuit Design 3D Simulator or Screw Guru?

Circuit Design 3D Simulator ships an update every 4 months, and Screw Guru every 3 weeks. Most recently, Circuit Design 3D Simulator was updated on October 30, 2026 and Screw Guru on November 1, 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.*