# Vernier Caliper Simulator 2 vs Circuit Simulator

The clearest difference is rating: Circuit Simulator at 4.7 against Vernier Caliper Simulator 2's 2.5. Circuit Simulator also leads on review sentiment (77% vs 50%) and update cadence (every 2 months vs every 10 months). Vernier Caliper Simulator 2's advantage is in-app purchases (none vs 8) and iOS requirement (10.2 vs 15.3). On price, ads and device support there is nothing between them.

Both are free to download. Circuit Simulator sells 8 in-app purchases, starting at $0.99 per month. Vernier Caliper Simulator 2 asks for nothing beyond the download.

Circuit Simulator holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Circuit Simulator has 95 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 50% of Vernier Caliper Simulator 2's written reviews are positive against 77% of Circuit Simulator's.

Vernier Caliper Simulator 2 ships an update every 10 months, Circuit Simulator every 2 months. The most recent releases landed on November 2, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Vernier Caliper Simulator 2 | Circuit Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.5 (2 ratings)](https://appshunter.io/ios/app/vernier-caliper-simulator-2/id1202620072/reviews) | **[4.7 (95 ratings)](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364/reviews)** |
| Number of ratings | 2 | **95** |
| Positive reviews | 50.0% of reviews | **76.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 2 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 18 MB | 105 MB |
| Requires iOS | **10.2** | 15.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jiun Wei Chia](https://appshunter.io/developer/560872418) | [Sindhu Gopi](https://appshunter.io/developer/1773585161) |

## What reviewers say

### Vernier Caliper Simulator 2

[App page](https://appshunter.io/ios/app/vernier-caliper-simulator-2/id1202620072)

Practice reading a vernier caliper with this free and easy application. Slide your finger to grip objects, enter your measurement guess, and check your accuracy. This version includes leaderboards and a higher precision scale option.

**Highlights:** Vernier caliper simulation, Interactive object gripping, Answer checking, Leaderboards, 0.005 cm precision scale option

**Features:** macOS Compatibility

**In-app purchases:** none


### Circuit Simulator

[App page](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364)

Design and simulate electronic and digital circuits in real-time. Visualize voltage and current flow, and analyze signals with oscilloscopes and multimeters. Offers a user-friendly experience for circuit design and digital electronic analysis.

**Highlights:** Real-time circuit simulation, Voltage and current analysis, Multichannel oscilloscope, Digital circuit simulation, User-friendly interface, Circuit design tools

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extensions Subscription | $0.99 | per month |
| Sensors Extension | $0.99 | one-time |
| Custom Chips Extension | $1.99 | one-time |
| Instruments extension | $2.99 | one-time |
| Analog Extension | $3.99 | one-time |
| Misc Extension | $3.99 | one-time |
| Digital Extension | $3.99 | one-time |
| Extension Pack | $12.99 | one-time |


## Frequently asked questions

### Is Vernier Caliper Simulator 2 free?

Vernier Caliper Simulator 2 is free to download, with no in-app purchases.

### Is Circuit Simulator free?

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

### Which has better reviews, Vernier Caliper Simulator 2 or Circuit Simulator?

Circuit Simulator is rated higher. Vernier Caliper Simulator 2 averages 2.5 out of 5 from 2 ratings, while Circuit Simulator averages 4.7 from 95 ratings.

### Do Vernier Caliper Simulator 2 or Circuit Simulator have ads?

Neither Vernier Caliper Simulator 2 nor Circuit Simulator shows ads.

### Which is updated more often, Vernier Caliper Simulator 2 or Circuit Simulator?

Vernier Caliper Simulator 2 ships an update every 10 months, and Circuit Simulator every 2 months. Most recently, Vernier Caliper Simulator 2 was updated on November 2, 2026 and Circuit Simulator on November 12, 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.*